Update web-platform-tests to revision b'3ee7ccc2abbbc8d8f6efbb45f80bffdb3c0c76ba'

630 files changed, 8273 insertions, 4955 deletions

diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 45ef9dee917..c4006a71035 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
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+      [
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+     "xhr.https.window.js": [
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+      [
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+       {
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+          "/common/subset-tests-by-key.js"
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+         ],
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+          "/common/subset-tests-by-key.js"
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+          "/common/utils.js"
+         ],
+         [
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+       {
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+         [
+          "script",
+          "/common/subset-tests-by-key.js"
+         ],
+         [
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+         ],
+         [
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+         ],
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+      [
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+     ]
+    },
     "metadata": {
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@@ -559129,751 +560141,6 @@
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@@ -561755,7 +562022,7 @@
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       {}
@@ -564871,6 +565138,141 @@
         ]
        }
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+      [
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+          "long"
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+      "463746e8f7977017066e4f9525b7c7a55a04a600",
       [
        null,
        {}
@@ -627843,6 +628334,13 @@
         {}
        ]
       ],
+      "traverseTo-detach-cross-document-before-navigate-event.html": [
+       "ed319f6223936830c15d36a08e9c782f59bffc1b",
+       [
+        null,
+        {}
+       ]
+      ],
       "traverseTo-detach-cross-document.html": [
        "8784313b70546e49d37e227ec9c0f809990b77d5",
        [
@@ -627850,6 +628348,13 @@
         {}
        ]
       ],
+      "traverseTo-detach-same-document-before-navigate-event.html": [
+       "592ac6f19906979ff19b7ae85f7ad9006e8a5f22",
+       [
+        null,
+        {}
+       ]
+      ],
       "traverseTo-detach-same-document.html": [
        "b0308b8df8fe4c3ed975fe16b790c29a0de1891c",
        [
@@ -627894,14 +628399,14 @@
       ]
      },
      "sandboxing-back-parent.html": [
-      "bc3d4e2e9fb7e3906e027109fe18d275e5db744e",
+      "6eee3f917cdc5bfae0491685172da2fff918cdb3",
       [
        null,
        {}
       ]
      ],
      "sandboxing-back-sibling.html": [
-      "718ea6d3ddada0bc73ea965a2969f5fe79642a9c",
+      "97c03ea0c2fbd84cc1cc8d829bfd352d31981544",
       [
        null,
        {}
@@ -633137,6 +633642,22 @@
      ]
     ]
    },
+   "png": {
+    "cicp-chunk.html": [
+     "4afc262dcf5ead61423a5bea21ae6e6f998a401c",
+     [
+      null,
+      {}
+     ]
+    ],
+    "trns-chunk.html": [
+     "652cda0e32089b7ade4e41c0f69a9637177bd9dd",
+     [
+      null,
+      {}
+     ]
+    ]
+   },
    "pointerevents": {
     "capturing_boundary_event_handler_at_ua_shadowdom.html": [
      "7500277f2251fa300f9af99d52e1f73a943f237c",
@@ -633229,6 +633750,15 @@
        }
       ]
      ],
+     "pointerevent_mouse-pointer-preventdefault-passive.html": [
+      "57da09686602f96da63cf8bb0b740f0862732c91",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
      "pointerevent_mouse-pointer-preventdefault.html": [
       "549cbf55d8818291f412a1627765df9611ce614c",
       [
@@ -651359,7 +651889,7 @@
       ]
      ],
      "animation-shorthand.html": [
-      "60d6c7664672b61a40f4b20e0fa89765d2bf67f4",
+      "87e66d0f532bf85de5e19e90235e8fc71e7cb11a",
       [
        null,
        {}
@@ -651394,7 +651924,7 @@
       ]
      ],
      "animation-timeline-named-scroll-progress-timeline.tentative.html": [
-      "9f55e2d2c91ff0045ab452cd5e30a3e54d34fe2a",
+      "30461723386a2e5c0440856664ff49b2cfd380e6",
       [
        null,
        {}
@@ -656202,6 +656732,13 @@
        {}
       ]
      ],
+     "import-scripts-data-url.https.html": [
+      "f0922193dd0112b72881d05a97aafc67c5bdc3d5",
+      [
+       null,
+       {}
+      ]
+     ],
      "import-scripts-mime-types.https.html": [
       "1679831d0f2b98aee22898d820373e80079fbe00",
       [
@@ -661512,7 +662049,7 @@
      ]
     ],
     "requestStorageAccess-cross-origin-iframe-navigation.sub.https.window.js": [
-     "67906708aed7676accb91efe2e2cad926c0d4706",
+     "24595ed340856e0f667dbd2671614e5c23ba712c",
      [
       "storage-access-api/requestStorageAccess-cross-origin-iframe-navigation.sub.https.window.html",
       {
@@ -661769,7 +662306,7 @@
      ]
     ],
     "storage-access-permission.sub.https.window.js": [
-     "4222051c10bdc1c2ad060d7da1abec0ba6ea2f25",
+     "82794061bd013ced4d8a42f3337fddd6a53d6d0a",
      [
       "storage-access-api/storage-access-permission.sub.https.window.html",
       {
@@ -669278,7 +669815,7 @@
       ]
      ],
      "requestStorageAccessForOrigin.sub.https.window.js": [
-      "76e5bf83b1eed2fb19f6c2ae5547b422dea6d764",
+      "6fff9e9189e495af43ef0a4c9a087cbc05c7d14c",
       [
        "top-level-storage-access-api/tentative/requestStorageAccessForOrigin.sub.https.window.html",
        {
@@ -682793,7 +683330,7 @@
      ]
     ],
     "getcredential-prf.https.html": [
-     "61b52ac5958c7b242168285ad5e83581b4c1497e",
+     "40dfc5cad33921e3f5c00865a74cf79e5f81e26e",
      [
       null,
       {
@@ -689328,7 +689865,7 @@
      ]
     ],
     "RTCPeerConnection-getStats.https.html": [
-     "8062618dd6170f81dbeb5af4a43bbcc204d96e95",
+     "96e763985c059679b1e97b9cfab4399632c9b00b",
      [
       null,
       {
@@ -689713,7 +690250,7 @@
      ]
     ],
     "RTCRtpReceiver-getStats.https.html": [
-     "06d0f0b39bf57814114bd35c68156b89752e0c64",
+     "b8daf12fc275fb68ef47e1556a9ecd194f5b9e90",
      [
       null,
       {
@@ -689747,7 +690284,7 @@
      ]
     ],
     "RTCRtpSender-getStats.https.html": [
-     "27ac3e952f11d37ad50581465e6d8e8454982677",
+     "62c01aafa6a959f25bfd072a512ddc4b66ed1878",
      [
       null,
       {
@@ -690569,7 +691106,7 @@
      ]
     ],
     "RTCRtpTransceiver-headerExtensionControl.html": [
-     "770aa49f052f5d5f84185ca6420c674a6dadb765",
+     "b6dc7da5d4076d113419888e814e445e9dd2c40a",
      [
       null,
       {}
@@ -706793,10 +707330,12 @@
      ]
     ],
     "Worker_script_mimetype.htm": [
-     "4768fe70bcb0bde98c1d0bd3801362e2bcdf3150",
+     "d2278d3717c2f0c57673c220da49a07d8251d0d5",
      [
       null,
-      {}
+      {
+       "timeout": "long"
+      }
      ]
     ],
     "Worker_terminate_event_queue.htm": [
@@ -730348,13 +730887,6 @@
        {}
       ]
      ],
-     "background-clip-padding-box-with-border-radius.html": [
-      "ee98dababbcce0d7fbee2f6b7eaff18bb78341e9",
-      [
-       null,
-       {}
-      ]
-     ],
      "background-clip-root.html": [
       "8f9f5f3ebd50137939e6f006e7cb068aa120863c",
       [
@@ -734769,6 +735301,31 @@
           {}
          ]
         ]
+       },
+       "print": {
+        "context.py": [
+         "a73bfee96215621a67456a501f5b7f420cda82ce",
+         [
+          null,
+          {}
+         ]
+        ],
+        "invalid.py": [
+         "114aeb62dcc27474a0869c0964b8dca2e95c8053",
+         [
+          null,
+          {}
+         ]
+        ],
+        "page_ranges.py": [
+         "9e466883b0a6e4381b227b3c8115fd3a6e93879e",
+         [
+          null,
+          {
+           "timeout": "long"
+          }
+         ]
+        ]
        }
       },
       "errors": {
@@ -734890,7 +735447,7 @@
        },
        "call_function": {
         "arguments.py": [
-         "9fbe5fb81101054f9cafe1411a6c9a5937473324",
+         "daf31fc869c3dab31218b508cf4b24b6a084f78a",
          [
           null,
           {}
@@ -734925,7 +735482,7 @@
          ]
         ],
         "invalid.py": [
-         "cf5a07f41b78b00d688e8c3f8b29259856fa79bb",
+         "d73705c672470e1fe1986b61808b29eae4aea4d6",
          [
           null,
           {}
@@ -734953,7 +735510,7 @@
          ]
         ],
         "result_node.py": [
-         "08e47be5f714de3a53d39c0dfec45a4d6827fb5a",
+         "e1575374fd594c24e395a4e5c2f2fdfb6c53b563",
          [
           null,
           {}
@@ -734967,7 +735524,7 @@
          ]
         ],
         "sandbox.py": [
-         "e0a4914d8f6024db9966d6f54e215a237f099285",
+         "382ede3c7839afcaa625aa56ef2b9d728f7730a3",
          [
           null,
           {}
@@ -734988,6 +735545,15 @@
          ]
         ]
        },
+       "classic_interop": {
+        "node_shared_id.py": [
+         "410d029207c6674c2263a58f875c10d3c7784fdd",
+         [
+          null,
+          {}
+         ]
+        ]
+       },
        "disown": {
         "handles.py": [
          "d4a514576624cd9fce98cf244b00ca39008ba0ee",
@@ -735069,7 +735635,7 @@
          ]
         ],
         "result_node.py": [
-         "0d0589a5f3816e4aa64aa275360bee0ee76c5958",
+         "63915a8f4a4781330583b29fbd62f020a9801c2e",
          [
           null,
           {}
@@ -735083,7 +735649,7 @@
          ]
         ],
         "sandbox.py": [
-         "ba4eb732d16f2bb533af67b1ef15d347b6b6734d",
+         "3a6771780d5f69af4054cd7fdcac35e8f6139aee",
          [
           null,
           {}
@@ -735299,7 +735865,7 @@
      },
      "element_clear": {
       "clear.py": [
-       "fa96ed3a58aa0ae81216926e153381ecfe3f2ae8",
+       "9b0d7f2133f7686603449897c659c7e4220ec746",
        [
         null,
         {
@@ -735333,7 +735899,7 @@
        ]
       ],
       "click.py": [
-       "79be957d1b214527b363d9b35d46af67c7d3f9de",
+       "3c3f7d70e6c6b23932e7452f73e160a2d213a5ba",
        [
         null,
         {}
@@ -735442,7 +736008,7 @@
        ]
       ],
       "send_keys.py": [
-       "854d2af42ccc8f42735a3e7b6df7217fdb8770b3",
+       "281c7ad719ddd05dac2ab7c6de343e9bebde4a5b",
        [
         null,
         {}
@@ -735460,7 +736026,7 @@
      },
      "execute_async_script": {
       "arguments.py": [
-       "55fd9527aea390c7a1a9ae7556022ab854cfc6f9",
+       "ead6e0c186ea40771643aea56ccc7180e6cc28d7",
        [
         null,
         {}
@@ -735527,7 +736093,7 @@
      },
      "execute_script": {
       "arguments.py": [
-       "53c49aaa6897dc4f60da317480161c1516a7ec18",
+       "b8657ce0efae2a266158bb8c2846864cd63c1d5e",
        [
         null,
         {}
@@ -735781,7 +736347,7 @@
      },
      "get_computed_label": {
       "get.py": [
-       "8124fee0c9dec85f9478b6702b25b4fdece96a8e",
+       "0dc00a471a9a37509e4ed7a448c1213bb978eeda",
        [
         null,
         {}
@@ -735790,7 +736356,7 @@
      },
      "get_computed_role": {
       "get.py": [
-       "dcfe753f0dcaf65d6cbd77a074a0039ad0564cde",
+       "8d15e8fb90ddda39c13836134d179ca7cb5cc7fe",
        [
         null,
         {}
@@ -735831,7 +736397,7 @@
      },
      "get_element_attribute": {
       "get.py": [
-       "e23d7e4d5abbf2ce430e16816e7d49b740e931fb",
+       "375f25032c06a10fecf78a884647056fbd826b9d",
        [
         null,
         {}
@@ -735849,7 +736415,7 @@
      },
      "get_element_css_value": {
       "get.py": [
-       "f9797c2cff51b06818c9d2f9f46efdf321e50504",
+       "6f0a8a56395788be0f9152028f569f133fcd79ed",
        [
         null,
         {}
@@ -735867,7 +736433,7 @@
      },
      "get_element_property": {
       "get.py": [
-       "072375804e814cfe2dc0d13e89f3389ec52b674d",
+       "84e4e89628146e3984ba926a2a9a88fb27fa9f4e",
        [
         null,
         {}
@@ -735885,7 +736451,7 @@
      },
      "get_element_rect": {
       "get.py": [
-       "7f87b44e7e932b9e5215bb277af12a6be779fc3c",
+       "942f119f43c9bb30eaefd52f3c793d7e47cfbfc4",
        [
         null,
         {}
@@ -735903,7 +736469,7 @@
      },
      "get_element_shadow_root": {
       "get.py": [
-       "61d0d008100495a308189e2494184b4490cc6e39",
+       "d9adde0b9e3aee402aa2e03db9d02259d968e81b",
        [
         null,
         {}
@@ -735921,7 +736487,7 @@
      },
      "get_element_tag_name": {
       "get.py": [
-       "1bf19309e45888edcbf4483daa4970d81a70dad0",
+       "3bb03d79886d88c6ba045d9f0bedae7414412025",
        [
         null,
         {}
@@ -735939,7 +736505,7 @@
      },
      "get_element_text": {
       "get.py": [
-       "aa36c487c809e101029689ef4aa1a1b8f25ec8d0",
+       "e8d559cf661acee18a39cbc4b6bb03289385ca08",
        [
         null,
         {}
@@ -736090,7 +736656,7 @@
      },
      "is_element_enabled": {
       "enabled.py": [
-       "34e5cce4197cb2f3d33a34e819119f4581ea3b55",
+       "fccff383a55a7929179810216407acbdea0a079c",
        [
         null,
         {}
@@ -736108,7 +736674,7 @@
      },
      "is_element_selected": {
       "selected.py": [
-       "b119705e7dd16fc87f41d17fc6b77c159a5a5a65",
+       "1fb5b9ce86b521069f638956272e3101ea62cc5c",
        [
         null,
         {}
@@ -736477,7 +737043,7 @@
      },
      "print": {
       "printcmd.py": [
-       "169e2249a99449d99e44eed55f8565836e139468",
+       "415786675c5936bb55cf4c6c4b49980407aa0547",
        [
         null,
         {
@@ -736651,7 +737217,7 @@
        ]
       ],
       "screenshot.py": [
-       "deea9514ed48f107196447dbe8f1f660720ba48d",
+       "ea4cc290db4cdd603d9dc20bbc90914c4e241cb5",
        [
         null,
         {}
diff --git a/tests/wpt/metadata/WebCryptoAPI/encrypt_decrypt/aes_gcm_256_iv.https.any.js.ini b/tests/wpt/metadata/WebCryptoAPI/encrypt_decrypt/aes_gcm_256_iv.https.any.js.ini
new file mode 100644
index 00000000000..751ae3bdb5b
--- /dev/null
+++ b/tests/wpt/metadata/WebCryptoAPI/encrypt_decrypt/aes_gcm_256_iv.https.any.js.ini
@@ -0,0 +1,5 @@
+[aes_gcm_256_iv.https.any.worker.html]
+  expected: ERROR
+
+[aes_gcm_256_iv.https.any.html]
+  expected: ERROR
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-001.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-001.html.ini
deleted file mode 100644
index 0842d0b5727..00000000000
--- a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-001.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[hit-test-floats-001.html]
-  [hit-test-floats-001]
-    expected: FAIL
diff --git a/tests/wpt/metadata/css/CSS2/linebox/inline-negative-margin-001.html.ini b/tests/wpt/metadata/css/CSS2/linebox/inline-negative-margin-001.html.ini
index a057f038339..5e3a96e5999 100644
--- a/tests/wpt/metadata/css/CSS2/linebox/inline-negative-margin-001.html.ini
+++ b/tests/wpt/metadata/css/CSS2/linebox/inline-negative-margin-001.html.ini
@@ -8,8 +8,5 @@
   [[data-expected-height\] 3]
     expected: FAIL
 
-  [[data-expected-height\] 1]
-    expected: FAIL
-
-  [[data-expected-height\] 2]
+  [[data-expected-height\] 4]
     expected: FAIL
diff --git a/tests/wpt/metadata/css/CSS2/normal-flow/block-in-inline-hittest-float-002.html.ini b/tests/wpt/metadata/css/CSS2/normal-flow/block-in-inline-hittest-float-002.html.ini
deleted file mode 100644
index 3e5096beef3..00000000000
--- a/tests/wpt/metadata/css/CSS2/normal-flow/block-in-inline-hittest-float-002.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[block-in-inline-hittest-float-002.html]
-  [block-in-inline-hittest-float-002]
-    expected: FAIL
diff --git a/tests/wpt/metadata/css/css-text/line-breaking/segment-break-transformation-unremovable-2.html.ini b/tests/wpt/metadata/css/css-text/line-breaking/segment-break-transformation-unremovable-2.html.ini
deleted file mode 100644
index 2a64df11b9a..00000000000
--- a/tests/wpt/metadata/css/css-text/line-breaking/segment-break-transformation-unremovable-2.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[segment-break-transformation-unremovable-2.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-text/white-space/trailing-other-space-separators-break-spaces-005.html.ini b/tests/wpt/metadata/css/css-text/white-space/trailing-other-space-separators-break-spaces-005.html.ini
new file mode 100644
index 00000000000..b9463b3ee1e
--- /dev/null
+++ b/tests/wpt/metadata/css/css-text/white-space/trailing-other-space-separators-break-spaces-005.html.ini
@@ -0,0 +1,2 @@
+[trailing-other-space-separators-break-spaces-005.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-text/white-space/trailing-other-space-separators-break-spaces-012.html.ini b/tests/wpt/metadata/css/css-text/white-space/trailing-other-space-separators-break-spaces-012.html.ini
new file mode 100644
index 00000000000..c4ec0fbcc2f
--- /dev/null
+++ b/tests/wpt/metadata/css/css-text/white-space/trailing-other-space-separators-break-spaces-012.html.ini
@@ -0,0 +1,2 @@
+[trailing-other-space-separators-break-spaces-012.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-transitions/dynamic-root-element.html.ini b/tests/wpt/metadata/css/css-transitions/dynamic-root-element.html.ini
new file mode 100644
index 00000000000..f55fcd9f3a4
--- /dev/null
+++ b/tests/wpt/metadata/css/css-transitions/dynamic-root-element.html.ini
@@ -0,0 +1,2 @@
+[dynamic-root-element.html]
+  expected: CRASH
diff --git a/tests/wpt/metadata/css/css-transitions/properties-value-inherit-002.html.ini b/tests/wpt/metadata/css/css-transitions/properties-value-inherit-002.html.ini
index cfd069eec6c..442caf6e43f 100644
--- a/tests/wpt/metadata/css/css-transitions/properties-value-inherit-002.html.ini
+++ b/tests/wpt/metadata/css/css-transitions/properties-value-inherit-002.html.ini
@@ -326,3 +326,303 @@
 
   [margin-right length(mm) / values]
     expected: [FAIL, PASS]
+
+  [margin-right length(cm) / values]
+    expected: FAIL
+
+  [margin-right length(in) / values]
+    expected: FAIL
+
+  [margin-top length(pt) / values]
+    expected: FAIL
+
+  [margin-top length(pc) / values]
+    expected: FAIL
+
+  [margin-top length(px) / values]
+    expected: FAIL
+
+  [margin-top length(em) / values]
+    expected: FAIL
+
+  [margin-top length(ex) / values]
+    expected: FAIL
+
+  [margin-top length(mm) / values]
+    expected: FAIL
+
+  [margin-top length(cm) / values]
+    expected: FAIL
+
+  [margin-top length(in) / values]
+    expected: FAIL
+
+  [height length(pt) / values]
+    expected: FAIL
+
+  [height length(pc) / values]
+    expected: FAIL
+
+  [height length(px) / values]
+    expected: FAIL
+
+  [height length(em) / values]
+    expected: FAIL
+
+  [height length(ex) / values]
+    expected: FAIL
+
+  [height length(mm) / values]
+    expected: FAIL
+
+  [height length(cm) / values]
+    expected: FAIL
+
+  [height length(in) / values]
+    expected: FAIL
+
+  [height percentage(%) / values]
+    expected: FAIL
+
+  [width length(pt) / values]
+    expected: FAIL
+
+  [width length(pc) / values]
+    expected: FAIL
+
+  [width length(px) / values]
+    expected: FAIL
+
+  [width length(em) / values]
+    expected: FAIL
+
+  [width length(ex) / values]
+    expected: FAIL
+
+  [width length(mm) / values]
+    expected: FAIL
+
+  [width length(cm) / values]
+    expected: FAIL
+
+  [width length(in) / values]
+    expected: FAIL
+
+  [width percentage(%) / values]
+    expected: FAIL
+
+  [min-height length(pt) / values]
+    expected: FAIL
+
+  [min-height length(pc) / values]
+    expected: FAIL
+
+  [min-height length(px) / values]
+    expected: FAIL
+
+  [min-height length(em) / values]
+    expected: FAIL
+
+  [min-height length(ex) / values]
+    expected: FAIL
+
+  [min-height length(mm) / values]
+    expected: FAIL
+
+  [min-height length(cm) / values]
+    expected: FAIL
+
+  [min-height length(in) / values]
+    expected: FAIL
+
+  [min-height percentage(%) / values]
+    expected: FAIL
+
+  [min-width length(pt) / values]
+    expected: FAIL
+
+  [min-width length(pc) / values]
+    expected: FAIL
+
+  [min-width length(px) / values]
+    expected: FAIL
+
+  [min-width length(em) / values]
+    expected: FAIL
+
+  [min-width length(ex) / values]
+    expected: FAIL
+
+  [min-width length(mm) / values]
+    expected: FAIL
+
+  [min-width length(cm) / values]
+    expected: FAIL
+
+  [min-width length(in) / values]
+    expected: FAIL
+
+  [min-width percentage(%) / values]
+    expected: FAIL
+
+  [max-height length(pt) / values]
+    expected: FAIL
+
+  [max-height length(pc) / values]
+    expected: FAIL
+
+  [max-height length(px) / values]
+    expected: FAIL
+
+  [max-height length(em) / values]
+    expected: FAIL
+
+  [color color(rgba) / values]
+    expected: FAIL
+
+  [font-size length(pt) / values]
+    expected: FAIL
+
+  [font-size length(pc) / values]
+    expected: FAIL
+
+  [font-size length(px) / values]
+    expected: FAIL
+
+  [font-size length(em) / values]
+    expected: FAIL
+
+  [font-size length(ex) / values]
+    expected: FAIL
+
+  [font-size length(mm) / values]
+    expected: FAIL
+
+  [font-size length(cm) / values]
+    expected: FAIL
+
+  [font-size length(in) / values]
+    expected: FAIL
+
+  [font-size percentage(%) / values]
+    expected: FAIL
+
+  [font-weight font-weight(keyword) / values]
+    expected: FAIL
+
+  [font-weight font-weight(numeric) / values]
+    expected: FAIL
+
+  [line-height number(integer) / values]
+    expected: FAIL
+
+  [line-height number(decimal) / values]
+    expected: FAIL
+
+  [line-height length(pt) / values]
+    expected: FAIL
+
+  [line-height length(pc) / values]
+    expected: FAIL
+
+  [line-height length(px) / values]
+    expected: FAIL
+
+  [line-height length(em) / values]
+    expected: FAIL
+
+  [line-height length(ex) / values]
+    expected: FAIL
+
+  [line-height length(mm) / values]
+    expected: FAIL
+
+  [line-height length(cm) / values]
+    expected: FAIL
+
+  [line-height length(in) / values]
+    expected: FAIL
+
+  [line-height percentage(%) / values]
+    expected: FAIL
+
+  [letter-spacing length(pt) / values]
+    expected: FAIL
+
+  [letter-spacing length(pc) / values]
+    expected: FAIL
+
+  [letter-spacing length(px) / values]
+    expected: FAIL
+
+  [letter-spacing length(em) / values]
+    expected: FAIL
+
+  [letter-spacing length(ex) / values]
+    expected: FAIL
+
+  [letter-spacing length(mm) / values]
+    expected: FAIL
+
+  [letter-spacing length(cm) / values]
+    expected: FAIL
+
+  [letter-spacing length(in) / values]
+    expected: FAIL
+
+  [word-spacing length(pt) / values]
+    expected: FAIL
+
+  [word-spacing length(pc) / values]
+    expected: FAIL
+
+  [word-spacing length(px) / values]
+    expected: FAIL
+
+  [word-spacing length(em) / values]
+    expected: FAIL
+
+  [word-spacing length(ex) / values]
+    expected: FAIL
+
+  [word-spacing length(mm) / values]
+    expected: FAIL
+
+  [word-spacing length(cm) / values]
+    expected: FAIL
+
+  [word-spacing length(in) / values]
+    expected: FAIL
+
+  [word-spacing percentage(%) / values]
+    expected: FAIL
+
+  [text-indent length(pt) / values]
+    expected: FAIL
+
+  [text-indent length(pc) / values]
+    expected: FAIL
+
+  [text-indent length(px) / values]
+    expected: FAIL
+
+  [text-indent length(em) / values]
+    expected: FAIL
+
+  [text-indent length(ex) / values]
+    expected: FAIL
+
+  [text-indent length(mm) / values]
+    expected: FAIL
+
+  [text-indent length(cm) / values]
+    expected: FAIL
+
+  [text-indent length(in) / values]
+    expected: FAIL
+
+  [text-indent percentage(%) / values]
+    expected: FAIL
+
+  [text-shadow shadow(shadow) / values]
+    expected: FAIL
diff --git a/tests/wpt/metadata/css/css-values/calc-infinity-nan-serialize-time.html.ini b/tests/wpt/metadata/css/css-values/calc-infinity-nan-serialize-time.html.ini
index 6af7d919ad8..b24f2c792bb 100644
--- a/tests/wpt/metadata/css/css-values/calc-infinity-nan-serialize-time.html.ini
+++ b/tests/wpt/metadata/css/css-values/calc-infinity-nan-serialize-time.html.ini
@@ -82,3 +82,6 @@
 
   ['calc(1s * clamp(-inFinity, infinity, 10))' as a specified value should serialize as 'calc(10s)'.]
     expected: FAIL
+
+  ['calc(1ms * NaN)' as a specified value should serialize as 'calc(NaN * 1s)'.]
+    expected: FAIL
diff --git a/tests/wpt/metadata/css/cssom-view/CaretPosition-001.html.ini b/tests/wpt/metadata/css/cssom-view/CaretPosition-001.html.ini
new file mode 100644
index 00000000000..f18b8d2fcf9
--- /dev/null
+++ b/tests/wpt/metadata/css/cssom-view/CaretPosition-001.html.ini
@@ -0,0 +1,3 @@
+[CaretPosition-001.html]
+  [Element at (400, 100)]
+    expected: FAIL
diff --git a/tests/wpt/metadata/css/cssom-view/elementFromPoint-ellipsis-in-inline-box.html.ini b/tests/wpt/metadata/css/cssom-view/elementFromPoint-ellipsis-in-inline-box.html.ini
new file mode 100644
index 00000000000..b905fe70fcb
--- /dev/null
+++ b/tests/wpt/metadata/css/cssom-view/elementFromPoint-ellipsis-in-inline-box.html.ini
@@ -0,0 +1,3 @@
+[elementFromPoint-ellipsis-in-inline-box.html]
+  [elementFromPoint-ellipsis-in-inline-box]
+    expected: FAIL
diff --git a/tests/wpt/metadata/css/cssom-view/elementFromPoint-list-001.html.ini b/tests/wpt/metadata/css/cssom-view/elementFromPoint-list-001.html.ini
index 8ae9bae3500..390e170437a 100644
--- a/tests/wpt/metadata/css/cssom-view/elementFromPoint-list-001.html.ini
+++ b/tests/wpt/metadata/css/cssom-view/elementFromPoint-list-001.html.ini
@@ -13,3 +13,15 @@
 
   [<li>Outside 3</li>]
     expected: FAIL
+
+  [<li>Inside 2</li>]
+    expected: FAIL
+
+  [<li>Inside 3</li>]
+    expected: FAIL
+
+  [<li>Image Inside 1</li>]
+    expected: FAIL
+
+  [<li>Image Inside 2</li>]
+    expected: FAIL
diff --git a/tests/wpt/metadata/css/cssom-view/elementFromPoint-subpixel.html.ini b/tests/wpt/metadata/css/cssom-view/elementFromPoint-subpixel.html.ini
deleted file mode 100644
index 8f6f663ba61..00000000000
--- a/tests/wpt/metadata/css/cssom-view/elementFromPoint-subpixel.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[elementFromPoint-subpixel.html]
-  [Hit test top left corner of box]
-    expected: FAIL
diff --git a/tests/wpt/metadata/css/cssom-view/elementFromPoint-visibility-hidden-resizer.html.ini b/tests/wpt/metadata/css/cssom-view/elementFromPoint-visibility-hidden-resizer.html.ini
new file mode 100644
index 00000000000..a6bca7ac372
--- /dev/null
+++ b/tests/wpt/metadata/css/cssom-view/elementFromPoint-visibility-hidden-resizer.html.ini
@@ -0,0 +1,3 @@
+[elementFromPoint-visibility-hidden-resizer.html]
+  [elementFromPoint on resizer area of an element with visibility:hidden]
+    expected: FAIL
diff --git a/tests/wpt/metadata/css/cssom-view/elementFromPosition.html.ini b/tests/wpt/metadata/css/cssom-view/elementFromPosition.html.ini
index ceb43099040..898f39c4330 100644
--- a/tests/wpt/metadata/css/cssom-view/elementFromPosition.html.ini
+++ b/tests/wpt/metadata/css/cssom-view/elementFromPosition.html.ini
@@ -17,3 +17,6 @@
 
   [test some point of the element: bottom right corner]
     expected: FAIL
+
+  [test the top of layer]
+    expected: FAIL
diff --git a/tests/wpt/metadata/css/cssom-view/elementsFromPoint-invalid-cases.html.ini b/tests/wpt/metadata/css/cssom-view/elementsFromPoint-invalid-cases.html.ini
deleted file mode 100644
index a3496a40d07..00000000000
--- a/tests/wpt/metadata/css/cssom-view/elementsFromPoint-invalid-cases.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[elementsFromPoint-invalid-cases.html]
-  [The root element is the last element returned for otherwise empty queries within the viewport]
-    expected: FAIL
diff --git a/tests/wpt/metadata/custom-elements/reactions/HTMLElement.html.ini b/tests/wpt/metadata/custom-elements/reactions/HTMLElement.html.ini
index 0edb8845eed..6b36b7c0d59 100644
--- a/tests/wpt/metadata/custom-elements/reactions/HTMLElement.html.ini
+++ b/tests/wpt/metadata/custom-elements/reactions/HTMLElement.html.ini
@@ -41,3 +41,9 @@
 
   [outerText on HTMLElement must enqueue a disconnected reaction]
     expected: FAIL
+
+  [popover on HTMLElement must enqueue an attributeChanged reaction when adding popover content attribute]
+    expected: FAIL
+
+  [popover on HTMLElement must enqueue an attributeChanged reaction when replacing an existing attribute]
+    expected: FAIL
diff --git a/tests/wpt/metadata/fetch/private-network-access/fetch-from-treat-as-public.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/fetch-from-treat-as-public.https.window.js.ini
index 6a6b5a69797..6a6b5a69797 100644
--- a/tests/wpt/metadata/fetch/private-network-access/fetch-from-treat-as-public.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/fetch-from-treat-as-public.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/fetch.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/fetch.https.window.js.ini
index b900b72b643..4d6c6cb1bb0 100644
--- a/tests/wpt/metadata/fetch/private-network-access/fetch.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/fetch.https.window.js.ini
@@ -1,5 +1,3 @@
-[fetch.https.window.html?include=from-local]
-
 [fetch.https.window.html?include=baseline]
   [local to public: PUT preflight failure.]
     expected: FAIL
@@ -55,6 +53,8 @@
     expected: FAIL
 
 
+[fetch.https.window.html?include=from-local]
+
 [fetch.https.window.html?include=from-private]
   [private to local: failed preflight.]
     expected: FAIL
@@ -79,17 +79,3 @@
 
   [private to local: no-CORS mode missing PNA header on preflight response.]
     expected: FAIL
-
-
-[fetch.https.window.html?include=from-treat-as-public]
-  [treat-as-public-address to local: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public-address to local: success.]
-    expected: FAIL
-
-  [treat-as-public-address to private: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public-address to private: success.]
-    expected: FAIL
diff --git a/tests/wpt/metadata/fetch/private-network-access/fetch.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/fetch.window.js.ini
index 7f186d41c92..7f186d41c92 100644
--- a/tests/wpt/metadata/fetch/private-network-access/fetch.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/fetch.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/iframe.tentative.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/iframe.tentative.https.window.js.ini
index 5b0348afa74..5b0348afa74 100644
--- a/tests/wpt/metadata/fetch/private-network-access/iframe.tentative.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/iframe.tentative.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/iframe.tentative.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/iframe.tentative.window.js.ini
index ca42692a9d7..ca42692a9d7 100644
--- a/tests/wpt/metadata/fetch/private-network-access/iframe.tentative.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/iframe.tentative.window.js.ini
diff --git a/tests/wpt/metadata/fetch/local-network-access/mixed-content-fetch.tentative.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/mixed-content-fetch.tentative.https.window.js.ini
new file mode 100644
index 00000000000..87f9c6b6f17
--- /dev/null
+++ b/tests/wpt/metadata/fetch/local-network-access/mixed-content-fetch.tentative.https.window.js.ini
@@ -0,0 +1,135 @@
+[mixed-content-fetch.tentative.https.window.html]
+  [https-loopback to http-loopback: wrong targetAddressSpace "unknown".]
+    expected: FAIL
+
+  [https-loopback to http-loopback: wrong targetAddressSpace "local".]
+    expected: FAIL
+
+  [https-loopback to http-loopback: wrong targetAddressSpace "public".]
+    expected: FAIL
+
+  [https-loopback to http-loopback: not a local network request.]
+    expected: FAIL
+
+  [https-loopback to http-local: wrong targetAddressSpace "unknown".]
+    expected: FAIL
+
+  [https-loopback to http-local: wrong targetAddressSpace "loopback".]
+    expected: FAIL
+
+  [https-loopback to http-local: wrong targetAddressSpace "public".]
+    expected: FAIL
+
+  [https-loopback to http-local: not a local network request.]
+    expected: FAIL
+
+  [https-loopback to http-public: wrong targetAddressSpace "unknown".]
+    expected: FAIL
+
+  [https-loopback to http-public: wrong targetAddressSpace "loopback".]
+    expected: FAIL
+
+  [https-loopback to http-public: wrong targetAddressSpace "local".]
+    expected: FAIL
+
+  [https-loopback to http-public: not a local network request.]
+    expected: FAIL
+
+  [https-local to http-loopback: missing targetAddressSpace.]
+    expected: FAIL
+
+  [https-local to http-loopback: wrong targetAddressSpace "unknown".]
+    expected: FAIL
+
+  [https-local to http-loopback: wrong targetAddressSpace "local".]
+    expected: FAIL
+
+  [https-local to http-loopback: wrong targetAddressSpace "public".]
+    expected: FAIL
+
+  [https-local to http-loopback: failed preflight.]
+    expected: FAIL
+
+  [https-local to http-loopback: success.]
+    expected: FAIL
+
+  [https-local to http-local: wrong targetAddressSpace "unknown".]
+    expected: FAIL
+
+  [https-local to http-local: wrong targetAddressSpace "loopback".]
+    expected: FAIL
+
+  [https-local to http-local: wrong targetAddressSpace "public".]
+    expected: FAIL
+
+  [https-local to http-local: not a local network request.]
+    expected: FAIL
+
+  [https-local to http-public: wrong targetAddressSpace "unknown".]
+    expected: FAIL
+
+  [https-local to http-public: wrong targetAddressSpace "loopback".]
+    expected: FAIL
+
+  [https-local to http-public: wrong targetAddressSpace "local".]
+    expected: FAIL
+
+  [https-local to http-public: not a local network request.]
+    expected: FAIL
+
+  [https-public to http-loopback: missing targetAddressSpace.]
+    expected: FAIL
+
+  [https-public to http-loopback: wrong targetAddressSpace "unknown".]
+    expected: FAIL
+
+  [https-public to http-loopback: wrong targetAddressSpace "local".]
+    expected: FAIL
+
+  [https-public to http-loopback: wrong targetAddressSpace "public".]
+    expected: FAIL
+
+  [https-public to http-loopback: failed preflight.]
+    expected: FAIL
+
+  [https-public to http-loopback: success.]
+    expected: FAIL
+
+  [https-public to http-local: missing targetAddressSpace.]
+    expected: FAIL
+
+  [https-public to http-local: wrong targetAddressSpace "unknown".]
+    expected: FAIL
+
+  [https-public to http-local: wrong targetAddressSpace "loopback".]
+    expected: FAIL
+
+  [https-public to http-local: wrong targetAddressSpace "public".]
+    expected: FAIL
+
+  [https-public to http-local: failed preflight.]
+    expected: FAIL
+
+  [https-public to http-local: success.]
+    expected: FAIL
+
+  [https-public to http-public: wrong targetAddressSpace "unknown".]
+    expected: FAIL
+
+  [https-public to http-public: wrong targetAddressSpace "loopback".]
+    expected: FAIL
+
+  [https-public to http-public: wrong targetAddressSpace "local".]
+    expected: FAIL
+
+  [https-public to http-public: not a local network request.]
+    expected: FAIL
+
+  [https-treat-as-public to http-loopback: wrong targetAddressSpace "local".]
+    expected: FAIL
+
+  [https-treat-as-public to http-local: wrong targetAddressSpace "loopback".]
+    expected: FAIL
+
+  [https-treat-as-public to http-local: success.]
+    expected: FAIL
diff --git a/tests/wpt/metadata/fetch/private-network-access/nested-worker.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/nested-worker.https.window.js.ini
index a9b78417a52..a9b78417a52 100644
--- a/tests/wpt/metadata/fetch/private-network-access/nested-worker.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/nested-worker.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/nested-worker.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/nested-worker.window.js.ini
index 3e9038297b0..3e9038297b0 100644
--- a/tests/wpt/metadata/fetch/private-network-access/nested-worker.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/nested-worker.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/preflight-cache.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/preflight-cache.https.window.js.ini
index 552ad51cc01..552ad51cc01 100644
--- a/tests/wpt/metadata/fetch/private-network-access/preflight-cache.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/preflight-cache.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/redirect.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/redirect.https.window.js.ini
index 88e8e246059..88e8e246059 100644
--- a/tests/wpt/metadata/fetch/private-network-access/redirect.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/redirect.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/service-worker-background-fetch.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/service-worker-background-fetch.https.window.js.ini
index 8835e5da97f..8835e5da97f 100644
--- a/tests/wpt/metadata/fetch/private-network-access/service-worker-background-fetch.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/service-worker-background-fetch.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/service-worker-fetch.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/service-worker-fetch.https.window.js.ini
index fdafb082080..fdafb082080 100644
--- a/tests/wpt/metadata/fetch/private-network-access/service-worker-fetch.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/service-worker-fetch.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/service-worker-update.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/service-worker-update.https.window.js.ini
index 3aa79df2da4..3aa79df2da4 100644
--- a/tests/wpt/metadata/fetch/private-network-access/service-worker-update.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/service-worker-update.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/service-worker.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/service-worker.https.window.js.ini
index 4ba4f613562..4ba4f613562 100644
--- a/tests/wpt/metadata/fetch/private-network-access/service-worker.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/service-worker.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/shared-worker-blob-fetch.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/shared-worker-blob-fetch.https.window.js.ini
index 2761ecc3254..2761ecc3254 100644
--- a/tests/wpt/metadata/fetch/private-network-access/shared-worker-blob-fetch.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/shared-worker-blob-fetch.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/shared-worker-blob-fetch.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/shared-worker-blob-fetch.window.js.ini
index 4a32995af78..4a32995af78 100644
--- a/tests/wpt/metadata/fetch/private-network-access/shared-worker-blob-fetch.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/shared-worker-blob-fetch.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/shared-worker-fetch.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/shared-worker-fetch.https.window.js.ini
index 22b714229e3..531ee59cc61 100644
--- a/tests/wpt/metadata/fetch/private-network-access/shared-worker-fetch.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/shared-worker-fetch.https.window.js.ini
@@ -27,15 +27,6 @@
   [public to public: success.]
     expected: NOTRUN
 
-  [treat-as-public to local: failure.]
-    expected: NOTRUN
-
-  [treat-as-public to private: failure.]
-    expected: NOTRUN
-
-  [treat-as-public to public: success.]
-    expected: NOTRUN
-
   [treat-as-public to local: failed preflight.]
     expected: NOTRUN
 
@@ -47,3 +38,6 @@
 
   [treat-as-public to private: success.]
     expected: NOTRUN
+
+  [treat-as-public to public: success.]
+    expected: NOTRUN
diff --git a/tests/wpt/metadata/fetch/private-network-access/shared-worker-fetch.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/shared-worker-fetch.window.js.ini
index f0099d7d57f..d1acbafe5bf 100644
--- a/tests/wpt/metadata/fetch/private-network-access/shared-worker-fetch.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/shared-worker-fetch.window.js.ini
@@ -27,20 +27,14 @@
   [treat-as-public to public: success.]
     expected: NOTRUN
 
-  [private https to local: failure.]
+  [local https to local: success.]
     expected: NOTRUN
 
-  [pubiic https to local: failure.]
+  [private https to local: failure.]
     expected: NOTRUN
 
   [public https to local: failure.]
     expected: NOTRUN
 
-  [local https to local: failure.]
-    expected: NOTRUN
-
-  [local https to local: success.]
-    expected: NOTRUN
-
   [public https to private: failure.]
     expected: NOTRUN
diff --git a/tests/wpt/metadata/fetch/private-network-access/shared-worker.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/shared-worker.https.window.js.ini
index 612a764cb13..612a764cb13 100644
--- a/tests/wpt/metadata/fetch/private-network-access/shared-worker.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/shared-worker.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/shared-worker.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/shared-worker.window.js.ini
index fc70a5d539e..fc70a5d539e 100644
--- a/tests/wpt/metadata/fetch/private-network-access/shared-worker.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/shared-worker.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/websocket.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/websocket.window.js.ini
index fa8c34f6050..fa8c34f6050 100644
--- a/tests/wpt/metadata/fetch/private-network-access/websocket.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/websocket.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/worker-blob-fetch.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/worker-blob-fetch.window.js.ini
index 03a7b6f1d92..25ca088668d 100644
--- a/tests/wpt/metadata/fetch/private-network-access/worker-blob-fetch.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/worker-blob-fetch.window.js.ini
@@ -1,4 +1,7 @@
 [worker-blob-fetch.window.html]
+  [local to local: success.]
+    expected: FAIL
+
   [private to local: failure.]
     expected: FAIL
 
@@ -11,6 +14,9 @@
   [public to private: failure.]
     expected: FAIL
 
+  [public to public: success.]
+    expected: FAIL
+
   [treat-as-public to local: failure.]
     expected: FAIL
 
@@ -20,18 +26,6 @@
   [treat-as-public to public: success.]
     expected: FAIL
 
-  [public https to private: failure.]
-    expected: FAIL
-
-  [public https to local: failure.]
-    expected: FAIL
-
-  [private https to local: failure.]
-    expected: FAIL
-
-  [local to local: success.]
-    expected: FAIL
-
   [local https to local https: success.]
     expected: FAIL
 
@@ -43,6 +37,3 @@
 
   [public https to local https: failure.]
     expected: FAIL
-
-  [public to public: success.]
-    expected: FAIL
diff --git a/tests/wpt/metadata/fetch/private-network-access/worker-fetch.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/worker-fetch.https.window.js.ini
index 6cd5a624687..9a23a9e10af 100644
--- a/tests/wpt/metadata/fetch/private-network-access/worker-fetch.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/worker-fetch.https.window.js.ini
@@ -17,9 +17,6 @@
   [public to private: success.]
     expected: FAIL
 
-  [treat-as-public to local: failure.]
-    expected: FAIL
-
   [treat-as-public to local: failed preflight.]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/fetch/private-network-access/worker-fetch.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/worker-fetch.window.js.ini
index 7877d69e75b..3117a884c7c 100644
--- a/tests/wpt/metadata/fetch/private-network-access/worker-fetch.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/worker-fetch.window.js.ini
@@ -1,7 +1,4 @@
 [worker-fetch.window.html]
-  [treat-as-public to local: failure.]
-    expected: FAIL
-
   [private to local: failure.]
     expected: FAIL
 
@@ -11,6 +8,9 @@
   [public to private: failure.]
     expected: FAIL
 
+  [treat-as-public to local: failure.]
+    expected: FAIL
+
   [treat-as-public to private: failure.]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/fetch/private-network-access/worker.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/worker.https.window.js.ini
index b5f3516a4d3..b5f3516a4d3 100644
--- a/tests/wpt/metadata/fetch/private-network-access/worker.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/worker.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/worker.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/worker.window.js.ini
index cc55ff5bf19..cc55ff5bf19 100644
--- a/tests/wpt/metadata/fetch/private-network-access/worker.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/worker.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/xhr-from-treat-as-public.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/xhr-from-treat-as-public.https.window.js.ini
index ed26f02f650..ed26f02f650 100644
--- a/tests/wpt/metadata/fetch/private-network-access/xhr-from-treat-as-public.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/xhr-from-treat-as-public.https.window.js.ini
diff --git a/tests/wpt/metadata/fetch/private-network-access/xhr.https.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/xhr.https.window.js.ini
index 08c2eedd219..55c3b9c0f4a 100644
--- a/tests/wpt/metadata/fetch/private-network-access/xhr.https.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/xhr.https.window.js.ini
@@ -8,20 +8,6 @@
     expected: FAIL
 
 
-[xhr.https.window.html?include=from-treat-as-public]
-  [treat-as-public to local: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public to local: success.]
-    expected: FAIL
-
-  [treat-as-public to private: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public to private: success.]
-    expected: FAIL
-
-
 [xhr.https.window.html?include=from-public]
   [public to local: failed preflight.]
     expected: FAIL
diff --git a/tests/wpt/metadata/fetch/private-network-access/xhr.window.js.ini b/tests/wpt/metadata/fetch/local-network-access/xhr.window.js.ini
index 341bf6fc075..5b0e01c0942 100644
--- a/tests/wpt/metadata/fetch/private-network-access/xhr.window.js.ini
+++ b/tests/wpt/metadata/fetch/local-network-access/xhr.window.js.ini
@@ -1,7 +1,4 @@
 [xhr.window.html]
-  [treat-as-public-address to local: failure.]
-    expected: FAIL
-
   [private to local: failure.]
     expected: FAIL
 
@@ -11,6 +8,9 @@
   [public to private: failure.]
     expected: FAIL
 
+  [treat-as-public-address to local: failure.]
+    expected: FAIL
+
   [treat-as-public-address to private: failure.]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/fetch/metadata/generated/css-images.sub.tentative.html.ini b/tests/wpt/metadata/fetch/metadata/generated/css-images.sub.tentative.html.ini
index f9de5391ad6..0d48169e3cc 100644
--- a/tests/wpt/metadata/fetch/metadata/generated/css-images.sub.tentative.html.ini
+++ b/tests/wpt/metadata/fetch/metadata/generated/css-images.sub.tentative.html.ini
@@ -146,3 +146,6 @@
 
   [list-style-image sec-fetch-site - HTTPS downgrade-upgrade]
     expected: FAIL
+
+  [background-image sec-fetch-site - HTTPS downgrade (header not sent)]
+    expected: TIMEOUT
diff --git a/tests/wpt/metadata/fetch/private-network-access/mixed-content-fetch.tentative.https.window.js.ini b/tests/wpt/metadata/fetch/private-network-access/mixed-content-fetch.tentative.https.window.js.ini
deleted file mode 100644
index 061d0a797f4..00000000000
--- a/tests/wpt/metadata/fetch/private-network-access/mixed-content-fetch.tentative.https.window.js.ini
+++ /dev/null
@@ -1,135 +0,0 @@
-[mixed-content-fetch.tentative.https.window.html]
-  [https-local to http-local: wrong targetAddressSpace "unknown".]
-    expected: FAIL
-
-  [https-local to http-local: wrong targetAddressSpace "private".]
-    expected: FAIL
-
-  [https-local to http-local: wrong targetAddressSpace "public".]
-    expected: FAIL
-
-  [https-local to http-local: not a private network request.]
-    expected: FAIL
-
-  [https-local to http-private: wrong targetAddressSpace "unknown".]
-    expected: FAIL
-
-  [https-local to http-private: wrong targetAddressSpace "local".]
-    expected: FAIL
-
-  [https-local to http-private: wrong targetAddressSpace "public".]
-    expected: FAIL
-
-  [https-local to http-private: not a private network request.]
-    expected: FAIL
-
-  [https-local to http-public: wrong targetAddressSpace "unknown".]
-    expected: FAIL
-
-  [https-local to http-public: wrong targetAddressSpace "local".]
-    expected: FAIL
-
-  [https-local to http-public: wrong targetAddressSpace "private".]
-    expected: FAIL
-
-  [https-local to http-public: not a private network request.]
-    expected: FAIL
-
-  [https-private to http-local: missing targetAddressSpace.]
-    expected: FAIL
-
-  [https-private to http-local: wrong targetAddressSpace "unknown".]
-    expected: FAIL
-
-  [https-private to http-local: wrong targetAddressSpace "private".]
-    expected: FAIL
-
-  [https-private to http-local: wrong targetAddressSpace "public".]
-    expected: FAIL
-
-  [https-private to http-local: failed preflight.]
-    expected: FAIL
-
-  [https-private to http-local: success.]
-    expected: FAIL
-
-  [https-private to http-private: wrong targetAddressSpace "unknown".]
-    expected: FAIL
-
-  [https-private to http-private: wrong targetAddressSpace "local".]
-    expected: FAIL
-
-  [https-private to http-private: wrong targetAddressSpace "public".]
-    expected: FAIL
-
-  [https-private to http-private: not a private network request.]
-    expected: FAIL
-
-  [https-private to http-public: wrong targetAddressSpace "unknown".]
-    expected: FAIL
-
-  [https-private to http-public: wrong targetAddressSpace "local".]
-    expected: FAIL
-
-  [https-private to http-public: wrong targetAddressSpace "private".]
-    expected: FAIL
-
-  [https-private to http-public: not a private network request.]
-    expected: FAIL
-
-  [https-public to http-local: missing targetAddressSpace.]
-    expected: FAIL
-
-  [https-public to http-local: wrong targetAddressSpace "unknown".]
-    expected: FAIL
-
-  [https-public to http-local: wrong targetAddressSpace "private".]
-    expected: FAIL
-
-  [https-public to http-local: wrong targetAddressSpace "public".]
-    expected: FAIL
-
-  [https-public to http-local: failed preflight.]
-    expected: FAIL
-
-  [https-public to http-local: success.]
-    expected: FAIL
-
-  [https-public to http-private: missing targetAddressSpace.]
-    expected: FAIL
-
-  [https-public to http-private: wrong targetAddressSpace "unknown".]
-    expected: FAIL
-
-  [https-public to http-private: wrong targetAddressSpace "local".]
-    expected: FAIL
-
-  [https-public to http-private: wrong targetAddressSpace "public".]
-    expected: FAIL
-
-  [https-public to http-private: failed preflight.]
-    expected: FAIL
-
-  [https-public to http-private: success.]
-    expected: FAIL
-
-  [https-public to http-public: wrong targetAddressSpace "unknown".]
-    expected: FAIL
-
-  [https-public to http-public: wrong targetAddressSpace "local".]
-    expected: FAIL
-
-  [https-public to http-public: wrong targetAddressSpace "private".]
-    expected: FAIL
-
-  [https-public to http-public: not a private network request.]
-    expected: FAIL
-
-  [https-treat-as-public to http-local: wrong targetAddressSpace "private".]
-    expected: FAIL
-
-  [https-treat-as-public to http-private: wrong targetAddressSpace "local".]
-    expected: FAIL
-
-  [https-treat-as-public to http-private: success.]
-    expected: FAIL
diff --git a/tests/wpt/metadata/html/anonymous-iframe/worker-cookies.tentative.https.window.js.ini b/tests/wpt/metadata/html/anonymous-iframe/worker-cookies.tentative.https.window.js.ini
new file mode 100644
index 00000000000..1ac26e08597
--- /dev/null
+++ b/tests/wpt/metadata/html/anonymous-iframe/worker-cookies.tentative.https.window.js.ini
@@ -0,0 +1,21 @@
+[worker-cookies.tentative.https.window.html?worker=shared_worker]
+  expected: TIMEOUT
+  [Worker spawned from normal iframe can access global cookies]
+    expected: TIMEOUT
+
+  [Worker spawned from credentialless iframe can't access global cookies]
+    expected: NOTRUN
+
+
+[worker-cookies.tentative.https.window.html?worker=service_worker]
+  expected: TIMEOUT
+  [Worker spawned from normal iframe can access global cookies]
+    expected: TIMEOUT
+
+  [Worker spawned from credentialless iframe can't access global cookies]
+    expected: NOTRUN
+
+
+[worker-cookies.tentative.https.window.html?worker=dedicated_worker]
+  [Worker spawned from credentialless iframe can't access global cookies]
+    expected: FAIL
diff --git a/tests/wpt/metadata/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-fragment-scrolling-cross-origin.html.ini b/tests/wpt/metadata/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-fragment-scrolling-cross-origin.html.ini
index 6e9f7acf151..c8a3c8f9e68 100644
--- a/tests/wpt/metadata/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-fragment-scrolling-cross-origin.html.ini
+++ b/tests/wpt/metadata/html/browsers/browsing-the-web/history-traversal/persisted-user-state-restoration/scroll-restoration-fragment-scrolling-cross-origin.html.ini
@@ -1,6 +1,6 @@
 [scroll-restoration-fragment-scrolling-cross-origin.html]
   type: testharness
-  expected: TIMEOUT
+  expected: ERROR
   [Manual scroll restoration should take precedent over scrolling to fragment in cross origin navigation]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/005.html.ini b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/005.html.ini
index f7ee5361549..33efcdbcf48 100644
--- a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/005.html.ini
+++ b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/005.html.ini
@@ -1,4 +1,3 @@
 [005.html]
-  expected: TIMEOUT
   [Link with onclick navigation and href navigation ]
     expected: FAIL
diff --git a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html.ini b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html.ini
index dc1144214ef..dd7320bb46e 100644
--- a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html.ini
+++ b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html.ini
@@ -1,9 +1,10 @@
 [iframe-src-aboutblank-navigate-immediately.html]
+  expected: TIMEOUT
   [Navigating to a different document with window.open]
     expected: FAIL
 
   [Navigating to a different document with form submission]
-    expected: FAIL
+    expected: NOTRUN
 
   [Navigating to a different document with link click]
-    expected: FAIL
+    expected: TIMEOUT
diff --git a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html.ini b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html.ini
index 8ae58f9f1e2..78240a2f463 100644
--- a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html.ini
+++ b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html.ini
@@ -16,6 +16,3 @@
 
   [D83D DE0D set in href="" targeting a frame and clicked]
     expected: FAIL
-
-  [DE0D 0041 set in href="" targeting a frame and clicked]
-    expected: FAIL
diff --git a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/navigate-to-unparseable-url.html.ini b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/navigate-to-unparseable-url.html.ini
index 27889a98fb5..24d2f8ac554 100644
--- a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/navigate-to-unparseable-url.html.ini
+++ b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/navigate-to-unparseable-url.html.ini
@@ -1,6 +1,3 @@
 [navigate-to-unparseable-url.html]
   [location.href setter throws a SyntaxError DOMException for unparseable URLs]
     expected: FAIL
-
-  [<a> tag navigate fails for unparseable URLs]
-    expected: FAIL
diff --git a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js.ini b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js.ini
deleted file mode 100644
index 7dc346632a4..00000000000
--- a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[navigation-unload-same-origin.window.html]
-  [Same-origin navigation started from unload handler must be ignored]
-    expected: FAIL
diff --git a/tests/wpt/metadata/html/browsers/browsing-the-web/read-media/pageload-image-in-popup.html.ini b/tests/wpt/metadata/html/browsers/browsing-the-web/read-media/pageload-image-in-popup.html.ini
deleted file mode 100644
index d993e8dcc42..00000000000
--- a/tests/wpt/metadata/html/browsers/browsing-the-web/read-media/pageload-image-in-popup.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[pageload-image-in-popup.html]
-  [The document for a standalone media file should have one child in the body.]
-    expected: FAIL
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html.ini
new file mode 100644
index 00000000000..4b4820d1729
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html.ini
@@ -0,0 +1,3 @@
+[creating_browsing_context_test_01.html]
+  [first argument: absolute url]
+    expected: FAIL
diff --git a/tests/wpt/metadata/html/browsers/windows/auxiliary-browsing-contexts/opener-setter.html.ini b/tests/wpt/metadata/html/browsers/windows/auxiliary-browsing-contexts/opener-setter.html.ini
new file mode 100644
index 00000000000..64c79a60c4a
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/windows/auxiliary-browsing-contexts/opener-setter.html.ini
@@ -0,0 +1,4 @@
+[opener-setter.html]
+  expected: TIMEOUT
+  [Auxiliary browsing context created via `window.open` and setting `window.opener` to `test` should report `test`]
+    expected: TIMEOUT
diff --git a/tests/wpt/metadata/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected.html.ini b/tests/wpt/metadata/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected.html.ini
index 5cdcce07c65..2a54f2f8814 100644
--- a/tests/wpt/metadata/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected.html.ini
+++ b/tests/wpt/metadata/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected.html.ini
@@ -1,2 +1,2 @@
 [canvas.2d.disconnected.html]
-  expected: FAIL
+  expected: TIMEOUT
diff --git a/tests/wpt/metadata/html/canvas/offscreen/transformations/2d.transformation.scale.large.html.ini b/tests/wpt/metadata/html/canvas/offscreen/transformations/2d.transformation.scale.large.html.ini
index a2f6ef4c2cb..e6c27b72f74 100644
--- a/tests/wpt/metadata/html/canvas/offscreen/transformations/2d.transformation.scale.large.html.ini
+++ b/tests/wpt/metadata/html/canvas/offscreen/transformations/2d.transformation.scale.large.html.ini
@@ -1,4 +1,4 @@
 [2d.transformation.scale.large.html]
+  expected: ERROR
   [scale() with large scale factors works]
-    expected: FAIL
-
+    expected: TIMEOUT
diff --git a/tests/wpt/metadata/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.html.ini b/tests/wpt/metadata/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.html.ini
new file mode 100644
index 00000000000..951f84bb1b2
--- /dev/null
+++ b/tests/wpt/metadata/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.html.ini
@@ -0,0 +1,4 @@
+[2d.transformation.setTransform.multiple.html]
+  expected: ERROR
+  [OffscreenCanvas test: 2d.transformation.setTransform.multiple]
+    expected: TIMEOUT
diff --git a/tests/wpt/metadata/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.worker.js.ini b/tests/wpt/metadata/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.worker.js.ini
new file mode 100644
index 00000000000..1d740cfd1ca
--- /dev/null
+++ b/tests/wpt/metadata/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.worker.js.ini
@@ -0,0 +1,3 @@
+[2d.transformation.setTransform.multiple.worker.html]
+  [2d]
+    expected: FAIL
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
index 841bafc6eca..7df8f9458e9 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
@@ -1,3 +1,4 @@
 [iframe_sandbox_popups_escaping-2.html]
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: FAIL
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
index fe55ddae3f1..eacbe5794ea 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
@@ -1,4 +1,5 @@
 [iframe_sandbox_popups_escaping-3.html]
   type: testharness
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: FAIL
+    expected: TIMEOUT
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
index 47b45e65a1c..3cdeb8ebcbc 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
@@ -1,9 +1,3 @@
 [non-active-document.html]
   [DOMParser]
     expected: FAIL
-
-  [createHTMLDocument]
-    expected: FAIL
-
-  [<template>]
-    expected: FAIL
diff --git a/tests/wpt/metadata/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini b/tests/wpt/metadata/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini
index aa36ec5b723..aac39182097 100644
--- a/tests/wpt/metadata/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini
+++ b/tests/wpt/metadata/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini
@@ -167,9 +167,6 @@
   [multipart/form-data: character not in encoding in filename (formdata event)]
     expected: FAIL
 
-  [multipart/form-data: 0x00 in value (normal form)]
-    expected: FAIL
-
   [multipart/form-data: single quote in value (formdata event)]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/semantics/forms/form-submission-0/text-plain.window.js.ini b/tests/wpt/metadata/html/semantics/forms/form-submission-0/text-plain.window.js.ini
index 155e1335aa4..f523b37700a 100644
--- a/tests/wpt/metadata/html/semantics/forms/form-submission-0/text-plain.window.js.ini
+++ b/tests/wpt/metadata/html/semantics/forms/form-submission-0/text-plain.window.js.ini
@@ -173,8 +173,5 @@
   [text/plain: Basic test (formdata event)]
     expected: FAIL
 
-  [text/plain: Basic File test (formdata event)]
-    expected: FAIL
-
   [text/plain: 0x00 in name (formdata event)]
     expected: FAIL
diff --git a/tests/wpt/metadata/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini b/tests/wpt/metadata/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini
index e21beb8eba0..094fb5842c0 100644
--- a/tests/wpt/metadata/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini
+++ b/tests/wpt/metadata/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini
@@ -155,12 +155,6 @@
   [application/x-www-form-urlencoded: 0x00 in name (formdata event)]
     expected: FAIL
 
-  [application/x-www-form-urlencoded: Basic test (formdata event)]
-    expected: FAIL
-
-  [application/x-www-form-urlencoded: 0x00 in value (normal form)]
-    expected: FAIL
-
   [application/x-www-form-urlencoded: backslash in value (normal form)]
     expected: FAIL
 
@@ -173,8 +167,5 @@
   [application/x-www-form-urlencoded: 0x00 in filename (formdata event)]
     expected: FAIL
 
-  [application/x-www-form-urlencoded: 0x00 in name (normal form)]
-    expected: FAIL
-
   [application/x-www-form-urlencoded: \\r\\n in filename (formdata event)]
     expected: FAIL
diff --git a/tests/wpt/metadata/html/semantics/popovers/popover-types.html.ini b/tests/wpt/metadata/html/semantics/popovers/popover-types.html.ini
index 21598a8f1ec..597f4077508 100644
--- a/tests/wpt/metadata/html/semantics/popovers/popover-types.html.ini
+++ b/tests/wpt/metadata/html/semantics/popovers/popover-types.html.ini
@@ -1,3 +1,4 @@
 [popover-types.html]
+  expected: ERROR
   [manuals do not close popovers]
     expected: FAIL
diff --git a/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-tla-delayed.html.ini b/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-tla-delayed.html.ini
deleted file mode 100644
index f9a4f08cd70..00000000000
--- a/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-tla-delayed.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[module-tla-delayed.html]
-  [document.write in an imported module]
-    expected: FAIL
diff --git a/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini b/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
index e55f8f2ce3c..8845054116d 100644
--- a/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
+++ b/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
@@ -3,6 +3,3 @@
   expected: TIMEOUT
   [The incumbent settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
     expected: TIMEOUT
-
-  [The entry settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
-    expected: FAIL
diff --git a/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini b/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini
index 1d71471b73c..4a48dd15a9d 100644
--- a/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini
+++ b/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini
@@ -1,7 +1,6 @@
 [promise-rejection-events.html]
-  expected: TIMEOUT
   [delayed handling: delaying handling rejected promise created from createImageBitmap will cause both events to fire]
-    expected: TIMEOUT
+    expected: FAIL
 
   [unhandledrejection: from createImageBitmap which is UA triggered]
     expected: FAIL
diff --git a/tests/wpt/metadata/resource-timing/content-type-parsing.html.ini b/tests/wpt/metadata/resource-timing/content-type-parsing.html.ini
index 71ca4ed5411..49b17a921b5 100644
--- a/tests/wpt/metadata/resource-timing/content-type-parsing.html.ini
+++ b/tests/wpt/metadata/resource-timing/content-type-parsing.html.ini
@@ -94,10 +94,10 @@
     expected: FAIL
 
   [mime-type 16 : text/html;charset=\x0bgbk]
-    expected: FAIL
+    expected: TIMEOUT
 
   [mime-type 17 : text/html;charset=\x0cgbk]
-    expected: TIMEOUT
+    expected: NOTRUN
 
   [mime-type 18 : text/html;\x0bcharset=gbk]
     expected: NOTRUN
diff --git a/tests/wpt/metadata/resource-timing/response-status-code.html.ini b/tests/wpt/metadata/resource-timing/response-status-code.html.ini
index b84e3cf7b11..38df5f01300 100644
--- a/tests/wpt/metadata/resource-timing/response-status-code.html.ini
+++ b/tests/wpt/metadata/resource-timing/response-status-code.html.ini
@@ -265,10 +265,10 @@
     expected: FAIL
 
   [This test validates the response status of resources. 88]
-    expected: TIMEOUT
+    expected: FAIL
 
   [This test validates the response status of resources. 89]
-    expected: NOTRUN
+    expected: TIMEOUT
 
   [This test validates the response status of resources. 90]
     expected: NOTRUN
diff --git a/tests/wpt/metadata/wasm/jsapi/functions/entry.html.ini b/tests/wpt/metadata/wasm/jsapi/functions/entry.html.ini
index 145d4a8fe37..2ab19558726 100644
--- a/tests/wpt/metadata/wasm/jsapi/functions/entry.html.ini
+++ b/tests/wpt/metadata/wasm/jsapi/functions/entry.html.ini
@@ -1,6 +1,7 @@
 [entry.html]
+  expected: TIMEOUT
   [Start function]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Sanity check: this all works as expected synchronously]
     expected: FAIL
diff --git a/tests/wpt/metadata/webmessaging/with-ports/017.html.ini b/tests/wpt/metadata/webmessaging/with-ports/017.html.ini
new file mode 100644
index 00000000000..c7946fc91b4
--- /dev/null
+++ b/tests/wpt/metadata/webmessaging/with-ports/017.html.ini
@@ -0,0 +1,4 @@
+[017.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, about:blank]
+    expected: TIMEOUT
diff --git a/tests/wpt/metadata/webmessaging/without-ports/018.html.ini b/tests/wpt/metadata/webmessaging/without-ports/018.html.ini
new file mode 100644
index 00000000000..b7b36c1d3a4
--- /dev/null
+++ b/tests/wpt/metadata/webmessaging/without-ports/018.html.ini
@@ -0,0 +1,4 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
diff --git a/tests/wpt/metadata/webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html.ini b/tests/wpt/metadata/webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html.ini
deleted file mode 100644
index aa6c9e5b826..00000000000
--- a/tests/wpt/metadata/webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html]
-  expected: TIMEOUT
-  [StorageKey: test 3P about:blank window opened from a 3P iframe]
-    expected: TIMEOUT
diff --git a/tests/wpt/mozilla/meta/mozilla/scrollBy.html.ini b/tests/wpt/mozilla/meta/mozilla/scrollBy.html.ini
new file mode 100644
index 00000000000..f78f699f620
--- /dev/null
+++ b/tests/wpt/mozilla/meta/mozilla/scrollBy.html.ini
@@ -0,0 +1,3 @@
+[scrollBy.html]
+  [Ensure that the window.scrollBy function affects scroll position as expected]
+    expected: FAIL
diff --git a/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm.https.any.js b/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm.https.any.js
index 8f1103d8f4a..6e3a6efb12d 100644
--- a/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm.https.any.js
+++ b/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm.https.any.js
@@ -1,4 +1,5 @@
-// META: title=WebCryptoAPI: encrypt() Using AES-GCM
+// META: title=WebCryptoAPI: encrypt() Using AES-GCM w/ 96-bit iv
+// META: script=aes_gcm_96_iv_fixtures.js
 // META: script=aes_gcm_vectors.js
 // META: script=aes.js
 // META: timeout=long
diff --git a/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_256_iv.https.any.js b/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_256_iv.https.any.js
new file mode 100644
index 00000000000..92900fb13ae
--- /dev/null
+++ b/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_256_iv.https.any.js
@@ -0,0 +1,7 @@
+// META: title=WebCryptoAPI: encrypt() Using AES-GCM w/ 256-bit iv
+// META: script=aes_gcm_256_iv_fixtures.js
+// META: script=aes_gcm_vectors.js
+// META: script=aes.js
+// META: timeout=long
+
+run_test();
diff --git a/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_256_iv_fixtures.js b/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_256_iv_fixtures.js
new file mode 100644
index 00000000000..9cdbbbb7907
--- /dev/null
+++ b/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_256_iv_fixtures.js
@@ -0,0 +1,210 @@
+function getFixtures() {
+  // Before we can really start, we need to fill a bunch of buffers with data
+  var plaintext = new Uint8Array([
+    84, 104, 105, 115, 32, 115, 112, 101, 99, 105, 102, 105, 99, 97, 116, 105,
+    111, 110, 32, 100, 101, 115, 99, 114, 105, 98, 101, 115, 32, 97, 32, 74, 97,
+    118, 97, 83, 99, 114, 105, 112, 116, 32, 65, 80, 73, 32, 102, 111, 114, 32,
+    112, 101, 114, 102, 111, 114, 109, 105, 110, 103, 32, 98, 97, 115, 105, 99,
+    32, 99, 114, 121, 112, 116, 111, 103, 114, 97, 112, 104, 105, 99, 32, 111,
+    112, 101, 114, 97, 116, 105, 111, 110, 115, 32, 105, 110, 32, 119, 101, 98,
+    32, 97, 112, 112, 108, 105, 99, 97, 116, 105, 111, 110, 115, 44, 32, 115,
+    117, 99, 104, 32, 97, 115, 32, 104, 97, 115, 104, 105, 110, 103, 44, 32,
+    115, 105, 103, 110, 97, 116, 117, 114, 101, 32, 103, 101, 110, 101, 114, 97,
+    116, 105, 111, 110, 32, 97, 110, 100, 32, 118, 101, 114, 105, 102, 105, 99,
+    97, 116, 105, 111, 110, 44, 32, 97, 110, 100, 32, 101, 110, 99, 114, 121,
+    112, 116, 105, 111, 110, 32, 97, 110, 100, 32, 100, 101, 99, 114, 121, 112,
+    116, 105, 111, 110, 46, 32, 65, 100, 100, 105, 116, 105, 111, 110, 97, 108,
+    108, 121, 44, 32, 105, 116, 32, 100, 101, 115, 99, 114, 105, 98, 101, 115,
+    32, 97, 110, 32, 65, 80, 73, 32, 102, 111, 114, 32, 97, 112, 112, 108, 105,
+    99, 97, 116, 105, 111, 110, 115, 32, 116, 111, 32, 103, 101, 110, 101, 114,
+    97, 116, 101, 32, 97, 110, 100, 47, 111, 114, 32, 109, 97, 110, 97, 103,
+    101, 32, 116, 104, 101, 32, 107, 101, 121, 105, 110, 103, 32, 109, 97, 116,
+    101, 114, 105, 97, 108, 32, 110, 101, 99, 101, 115, 115, 97, 114, 121, 32,
+    116, 111, 32, 112, 101, 114, 102, 111, 114, 109, 32, 116, 104, 101, 115,
+    101, 32, 111, 112, 101, 114, 97, 116, 105, 111, 110, 115, 46, 32, 85, 115,
+    101, 115, 32, 102, 111, 114, 32, 116, 104, 105, 115, 32, 65, 80, 73, 32,
+    114, 97, 110, 103, 101, 32, 102, 114, 111, 109, 32, 117, 115, 101, 114, 32,
+    111, 114, 32, 115, 101, 114, 118, 105, 99, 101, 32, 97, 117, 116, 104, 101,
+    110, 116, 105, 99, 97, 116, 105, 111, 110, 44, 32, 100, 111, 99, 117, 109,
+    101, 110, 116, 32, 111, 114, 32, 99, 111, 100, 101, 32, 115, 105, 103, 110,
+    105, 110, 103, 44, 32, 97, 110, 100, 32, 116, 104, 101, 32, 99, 111, 110,
+    102, 105, 100, 101, 110, 116, 105, 97, 108, 105, 116, 121, 32, 97, 110, 100,
+    32, 105, 110, 116, 101, 103, 114, 105, 116, 121, 32, 111, 102, 32, 99, 111,
+    109, 109, 117, 110, 105, 99, 97, 116, 105, 111, 110, 115, 46,
+  ]);
+
+  // We want some random key bytes of various sizes.
+  // These were randomly generated from a script.
+  var keyBytes = {
+    128: new Uint8Array([
+      222, 192, 212, 252, 191, 60, 71, 65, 200, 146, 218, 189, 28, 212, 192, 78,
+    ]),
+    192: new Uint8Array([
+      208, 238, 131, 65, 63, 68, 196, 63, 186, 208, 61, 207, 166, 18, 99, 152,
+      29, 109, 221, 95, 240, 30, 28, 246,
+    ]),
+    256: new Uint8Array([
+      103, 105, 56, 35, 251, 29, 88, 7, 63, 145, 236, 233, 204, 58, 249, 16,
+      229, 83, 38, 22, 164, 210, 123, 19, 235, 123, 116, 216, 0, 11, 191, 48,
+    ]),
+  };
+
+  // AES-GCM needs an IV of no more than 2^64 - 1 bytes. Arbitrary 32 bytes is okay then.
+  var iv = new Uint8Array([
+    58, 146, 115, 42, 166, 234, 57, 191, 57, 134, 224, 199, 63, 169, 32, 0, 32,
+    33, 117, 56, 94, 248, 173, 234, 194, 200, 115, 53, 235, 146, 141, 212,
+  ]);
+
+  // Authenticated encryption via AES-GCM requires additional data that
+  // will be checked. We use the ASCII encoded Editorial Note
+  // following the Abstract of the Web Cryptography API recommendation.
+  var additionalData = new Uint8Array([
+    84, 104, 101, 114, 101, 32, 97, 114, 101, 32, 55, 32, 102, 117, 114, 116,
+    104, 101, 114, 32, 101, 100, 105, 116, 111, 114, 105, 97, 108, 32, 110, 111,
+    116, 101, 115, 32, 105, 110, 32, 116, 104, 101, 32, 100, 111, 99, 117, 109,
+    101, 110, 116, 46,
+  ]);
+
+  //  The length of the tag defaults to 16 bytes (128 bit).
+  var tag = {
+    128: new Uint8Array([
+      194, 226, 198, 253, 239, 28, 197, 240, 123, 216, 176, 151, 239, 200, 184,
+      183,
+    ]),
+    192: new Uint8Array([
+      183, 57, 32, 144, 164, 76, 121, 77, 58, 86, 62, 132, 53, 130, 96, 225,
+    ]),
+    256: new Uint8Array([
+      188, 239, 241, 48, 159, 21, 213, 0, 241, 42, 85, 76, 194, 28, 49, 60,
+    ]),
+  };
+
+  var tag_with_empty_ad = {
+    128: new Uint8Array([
+      222, 51, 11, 23, 36, 222, 250, 248, 27, 98, 30, 81, 150, 35, 220, 198,
+    ]),
+    192: new Uint8Array([
+      243, 11, 130, 112, 169, 239, 114, 238, 185, 219, 93, 1, 95, 108, 184, 183,
+    ]),
+    256: new Uint8Array([
+      244, 186, 86, 203, 154, 37, 191, 248, 246, 57, 139, 130, 224, 47, 217,
+      238,
+    ]),
+  };
+
+  // Results. These were created using the Python cryptography module.
+
+  // AES-GCM produces ciphertext and a tag.
+  var ciphertext = {
+    128: new Uint8Array([
+      180, 241, 40, 183, 105, 52, 147, 238, 224, 175, 175, 236, 168, 244, 241,
+      121, 9, 202, 225, 237, 56, 216, 253, 254, 186, 102, 111, 207, 228, 190,
+      130, 177, 159, 246, 6, 53, 249, 113, 228, 254, 81, 126, 253, 191, 100, 43,
+      251, 147, 107, 91, 166, 231, 201, 241, 180, 214, 112, 47, 123, 164, 186,
+      134, 54, 65, 22, 181, 201, 82, 236, 59, 52, 139, 172, 39, 41, 89, 123, 62,
+      102, 167, 82, 150, 250, 93, 96, 169, 135, 89, 245, 255, 164, 192, 169,
+      159, 25, 16, 139, 145, 76, 4, 144, 131, 148, 197, 204, 46, 23, 110, 193,
+      228, 127, 120, 242, 24, 54, 240, 181, 162, 98, 244, 249, 68, 134, 122,
+      126, 151, 38, 108, 116, 68, 150, 109, 38, 194, 21, 159, 140, 205, 183, 35,
+      97, 151, 186, 120, 145, 22, 235, 22, 210, 223, 187, 143, 162, 183, 93,
+      196, 104, 51, 96, 53, 234, 250, 184, 76, 237, 157, 37, 203, 226, 87, 222,
+      75, 240, 95, 218, 222, 64, 81, 165, 75, 201, 216, 190, 13, 116, 217, 69,
+      66, 47, 161, 68, 247, 74, 253, 157, 181, 162, 121, 53, 32, 91, 124, 230,
+      105, 224, 17, 187, 50, 61, 77, 103, 79, 71, 57, 163, 116, 234, 149, 27,
+      105, 24, 31, 159, 3, 128, 130, 42, 94, 125, 200, 142, 251, 148, 201, 17,
+      149, 232, 84, 50, 17, 18, 203, 186, 226, 164, 227, 202, 76, 65, 16, 163,
+      224, 132, 52, 31, 101, 129, 72, 171, 159, 42, 177, 253, 98, 86, 201, 95,
+      117, 62, 12, 205, 78, 36, 126, 196, 121, 89, 185, 37, 161, 66, 181, 117,
+      186, 71, 124, 132, 110, 120, 27, 246, 163, 18, 13, 90, 200, 127, 82, 209,
+      241, 170, 73, 247, 137, 96, 244, 254, 251, 119, 71, 156, 27, 107, 53, 33,
+      45, 22, 0, 144, 48, 32, 11, 116, 21, 125, 246, 217, 171, 158, 224, 142,
+      234, 141, 242, 168, 89, 154, 66, 227, 161, 182, 96, 1, 88, 78, 12, 7, 239,
+      30, 206, 31, 89, 111, 107, 42, 37, 241, 148, 232, 1, 8, 251, 117, 146,
+      183, 9, 48, 39, 94, 59, 70, 230, 26, 165, 97, 156, 140, 141, 31, 62, 10,
+      206, 55, 48, 207, 0, 197, 202, 197, 108, 133, 175, 80, 4, 16, 154, 223,
+      255, 4, 196, 188, 178, 240, 29, 13, 120, 5, 225, 202, 3, 35, 225, 158, 92,
+      152, 73, 205, 107, 157, 224, 245, 99, 194, 171, 156, 245, 247, 183, 165,
+      40, 62, 200, 110, 29, 151, 206, 100, 175, 88, 36, 242, 90, 4, 82, 73, 250,
+      140, 245, 217, 9, 153, 35, 242, 206, 78, 197, 121, 115, 15, 80, 128, 101,
+      191, 240, 91, 151, 249, 62, 62, 244, 18, 3, 17, 135, 222, 210, 93, 149,
+      123,
+    ]),
+
+    192: new Uint8Array([
+      126, 160, 166, 112, 227, 212, 106, 186, 175, 70, 24, 28, 86, 149, 31, 154,
+      156, 190, 244, 132, 44, 61, 149, 242, 105, 67, 17, 136, 7, 146, 153, 170,
+      200, 214, 142, 205, 170, 225, 85, 44, 241, 159, 255, 234, 10, 13, 37, 48,
+      255, 21, 141, 176, 60, 117, 73, 130, 247, 204, 144, 102, 167, 89, 203,
+      235, 229, 129, 122, 253, 124, 179, 115, 118, 163, 157, 67, 141, 122, 146,
+      209, 11, 112, 5, 230, 117, 123, 184, 243, 99, 83, 10, 31, 166, 96, 1, 121,
+      44, 10, 241, 24, 43, 184, 187, 25, 239, 246, 176, 108, 230, 127, 25, 42,
+      67, 202, 140, 179, 104, 159, 75, 103, 43, 248, 98, 166, 179, 67, 0, 163,
+      227, 84, 40, 129, 227, 198, 205, 7, 156, 16, 185, 24, 166, 59, 218, 197,
+      114, 74, 34, 126, 22, 226, 226, 85, 212, 69, 83, 163, 185, 68, 109, 182,
+      54, 209, 237, 96, 184, 32, 53, 127, 175, 13, 146, 141, 115, 164, 184, 98,
+      245, 174, 223, 46, 32, 167, 39, 103, 19, 210, 80, 131, 254, 103, 249, 247,
+      29, 120, 31, 105, 241, 103, 169, 249, 93, 153, 74, 56, 53, 239, 157, 132,
+      236, 169, 246, 242, 24, 113, 97, 128, 238, 152, 148, 31, 84, 8, 52, 105,
+      198, 116, 103, 132, 48, 199, 23, 90, 24, 29, 63, 41, 117, 191, 57, 31,
+      209, 128, 60, 119, 175, 84, 141, 177, 165, 169, 195, 35, 163, 105, 146,
+      157, 209, 93, 149, 105, 160, 93, 231, 78, 201, 92, 235, 200, 89, 37, 50,
+      181, 30, 213, 242, 59, 156, 219, 19, 158, 17, 224, 81, 108, 52, 87, 248,
+      101, 23, 39, 107, 67, 151, 103, 230, 126, 202, 184, 118, 226, 18, 29, 93,
+      37, 208, 40, 82, 113, 35, 157, 145, 152, 50, 253, 140, 47, 141, 192, 1,
+      148, 114, 40, 10, 112, 79, 227, 16, 105, 247, 31, 49, 102, 195, 75, 183,
+      172, 254, 188, 42, 89, 77, 38, 104, 1, 180, 106, 61, 71, 70, 35, 160, 103,
+      101, 244, 26, 226, 37, 159, 155, 4, 107, 222, 219, 136, 37, 24, 246, 44,
+      23, 44, 248, 132, 108, 59, 179, 99, 145, 132, 82, 53, 203, 111, 150, 55,
+      123, 51, 214, 165, 108, 124, 179, 131, 174, 139, 224, 114, 96, 218, 181,
+      243, 128, 198, 98, 115, 92, 95, 165, 23, 229, 108, 146, 14, 244, 162, 37,
+      85, 201, 33, 44, 92, 106, 112, 185, 16, 189, 42, 114, 109, 59, 124, 131,
+      16, 211, 31, 97, 29, 135, 61, 150, 75, 250, 207, 129, 38, 205, 187, 186,
+      55, 207, 232, 24, 48, 232, 49, 226, 16, 12, 27, 70, 31, 124, 128, 218,
+      100, 91, 200, 184, 78, 252, 100, 235, 62, 43, 69, 214, 163, 65, 14, 44,
+      180,
+    ]),
+
+    256: new Uint8Array([
+      8, 97, 235, 113, 70, 32, 135, 131, 210, 209, 124, 160, 255, 182, 9, 29,
+      125, 193, 27, 240, 129, 46, 2, 137, 169, 142, 61, 7, 145, 54, 170, 207,
+      159, 111, 39, 95, 87, 63, 162, 27, 6, 18, 219, 215, 116, 34, 90, 57, 114,
+      244, 102, 145, 67, 6, 51, 152, 247, 165, 242, 116, 100, 219, 177, 72, 177,
+      17, 110, 67, 93, 219, 100, 217, 20, 207, 89, 154, 45, 37, 105, 83, 67,
+      162, 140, 235, 129, 40, 177, 202, 174, 54, 148, 55, 156, 193, 232, 249,
+      134, 163, 195, 51, 114, 116, 65, 38, 73, 99, 96, 249, 224, 69, 17, 119,
+      186, 188, 181, 43, 78, 156, 76, 138, 226, 63, 5, 248, 9, 94, 26, 1, 2,
+      235, 39, 174, 74, 47, 183, 22, 40, 47, 47, 13, 100, 119, 12, 67, 178, 184,
+      56, 167, 238, 143, 13, 44, 208, 185, 151, 108, 6, 17, 52, 122, 182, 210,
+      207, 42, 219, 37, 74, 94, 126, 36, 249, 37, 32, 4, 218, 44, 238, 69, 56,
+      219, 31, 77, 173, 46, 187, 103, 36, 112, 213, 252, 40, 87, 164, 240, 163,
+      159, 32, 129, 125, 178, 108, 47, 28, 31, 36, 42, 115, 36, 14, 145, 195,
+      156, 191, 46, 163, 249, 181, 31, 90, 73, 30, 72, 57, 223, 63, 60, 79, 140,
+      14, 117, 31, 145, 222, 156, 121, 237, 32, 145, 143, 96, 12, 254, 35, 21,
+      21, 59, 168, 171, 154, 217, 0, 59, 202, 175, 103, 214, 192, 175, 26, 18,
+      43, 54, 176, 222, 75, 22, 7, 122, 253, 224, 145, 61, 42, 208, 73, 237, 84,
+      141, 209, 213, 228, 46, 244, 59, 9, 68, 6, 35, 88, 189, 10, 62, 9, 85, 28,
+      44, 82, 19, 153, 160, 178, 240, 56, 160, 244, 201, 173, 77, 61, 20, 227,
+      30, 180, 167, 16, 105, 185, 193, 95, 207, 41, 23, 134, 78, 198, 182, 93,
+      24, 89, 247, 231, 75, 233, 194, 137, 242, 114, 194, 190, 130, 138, 238,
+      94, 137, 193, 194, 115, 137, 190, 207, 169, 83, 155, 14, 210, 160, 129,
+      195, 161, 234, 221, 255, 114, 67, 98, 12, 93, 41, 65, 183, 244, 103, 247,
+      101, 82, 246, 125, 87, 125, 78, 21, 186, 102, 205, 20, 40, 32, 201, 174,
+      15, 52, 240, 217, 180, 162, 108, 6, 211, 41, 18, 135, 232, 184, 18, 188,
+      169, 157, 190, 76, 166, 75, 176, 127, 39, 251, 22, 203, 153, 80, 49, 241,
+      124, 137, 151, 123, 204, 43, 159, 190, 177, 196, 18, 117, 169, 46, 152,
+      251, 45, 25, 164, 27, 145, 214, 228, 55, 15, 2, 131, 216, 80, 255, 204,
+      175, 100, 59, 145, 15, 103, 40, 33, 45, 255, 200, 254, 172, 138, 20, 58,
+      87, 182, 192, 148, 219, 41, 88, 230, 229, 70, 249,
+    ]),
+  };
+
+  return {
+    plaintext,
+    keyBytes,
+    iv,
+    additionalData,
+    tag,
+    tag_with_empty_ad,
+    ciphertext,
+  };
+}
diff --git a/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_96_iv_fixtures.js b/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_96_iv_fixtures.js
new file mode 100644
index 00000000000..bb00e2d7dd9
--- /dev/null
+++ b/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_96_iv_fixtures.js
@@ -0,0 +1,209 @@
+function getFixtures() {
+  // Before we can really start, we need to fill a bunch of buffers with data
+  var plaintext = new Uint8Array([
+    84, 104, 105, 115, 32, 115, 112, 101, 99, 105, 102, 105, 99, 97, 116, 105,
+    111, 110, 32, 100, 101, 115, 99, 114, 105, 98, 101, 115, 32, 97, 32, 74, 97,
+    118, 97, 83, 99, 114, 105, 112, 116, 32, 65, 80, 73, 32, 102, 111, 114, 32,
+    112, 101, 114, 102, 111, 114, 109, 105, 110, 103, 32, 98, 97, 115, 105, 99,
+    32, 99, 114, 121, 112, 116, 111, 103, 114, 97, 112, 104, 105, 99, 32, 111,
+    112, 101, 114, 97, 116, 105, 111, 110, 115, 32, 105, 110, 32, 119, 101, 98,
+    32, 97, 112, 112, 108, 105, 99, 97, 116, 105, 111, 110, 115, 44, 32, 115,
+    117, 99, 104, 32, 97, 115, 32, 104, 97, 115, 104, 105, 110, 103, 44, 32,
+    115, 105, 103, 110, 97, 116, 117, 114, 101, 32, 103, 101, 110, 101, 114, 97,
+    116, 105, 111, 110, 32, 97, 110, 100, 32, 118, 101, 114, 105, 102, 105, 99,
+    97, 116, 105, 111, 110, 44, 32, 97, 110, 100, 32, 101, 110, 99, 114, 121,
+    112, 116, 105, 111, 110, 32, 97, 110, 100, 32, 100, 101, 99, 114, 121, 112,
+    116, 105, 111, 110, 46, 32, 65, 100, 100, 105, 116, 105, 111, 110, 97, 108,
+    108, 121, 44, 32, 105, 116, 32, 100, 101, 115, 99, 114, 105, 98, 101, 115,
+    32, 97, 110, 32, 65, 80, 73, 32, 102, 111, 114, 32, 97, 112, 112, 108, 105,
+    99, 97, 116, 105, 111, 110, 115, 32, 116, 111, 32, 103, 101, 110, 101, 114,
+    97, 116, 101, 32, 97, 110, 100, 47, 111, 114, 32, 109, 97, 110, 97, 103,
+    101, 32, 116, 104, 101, 32, 107, 101, 121, 105, 110, 103, 32, 109, 97, 116,
+    101, 114, 105, 97, 108, 32, 110, 101, 99, 101, 115, 115, 97, 114, 121, 32,
+    116, 111, 32, 112, 101, 114, 102, 111, 114, 109, 32, 116, 104, 101, 115,
+    101, 32, 111, 112, 101, 114, 97, 116, 105, 111, 110, 115, 46, 32, 85, 115,
+    101, 115, 32, 102, 111, 114, 32, 116, 104, 105, 115, 32, 65, 80, 73, 32,
+    114, 97, 110, 103, 101, 32, 102, 114, 111, 109, 32, 117, 115, 101, 114, 32,
+    111, 114, 32, 115, 101, 114, 118, 105, 99, 101, 32, 97, 117, 116, 104, 101,
+    110, 116, 105, 99, 97, 116, 105, 111, 110, 44, 32, 100, 111, 99, 117, 109,
+    101, 110, 116, 32, 111, 114, 32, 99, 111, 100, 101, 32, 115, 105, 103, 110,
+    105, 110, 103, 44, 32, 97, 110, 100, 32, 116, 104, 101, 32, 99, 111, 110,
+    102, 105, 100, 101, 110, 116, 105, 97, 108, 105, 116, 121, 32, 97, 110, 100,
+    32, 105, 110, 116, 101, 103, 114, 105, 116, 121, 32, 111, 102, 32, 99, 111,
+    109, 109, 117, 110, 105, 99, 97, 116, 105, 111, 110, 115, 46,
+  ]);
+
+  // We want some random key bytes of various sizes.
+  // These were randomly generated from a script.
+  var keyBytes = {
+    128: new Uint8Array([
+      222, 192, 212, 252, 191, 60, 71, 65, 200, 146, 218, 189, 28, 212, 192, 78,
+    ]),
+    192: new Uint8Array([
+      208, 238, 131, 65, 63, 68, 196, 63, 186, 208, 61, 207, 166, 18, 99, 152,
+      29, 109, 221, 95, 240, 30, 28, 246,
+    ]),
+    256: new Uint8Array([
+      103, 105, 56, 35, 251, 29, 88, 7, 63, 145, 236, 233, 204, 58, 249, 16,
+      229, 83, 38, 22, 164, 210, 123, 19, 235, 123, 116, 216, 0, 11, 191, 48,
+    ]),
+  };
+
+  // AES-GCM specification recommends that the IV should be 96 bits long.
+  var iv = new Uint8Array([
+    58, 146, 115, 42, 166, 234, 57, 191, 57, 134, 224, 199,
+  ]);
+
+  // Authenticated encryption via AES-GCM requires additional data that
+  // will be checked. We use the ASCII encoded Editorial Note
+  // following the Abstract of the Web Cryptography API recommendation.
+  var additionalData = new Uint8Array([
+    84, 104, 101, 114, 101, 32, 97, 114, 101, 32, 55, 32, 102, 117, 114, 116,
+    104, 101, 114, 32, 101, 100, 105, 116, 111, 114, 105, 97, 108, 32, 110, 111,
+    116, 101, 115, 32, 105, 110, 32, 116, 104, 101, 32, 100, 111, 99, 117, 109,
+    101, 110, 116, 46,
+  ]);
+
+  //  The length of the tag defaults to 16 bytes (128 bit).
+  var tag = {
+    128: new Uint8Array([
+      180, 165, 14, 180, 121, 113, 220, 168, 254, 117, 18, 66, 110, 98, 146,
+      240,
+    ]),
+    192: new Uint8Array([
+      43, 102, 63, 121, 1, 120, 252, 2, 95, 149, 99, 207, 161, 10, 139, 159,
+    ]),
+    256: new Uint8Array([
+      53, 0, 70, 11, 217, 64, 250, 241, 175, 160, 37, 78, 92, 160, 107, 38,
+    ]),
+  };
+
+  var tag_with_empty_ad = {
+    128: new Uint8Array([
+      168, 116, 195, 94, 178, 179, 227, 160, 158, 207, 188, 132, 23, 137, 246,
+      129,
+    ]),
+    192: new Uint8Array([
+      111, 84, 157, 153, 12, 219, 247, 161, 220, 24, 0, 74, 203, 228, 83, 201,
+    ]),
+    256: new Uint8Array([
+      125, 85, 225, 240, 220, 112, 144, 9, 168, 179, 251, 128, 126, 147, 131,
+      244,
+    ]),
+  };
+
+  // Results. These were created using OpenSSL.
+
+  // AES-GCM produces ciphertext and a tag.
+  var ciphertext = {
+    128: new Uint8Array([
+      46, 244, 139, 198, 120, 180, 9, 39, 83, 58, 203, 107, 69, 71, 8, 165, 132,
+      200, 94, 31, 228, 120, 170, 81, 241, 29, 38, 175, 99, 215, 241, 157, 144,
+      97, 35, 42, 36, 231, 2, 94, 214, 140, 67, 48, 189, 242, 21, 208, 110, 179,
+      30, 90, 181, 105, 242, 17, 244, 42, 42, 36, 125, 228, 82, 250, 87, 199,
+      95, 168, 210, 57, 174, 20, 220, 188, 107, 65, 242, 43, 217, 122, 145, 160,
+      100, 139, 54, 135, 175, 139, 115, 89, 15, 236, 234, 83, 2, 135, 51, 125,
+      63, 168, 184, 235, 148, 68, 132, 124, 166, 171, 53, 68, 94, 187, 31, 68,
+      119, 47, 252, 73, 63, 138, 154, 84, 167, 0, 54, 33, 11, 200, 22, 91, 245,
+      62, 64, 192, 7, 180, 210, 52, 233, 23, 24, 181, 50, 230, 63, 118, 228, 24,
+      1, 242, 75, 62, 196, 222, 122, 154, 227, 125, 89, 73, 112, 100, 154, 249,
+      61, 141, 126, 145, 46, 247, 102, 242, 62, 148, 94, 172, 128, 181, 110, 6,
+      7, 209, 58, 222, 51, 169, 83, 189, 200, 47, 22, 80, 49, 169, 227, 245,
+      165, 24, 96, 152, 228, 14, 252, 199, 193, 148, 46, 84, 49, 248, 198, 7, 0,
+      134, 255, 174, 151, 103, 48, 154, 178, 198, 103, 45, 226, 118, 19, 41, 85,
+      2, 55, 71, 7, 6, 0, 24, 150, 145, 227, 162, 126, 102, 248, 134, 116, 174,
+      215, 217, 166, 160, 140, 129, 21, 220, 131, 110, 242, 94, 249, 103, 151,
+      154, 81, 225, 35, 111, 131, 129, 111, 172, 214, 168, 30, 169, 71, 210, 64,
+      68, 56, 228, 223, 248, 233, 234, 140, 86, 145, 121, 29, 232, 55, 165, 61,
+      175, 147, 66, 33, 92, 6, 209, 241, 149, 73, 77, 9, 104, 2, 154, 247, 92,
+      87, 159, 191, 113, 82, 122, 148, 89, 28, 122, 111, 93, 110, 60, 42, 34,
+      70, 161, 14, 50, 153, 238, 189, 173, 99, 10, 118, 252, 1, 28, 67, 151,
+      114, 46, 78, 181, 78, 233, 183, 6, 254, 57, 29, 53, 118, 175, 80, 97, 156,
+      237, 219, 196, 71, 80, 161, 248, 139, 96, 124, 181, 154, 124, 149, 219,
+      47, 90, 11, 98, 63, 21, 64, 144, 77, 161, 204, 127, 209, 209, 7, 86, 65,
+      39, 142, 251, 183, 43, 227, 120, 155, 72, 70, 204, 89, 227, 199, 203, 28,
+      128, 23, 104, 188, 215, 32, 190, 18, 156, 57, 105, 7, 179, 155, 136, 236,
+      82, 173, 156, 170, 124, 210, 22, 11, 27, 182, 236, 109, 200, 172, 227, 72,
+      37, 1, 175, 9, 214, 227, 23, 141, 169, 215, 77, 134, 76, 229, 169, 241,
+      116, 222, 157, 77, 158, 213, 118, 223, 17, 31, 212, 97, 21, 237, 83, 2,
+      218, 239, 59, 147, 30, 169, 97, 12,
+    ]),
+
+    192: new Uint8Array([
+      129, 16, 61, 38, 99, 56, 226, 139, 71, 251, 211, 15, 91, 152, 159, 219,
+      112, 147, 210, 73, 97, 204, 203, 240, 183, 243, 104, 241, 37, 67, 169,
+      198, 56, 76, 96, 202, 250, 212, 177, 157, 93, 115, 247, 176, 19, 3, 229,
+      102, 75, 200, 252, 222, 197, 58, 31, 44, 123, 151, 9, 191, 88, 123, 35,
+      48, 47, 25, 149, 35, 191, 219, 223, 94, 251, 152, 109, 171, 225, 31, 236,
+      252, 223, 174, 128, 238, 173, 32, 32, 79, 22, 100, 112, 215, 153, 128, 63,
+      158, 247, 18, 215, 81, 247, 208, 91, 28, 223, 222, 170, 9, 135, 210, 143,
+      47, 247, 132, 183, 252, 84, 19, 78, 85, 17, 215, 20, 51, 32, 124, 149,
+      172, 129, 202, 161, 217, 207, 24, 45, 177, 11, 106, 17, 108, 17, 12, 6,
+      62, 90, 132, 2, 54, 96, 90, 30, 239, 216, 173, 76, 67, 7, 221, 62, 124,
+      228, 156, 243, 31, 111, 160, 192, 188, 87, 107, 182, 138, 95, 122, 152,
+      202, 51, 118, 100, 124, 67, 220, 116, 52, 99, 15, 39, 2, 14, 209, 173,
+      119, 88, 6, 174, 106, 236, 150, 28, 189, 112, 161, 224, 186, 58, 110, 91,
+      54, 211, 132, 149, 7, 188, 77, 232, 118, 197, 43, 107, 101, 179, 44, 195,
+      159, 4, 124, 5, 30, 48, 227, 251, 199, 72, 98, 177, 206, 234, 228, 58,
+      191, 150, 28, 211, 29, 182, 138, 141, 249, 152, 142, 244, 203, 210, 128,
+      143, 244, 44, 187, 251, 221, 101, 152, 31, 119, 194, 51, 27, 167, 215,
+      122, 244, 193, 224, 191, 198, 210, 2, 143, 185, 207, 145, 228, 193, 153,
+      207, 119, 167, 75, 145, 43, 17, 1, 42, 146, 164, 21, 15, 164, 221, 216,
+      140, 122, 248, 49, 19, 246, 84, 214, 176, 226, 118, 140, 130, 123, 163,
+      217, 61, 198, 243, 182, 217, 52, 127, 190, 127, 135, 18, 239, 163, 195,
+      102, 136, 227, 128, 38, 244, 49, 208, 229, 249, 126, 157, 100, 72, 246,
+      10, 102, 163, 241, 155, 112, 165, 95, 32, 61, 66, 24, 233, 123, 236, 190,
+      124, 214, 65, 135, 114, 118, 122, 222, 196, 47, 120, 120, 64, 117, 253,
+      165, 28, 17, 152, 104, 119, 10, 53, 140, 109, 79, 246, 246, 28, 104, 228,
+      175, 102, 71, 246, 183, 79, 30, 31, 186, 32, 64, 146, 72, 228, 1, 175,
+      252, 115, 254, 95, 66, 87, 196, 134, 41, 115, 165, 206, 253, 245, 147,
+      137, 163, 230, 235, 238, 77, 218, 74, 157, 65, 97, 43, 198, 130, 190, 195,
+      142, 22, 166, 4, 179, 184, 167, 254, 156, 243, 38, 46, 66, 68, 252, 252,
+      161, 209, 83, 177, 128, 115, 92, 158, 182, 177, 185, 23, 39, 138, 245, 29,
+      216, 17, 178, 142, 225, 135, 8, 115,
+    ]),
+
+    256: new Uint8Array([
+      191, 72, 167, 1, 122, 218, 148, 218, 15, 239, 202, 129, 96, 108, 229, 157,
+      138, 161, 232, 71, 80, 188, 118, 61, 75, 105, 120, 201, 14, 102, 102, 240,
+      111, 131, 180, 83, 95, 73, 2, 138, 205, 56, 9, 137, 227, 235, 73, 71, 200,
+      62, 246, 0, 223, 209, 3, 255, 113, 112, 63, 103, 41, 154, 77, 13, 149, 89,
+      94, 79, 132, 193, 114, 40, 158, 33, 55, 242, 130, 109, 136, 69, 124, 130,
+      150, 40, 69, 211, 224, 154, 209, 243, 65, 58, 230, 253, 31, 21, 72, 102,
+      18, 250, 139, 230, 235, 11, 108, 184, 133, 108, 181, 138, 188, 189, 91,
+      91, 115, 216, 68, 9, 229, 30, 154, 132, 118, 219, 183, 235, 177, 197, 221,
+      58, 13, 90, 126, 198, 74, 87, 162, 226, 7, 51, 184, 15, 209, 81, 86, 138,
+      169, 154, 12, 206, 58, 187, 228, 177, 68, 65, 62, 68, 141, 93, 241, 105,
+      29, 239, 20, 102, 222, 49, 209, 18, 162, 247, 200, 240, 122, 244, 204,
+      148, 67, 58, 118, 164, 95, 230, 68, 242, 203, 138, 145, 132, 6, 224, 206,
+      234, 131, 183, 137, 249, 2, 11, 254, 123, 235, 70, 14, 136, 207, 76, 57,
+      22, 38, 49, 197, 219, 123, 43, 241, 191, 64, 211, 152, 178, 140, 165, 1,
+      189, 52, 79, 184, 213, 56, 215, 182, 27, 27, 70, 243, 101, 255, 50, 108,
+      210, 105, 13, 22, 218, 176, 238, 36, 113, 251, 18, 218, 138, 214, 193, 21,
+      122, 224, 125, 118, 134, 161, 174, 130, 86, 233, 149, 151, 33, 31, 88, 63,
+      91, 63, 209, 145, 158, 109, 42, 176, 43, 23, 151, 49, 101, 199, 35, 101,
+      158, 139, 198, 219, 209, 125, 221, 205, 99, 69, 142, 165, 139, 110, 220,
+      184, 226, 238, 149, 161, 175, 171, 167, 170, 65, 19, 156, 166, 219, 231,
+      87, 20, 226, 58, 210, 134, 110, 160, 176, 118, 250, 73, 86, 213, 116, 53,
+      114, 24, 101, 34, 185, 59, 237, 47, 39, 206, 67, 12, 74, 236, 130, 7, 249,
+      217, 203, 245, 122, 14, 230, 53, 203, 126, 93, 131, 51, 2, 0, 231, 161,
+      111, 42, 126, 173, 121, 80, 179, 59, 186, 133, 236, 252, 188, 149, 99,
+      221, 182, 55, 5, 38, 83, 132, 43, 123, 233, 174, 208, 140, 165, 77, 1,
+      202, 46, 6, 183, 207, 246, 125, 37, 110, 226, 61, 155, 194, 198, 153, 107,
+      1, 8, 0, 23, 124, 18, 4, 144, 235, 146, 77, 220, 123, 152, 114, 219, 127,
+      59, 126, 10, 79, 106, 198, 11, 27, 111, 11, 155, 1, 137, 38, 74, 3, 248,
+      225, 221, 203, 86, 4, 148, 25, 88, 144, 185, 38, 114, 139, 48, 74, 82,
+      172, 36, 115, 193, 223, 220, 144, 69, 91, 5, 83, 56, 138, 63,
+    ]),
+  };
+
+  return {
+    plaintext,
+    keyBytes,
+    iv,
+    additionalData,
+    tag,
+    tag_with_empty_ad,
+    ciphertext,
+  };
+}
diff --git a/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_vectors.js b/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_vectors.js
index bc406f8f0ef..965fe9564d4 100644
--- a/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_vectors.js
+++ b/tests/wpt/web-platform-tests/WebCryptoAPI/encrypt_decrypt/aes_gcm_vectors.js
@@ -1,4 +1,3 @@
-
 // aes_gcm_vectors.js
 
 // The following function returns an array of test vectors
@@ -12,200 +11,15 @@
 //     plaintext - the text to encrypt
 //     result - the expected result (usually just ciphertext, sometimes with added authentication)
 function getTestVectors() {
-    // Before we can really start, we need to fill a bunch of buffers with data
-    var plaintext = new Uint8Array([84, 104, 105, 115, 32, 115,
-        112, 101, 99, 105, 102, 105, 99, 97, 116, 105, 111, 110,
-        32, 100, 101, 115, 99, 114, 105, 98, 101, 115, 32, 97, 32,
-        74, 97, 118, 97, 83, 99, 114, 105, 112, 116, 32, 65, 80,
-        73, 32, 102, 111, 114, 32, 112, 101, 114, 102, 111, 114,
-        109, 105, 110, 103, 32, 98, 97, 115, 105, 99, 32, 99, 114,
-        121, 112, 116, 111, 103, 114, 97, 112, 104, 105, 99, 32,
-        111, 112, 101, 114, 97, 116, 105, 111, 110, 115, 32, 105,
-        110, 32, 119, 101, 98, 32, 97, 112, 112, 108, 105, 99, 97,
-        116, 105, 111, 110, 115, 44, 32, 115, 117, 99, 104, 32, 97,
-        115, 32, 104, 97, 115, 104, 105, 110, 103, 44, 32, 115,
-        105, 103, 110, 97, 116, 117, 114, 101, 32, 103, 101, 110,
-        101, 114, 97, 116, 105, 111, 110, 32, 97, 110, 100, 32,
-        118, 101, 114, 105, 102, 105, 99, 97, 116, 105, 111, 110,
-        44, 32, 97, 110, 100, 32, 101, 110, 99, 114, 121, 112,
-        116, 105, 111, 110, 32, 97, 110, 100, 32, 100, 101, 99,
-        114, 121, 112, 116, 105, 111, 110, 46, 32, 65, 100, 100,
-        105, 116, 105, 111, 110, 97, 108, 108, 121, 44, 32, 105,
-        116, 32, 100, 101, 115, 99, 114, 105, 98, 101, 115, 32, 97,
-        110, 32, 65, 80, 73, 32, 102, 111, 114, 32, 97, 112, 112,
-        108, 105, 99, 97, 116, 105, 111, 110, 115, 32, 116, 111,
-        32, 103, 101, 110, 101, 114, 97, 116, 101, 32, 97, 110,
-        100, 47, 111, 114, 32, 109, 97, 110, 97, 103, 101, 32, 116,
-        104, 101, 32, 107, 101, 121, 105, 110, 103, 32, 109, 97,
-        116, 101, 114, 105, 97, 108, 32, 110, 101, 99, 101, 115,
-        115, 97, 114, 121, 32, 116, 111, 32, 112, 101, 114, 102,
-        111, 114, 109, 32, 116, 104, 101, 115, 101, 32, 111, 112,
-        101, 114, 97, 116, 105, 111, 110, 115, 46, 32, 85, 115,
-        101, 115, 32, 102, 111, 114, 32, 116, 104, 105, 115, 32,
-        65, 80, 73, 32, 114, 97, 110, 103, 101, 32, 102, 114, 111,
-        109, 32, 117, 115, 101, 114, 32, 111, 114, 32, 115, 101,
-        114, 118, 105, 99, 101, 32, 97, 117, 116, 104, 101, 110,
-        116, 105, 99, 97, 116, 105, 111, 110, 44, 32, 100, 111,
-        99, 117, 109, 101, 110, 116, 32, 111, 114, 32, 99, 111,
-        100, 101, 32, 115, 105, 103, 110, 105, 110, 103, 44, 32,
-        97, 110, 100, 32, 116, 104, 101, 32, 99, 111, 110, 102,
-        105, 100, 101, 110, 116, 105, 97, 108, 105, 116, 121, 32,
-        97, 110, 100, 32, 105, 110, 116, 101, 103, 114, 105, 116,
-        121, 32, 111, 102, 32, 99, 111, 109, 109, 117, 110, 105,
-        99, 97, 116, 105, 111, 110, 115, 46]);
-
-    // We want some random key bytes of various sizes.
-    // These were randomly generated from a script.
-    var keyBytes = {
-        128: new Uint8Array([222, 192, 212, 252, 191, 60, 71,
-            65, 200, 146, 218, 189, 28, 212, 192, 78]),
-        192: new Uint8Array([208, 238, 131, 65, 63, 68, 196, 63, 186, 208,
-            61, 207, 166, 18, 99, 152, 29, 109, 221, 95, 240, 30, 28, 246]),
-        256: new Uint8Array([103, 105, 56, 35, 251, 29, 88, 7, 63, 145, 236,
-            233, 204, 58, 249, 16, 229, 83, 38, 22, 164, 210, 123, 19, 235, 123, 116,
-            216, 0, 11, 191, 48])
-    }
-
-    // AES-GCM needs an IV of no more than 2^64 - 1 bytes. Well, 32 bytes is okay then.
-    var iv = new Uint8Array([58, 146, 115, 42, 166, 234, 57,
-        191, 57, 134, 224, 199, 63, 169, 32, 0, 32, 33, 117, 56,
-        94, 248, 173, 234, 194, 200, 115, 53, 235, 146, 141, 212]);
-
-    // Authenticated encryption via AES-GCM requires additional data that
-    // will be checked. We use the ASCII encoded Editorial Note
-    // following the Abstract of the Web Cryptography API recommendation.
-    var additionalData = new Uint8Array([84, 104, 101, 114, 101,
-        32, 97, 114, 101, 32, 55, 32, 102, 117, 114, 116, 104, 101,
-        114, 32, 101, 100, 105, 116, 111, 114, 105, 97, 108, 32,
-        110, 111, 116, 101, 115, 32, 105, 110, 32, 116, 104, 101,
-        32, 100, 111, 99, 117, 109, 101, 110, 116, 46]);
-
-    //  The length of the tag defaults to 16 bytes (128 bit).
-    var tag = {
-        128: new Uint8Array([194, 226, 198, 253, 239, 28,
-            197, 240, 123, 216, 176, 151, 239, 200, 184, 183]),
-        192: new Uint8Array([183, 57, 32, 144, 164, 76, 121, 77, 58,
-            86, 62, 132, 53, 130, 96, 225]),
-        256: new Uint8Array([188, 239, 241, 48, 159, 21, 213, 0, 241,
-            42, 85, 76, 194, 28, 49, 60])
-    };
-
-    var tag_with_empty_ad = {
-        128: new Uint8Array([222, 51, 11, 23, 36, 222, 250, 248, 27, 98, 30, 81, 150, 35, 220, 198]),
-        192: new Uint8Array([243, 11, 130, 112, 169, 239, 114, 238, 185, 219, 93, 1, 95, 108, 184, 183]),
-        256: new Uint8Array([244, 186, 86, 203, 154, 37, 191, 248, 246, 57, 139, 130, 224, 47, 217, 238])
-    };
-
-
-    // Results. These were created using the Python cryptography module.
-
-    // AES-GCM produces ciphertext and a tag.
-    var ciphertext = {
-        128: new Uint8Array([180, 241, 40, 183, 105,
-            52, 147, 238, 224, 175, 175, 236, 168, 244, 241, 121, 9,
-            202, 225, 237, 56, 216, 253, 254, 186, 102, 111, 207, 228,
-            190, 130, 177, 159, 246, 6, 53, 249, 113, 228, 254, 81,
-            126, 253, 191, 100, 43, 251, 147, 107, 91, 166, 231, 201,
-            241, 180, 214, 112, 47, 123, 164, 186, 134, 54, 65, 22,
-            181, 201, 82, 236, 59, 52, 139, 172, 39, 41, 89, 123, 62,
-            102, 167, 82, 150, 250, 93, 96, 169, 135, 89, 245, 255,
-            164, 192, 169, 159, 25, 16, 139, 145, 76, 4, 144, 131,
-            148, 197, 204, 46, 23, 110, 193, 228, 127, 120, 242, 24,
-            54, 240, 181, 162, 98, 244, 249, 68, 134, 122, 126, 151,
-            38, 108, 116, 68, 150, 109, 38, 194, 21, 159, 140, 205,
-            183, 35, 97, 151, 186, 120, 145, 22, 235, 22, 210, 223,
-            187, 143, 162, 183, 93, 196, 104, 51, 96, 53, 234, 250,
-            184, 76, 237, 157, 37, 203, 226, 87, 222, 75, 240, 95, 218,
-            222, 64, 81, 165, 75, 201, 216, 190, 13, 116, 217, 69, 66,
-            47, 161, 68, 247, 74, 253, 157, 181, 162, 121, 53, 32, 91,
-            124, 230, 105, 224, 17, 187, 50, 61, 77, 103, 79, 71, 57,
-            163, 116, 234, 149, 27, 105, 24, 31, 159, 3, 128, 130, 42,
-            94, 125, 200, 142, 251, 148, 201, 17, 149, 232, 84, 50, 17,
-            18, 203, 186, 226, 164, 227, 202, 76, 65, 16, 163, 224,
-            132, 52, 31, 101, 129, 72, 171, 159, 42, 177, 253, 98, 86,
-            201, 95, 117, 62, 12, 205, 78, 36, 126, 196, 121, 89, 185,
-            37, 161, 66, 181, 117, 186, 71, 124, 132, 110, 120, 27,
-            246, 163, 18, 13, 90, 200, 127, 82, 209, 241, 170, 73, 247,
-            137, 96, 244, 254, 251, 119, 71, 156, 27, 107, 53, 33, 45,
-            22, 0, 144, 48, 32, 11, 116, 21, 125, 246, 217, 171, 158,
-            224, 142, 234, 141, 242, 168, 89, 154, 66, 227, 161, 182,
-            96, 1, 88, 78, 12, 7, 239, 30, 206, 31, 89, 111, 107, 42,
-            37, 241, 148, 232, 1, 8, 251, 117, 146, 183, 9, 48, 39, 94,
-            59, 70, 230, 26, 165, 97, 156, 140, 141, 31, 62, 10, 206,
-            55, 48, 207, 0, 197, 202, 197, 108, 133, 175, 80, 4, 16,
-            154, 223, 255, 4, 196, 188, 178, 240, 29, 13, 120, 5, 225,
-            202, 3, 35, 225, 158, 92, 152, 73, 205, 107, 157, 224, 245,
-            99, 194, 171, 156, 245, 247, 183, 165, 40, 62, 200, 110,
-            29, 151, 206, 100, 175, 88, 36, 242, 90, 4, 82, 73, 250,
-            140, 245, 217, 9, 153, 35, 242, 206, 78, 197, 121, 115, 15,
-            80, 128, 101, 191, 240, 91, 151, 249, 62, 62, 244, 18, 3,
-            17, 135, 222, 210, 93, 149, 123]),
-
-        192: new Uint8Array([126, 160, 166, 112, 227, 212, 106,
-            186, 175, 70, 24, 28, 86, 149, 31, 154, 156, 190, 244, 132, 44, 61, 149,
-            242, 105, 67, 17, 136, 7, 146, 153, 170, 200, 214, 142, 205, 170, 225,
-            85, 44, 241, 159, 255, 234, 10, 13, 37, 48, 255, 21, 141, 176, 60, 117,
-            73, 130, 247, 204, 144, 102, 167, 89, 203, 235, 229, 129, 122, 253, 124,
-            179, 115, 118, 163, 157, 67, 141, 122, 146, 209, 11, 112, 5, 230, 117,
-            123, 184, 243, 99, 83, 10, 31, 166, 96, 1, 121, 44, 10, 241, 24, 43,
-            184, 187, 25, 239, 246, 176, 108, 230, 127, 25, 42, 67, 202, 140, 179,
-            104, 159, 75, 103, 43, 248, 98, 166, 179, 67, 0, 163, 227, 84, 40, 129,
-            227, 198, 205, 7, 156, 16, 185, 24, 166, 59, 218, 197, 114, 74, 34, 126,
-            22, 226, 226, 85, 212, 69, 83, 163, 185, 68, 109, 182, 54, 209, 237, 96,
-            184, 32, 53, 127, 175, 13, 146, 141, 115, 164, 184, 98, 245, 174, 223,
-            46, 32, 167, 39, 103, 19, 210, 80, 131, 254, 103, 249, 247, 29, 120, 31,
-            105, 241, 103, 169, 249, 93, 153, 74, 56, 53, 239, 157, 132, 236, 169,
-            246, 242, 24, 113, 97, 128, 238, 152, 148, 31, 84, 8, 52, 105, 198, 116,
-            103, 132, 48, 199, 23, 90, 24, 29, 63, 41, 117, 191, 57, 31, 209, 128,
-            60, 119, 175, 84, 141, 177, 165, 169, 195, 35, 163, 105, 146, 157, 209,
-            93, 149, 105, 160, 93, 231, 78, 201, 92, 235, 200, 89, 37, 50, 181, 30,
-            213, 242, 59, 156, 219, 19, 158, 17, 224, 81, 108, 52, 87, 248, 101, 23,
-            39, 107, 67, 151, 103, 230, 126, 202, 184, 118, 226, 18, 29, 93, 37, 208,
-            40, 82, 113, 35, 157, 145, 152, 50, 253, 140, 47, 141, 192, 1, 148, 114,
-            40, 10, 112, 79, 227, 16, 105, 247, 31, 49, 102, 195, 75, 183, 172, 254,
-            188, 42, 89, 77, 38, 104, 1, 180, 106, 61, 71, 70, 35, 160, 103, 101,
-            244, 26, 226, 37, 159, 155, 4, 107, 222, 219, 136, 37, 24, 246, 44, 23,
-            44, 248, 132, 108, 59, 179, 99, 145, 132, 82, 53, 203, 111, 150, 55,
-            123, 51, 214, 165, 108, 124, 179, 131, 174, 139, 224, 114, 96, 218, 181,
-            243, 128, 198, 98, 115, 92, 95, 165, 23, 229, 108, 146, 14, 244, 162,
-            37, 85, 201, 33, 44, 92, 106, 112, 185, 16, 189, 42, 114, 109, 59, 124,
-            131, 16, 211, 31, 97, 29, 135, 61, 150, 75, 250, 207, 129, 38, 205, 187,
-            186, 55, 207, 232, 24, 48, 232, 49, 226, 16, 12, 27, 70, 31, 124, 128,
-            218, 100, 91, 200, 184, 78, 252, 100, 235, 62, 43, 69, 214, 163, 65, 14,
-            44, 180]),
-
-        256: new Uint8Array([8, 97, 235, 113, 70, 32, 135, 131,
-            210, 209, 124, 160, 255, 182, 9, 29, 125, 193, 27, 240, 129, 46, 2, 137,
-            169, 142, 61, 7, 145, 54, 170, 207, 159, 111, 39, 95, 87, 63, 162, 27,
-            6, 18, 219, 215, 116, 34, 90, 57, 114, 244, 102, 145, 67, 6, 51, 152,
-            247, 165, 242, 116, 100, 219, 177, 72, 177, 17, 110, 67, 93, 219, 100,
-            217, 20, 207, 89, 154, 45, 37, 105, 83, 67, 162, 140, 235, 129, 40, 177,
-            202, 174, 54, 148, 55, 156, 193, 232, 249, 134, 163, 195, 51, 114, 116,
-            65, 38, 73, 99, 96, 249, 224, 69, 17, 119, 186, 188, 181, 43, 78, 156,
-            76, 138, 226, 63, 5, 248, 9, 94, 26, 1, 2, 235, 39, 174, 74, 47, 183,
-            22, 40, 47, 47, 13, 100, 119, 12, 67, 178, 184, 56, 167, 238, 143, 13,
-            44, 208, 185, 151, 108, 6, 17, 52, 122, 182, 210, 207, 42, 219, 37, 74,
-            94, 126, 36, 249, 37, 32, 4, 218, 44, 238, 69, 56, 219, 31, 77, 173, 46,
-            187, 103, 36, 112, 213, 252, 40, 87, 164, 240, 163, 159, 32, 129, 125,
-            178, 108, 47, 28, 31, 36, 42, 115, 36, 14, 145, 195, 156, 191, 46, 163,
-            249, 181, 31, 90, 73, 30, 72, 57, 223, 63, 60, 79, 140, 14, 117, 31,
-            145, 222, 156, 121, 237, 32, 145, 143, 96, 12, 254, 35, 21, 21, 59, 168,
-            171, 154, 217, 0, 59, 202, 175, 103, 214, 192, 175, 26, 18, 43, 54, 176,
-            222, 75, 22, 7, 122, 253, 224, 145, 61, 42, 208, 73, 237, 84, 141, 209,
-            213, 228, 46, 244, 59, 9, 68, 6, 35, 88, 189, 10, 62, 9, 85, 28, 44, 82,
-            19, 153, 160, 178, 240, 56, 160, 244, 201, 173, 77, 61, 20, 227, 30,
-            180, 167, 16, 105, 185, 193, 95, 207, 41, 23, 134, 78, 198, 182, 93, 24,
-            89, 247, 231, 75, 233, 194, 137, 242, 114, 194, 190, 130, 138, 238, 94,
-            137, 193, 194, 115, 137, 190, 207, 169, 83, 155, 14, 210, 160, 129, 195,
-            161, 234, 221, 255, 114, 67, 98, 12, 93, 41, 65, 183, 244, 103, 247,
-            101, 82, 246, 125, 87, 125, 78, 21, 186, 102, 205, 20, 40, 32, 201, 174,
-            15, 52, 240, 217, 180, 162, 108, 6, 211, 41, 18, 135, 232, 184, 18, 188,
-            169, 157, 190, 76, 166, 75, 176, 127, 39, 251, 22, 203, 153, 80, 49,
-            241, 124, 137, 151, 123, 204, 43, 159, 190, 177, 196, 18, 117, 169, 46,
-            152, 251, 45, 25, 164, 27, 145, 214, 228, 55, 15, 2, 131, 216, 80, 255,
-            204, 175, 100, 59, 145, 15, 103, 40, 33, 45, 255, 200, 254, 172, 138,
-            20, 58, 87, 182, 192, 148, 219, 41, 88, 230, 229, 70, 249])
-    };
+    const {
+      plaintext,
+      keyBytes,
+      iv,
+      additionalData,
+      tag,
+      tag_with_empty_ad,
+      ciphertext,
+    } = getFixtures();
 
     var keyLengths = [128, 192, 256];
     var tagLengths = [32, 64, 96, 104, 112, 120, 128];
@@ -220,7 +34,7 @@ function getTestVectors() {
             result.set(ciphertext[keyLength], 0);
             result.set(tag[keyLength].slice(0, byteCount), ciphertext[keyLength].byteLength);
             passing.push({
-                    name: "AES-GCM " + keyLength.toString() + "-bit key, " + tagLength.toString() + "-bit tag",
+                    name: "AES-GCM " + keyLength.toString() + "-bit key, " + tagLength.toString() + "-bit tag, " + (iv.byteLength << 3).toString() + "-bit iv",
                     keyBuffer: keyBytes[keyLength],
                     key: null,
                     algorithm: {name: "AES-GCM", iv: iv, additionalData: additionalData, tagLength: tagLength},
@@ -232,7 +46,7 @@ function getTestVectors() {
             noadresult.set(ciphertext[keyLength], 0);
             noadresult.set(tag_with_empty_ad[keyLength].slice(0, byteCount), ciphertext[keyLength].byteLength);
             passing.push({
-                    name: "AES-GCM " + keyLength.toString() + "-bit key, no additional data, " + tagLength.toString() + "-bit tag",
+                    name: "AES-GCM " + keyLength.toString() + "-bit key, no additional data, " + tagLength.toString() + "-bit tag, " + (iv.byteLength << 3).toString() + "-bit iv",
                     keyBuffer: keyBytes[keyLength],
                     key: null,
                     algorithm: {name: "AES-GCM", iv: iv, tagLength: tagLength},
@@ -248,7 +62,7 @@ function getTestVectors() {
         // First, make some tests for bad tag lengths
         [24, 48, 72, 95, 129].forEach(function(badTagLength) {
             failing.push({
-                name: "AES-GCM " + keyLength.toString() + "-bit key, illegal tag length " + badTagLength.toString() + "-bits",
+                name: "AES-GCM " + keyLength.toString() + "-bit key, " + (iv.byteLength << 3).toString() + "-bit iv, " + "illegal tag length " + badTagLength.toString() + "-bits",
                 keyBuffer: keyBytes[keyLength],
                 key: null,
                 algorithm: {name: "AES-GCM", iv: iv, additionalData: additionalData, tagLength: badTagLength},
diff --git a/tests/wpt/web-platform-tests/WebCryptoAPI/sign_verify/ecdsa_vectors.js b/tests/wpt/web-platform-tests/WebCryptoAPI/sign_verify/ecdsa_vectors.js
index 2d1fb6d5c9e..aa9b81ba8a4 100644
--- a/tests/wpt/web-platform-tests/WebCryptoAPI/sign_verify/ecdsa_vectors.js
+++ b/tests/wpt/web-platform-tests/WebCryptoAPI/sign_verify/ecdsa_vectors.js
@@ -85,53 +85,55 @@ function getTestVectors() {
 // Additional test vectors, using the same format as getTestVectors, but the
 // signatures are invalid.
 function getInvalidTestVectors() {
-    var vectors = [
+    var vectors = [];
+    for (const validVector of getTestVectors()) {
         {
-            name: "The signature was truncated by 1 byte",
-            publicKeyBuffer: new Uint8Array([48, 89, 48, 19, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 8, 42, 134, 72, 206, 61, 3, 1, 7, 3, 66, 0, 4, 156, 176, 207, 105, 48, 61, 175, 199, 97, 212, 228, 104, 123, 78, 207, 3, 158, 109, 52, 171, 150, 74, 248, 8, 16, 216, 213, 88, 164, 168, 214, 247, 45, 81, 35, 58, 23, 136, 146, 10, 134, 238, 8, 161, 150, 44, 121, 239, 163, 23, 251, 120, 121, 226, 151, 218, 210, 20, 109, 185, 149, 250, 28, 120]),
-            publicKeyFormat: "spki",
-            publicKey: null,
-            algorithmName: "ECDSA",
-            namedCurve: "P-256",
-            hashName: "SHA-512",
-            plaintext: new Uint8Array([110, 41, 50, 21, 51, 1, 164, 238, 246, 128, 230, 66, 137, 41, 173, 174, 152, 140, 16, 141, 102, 138, 49, 255, 85, 208, 72, 153, 71, 215, 95, 248, 26, 70, 191, 137, 232, 77, 100, 1, 240, 35, 190, 110, 135, 104, 143, 188, 215, 132, 215, 133, 202, 132, 103, 53, 82, 74, 203, 82, 208, 4, 82, 200, 64, 64, 164, 121, 231, 204, 51, 9, 54, 68, 29, 147, 187, 231, 34, 169, 67, 42, 110, 29, 177, 18, 181, 201, 64, 59, 16, 39, 44, 177, 52, 127, 214, 25, 212, 99, 247, 169, 210, 35, 173, 118, 253, 224, 109, 138, 104, 131, 80, 15, 184, 67, 35, 90, 191, 249, 142, 36, 27, 223, 181, 83, 140, 62]),
-            signature: new Uint8Array([75, 159, 145, 228, 40, 82, 135, 38, 26, 29, 28, 146, 60, 246, 25, 205, 82, 193, 117, 207, 231, 241, 190, 96, 165, 37, 140, 97, 3, 72, 186, 61, 40, 196, 95, 144, 29, 113, 196, 27, 41, 134, 56, 236, 13, 106, 133, 215, 252, 176, 195, 59, 191, 236, 90, 156, 129, 8, 70, 182, 57, 40, 154]),
-        },
+            const vector = structuredClone(validVector);
+            vector.name = `${vector.name} - The signature was truncated by 1 byte`;
+            vector.signature = vector.signature.subarray(0, vector.signature.byteLength - 1);
+            vectors.push(vector);
+        }
+
+        // The signature was made with a different algorithm
+        for (const hashName of ["SHA-1", "SHA-256", "SHA-384", "SHA-512"]) {
+            if (validVector.hashName === hashName) continue;
+            const vector = structuredClone(validVector);
+            vector.name = `${vector.name} - The signature was made using ${vector.hashName}, however verification is being done using ${hashName}`;
+            vector.hashName = hashName;
+            vectors.push(vector);
+        }
+
         {
-            name: "The signature was made using SHA-512, however verification is being done using SHA-1.",
-            publicKeyBuffer: new Uint8Array([48, 89, 48, 19, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 8, 42, 134, 72, 206, 61, 3, 1, 7, 3, 66, 0, 4, 156, 176, 207, 105, 48, 61, 175, 199, 97, 212, 228, 104, 123, 78, 207, 3, 158, 109, 52, 171, 150, 74, 248, 8, 16, 216, 213, 88, 164, 168, 214, 247, 45, 81, 35, 58, 23, 136, 146, 10, 134, 238, 8, 161, 150, 44, 121, 239, 163, 23, 251, 120, 121, 226, 151, 218, 210, 20, 109, 185, 149, 250, 28, 120]),
-            publicKeyFormat: "spki",
-            publicKey: null,
-            algorithmName: "ECDSA",
-            namedCurve: "P-256",
-            hashName: "SHA-1",
-            plaintext: new Uint8Array([110, 41, 50, 21, 51, 1, 164, 238, 246, 128, 230, 66, 137, 41, 173, 174, 152, 140, 16, 141, 102, 138, 49, 255, 85, 208, 72, 153, 71, 215, 95, 248, 26, 70, 191, 137, 232, 77, 100, 1, 240, 35, 190, 110, 135, 104, 143, 188, 215, 132, 215, 133, 202, 132, 103, 53, 82, 74, 203, 82, 208, 4, 82, 200, 64, 64, 164, 121, 231, 204, 51, 9, 54, 68, 29, 147, 187, 231, 34, 169, 67, 42, 110, 29, 177, 18, 181, 201, 64, 59, 16, 39, 44, 177, 52, 127, 214, 25, 212, 99, 247, 169, 210, 35, 173, 118, 253, 224, 109, 138, 104, 131, 80, 15, 184, 67, 35, 90, 191, 249, 142, 36, 27, 223, 181, 83, 140, 62]),
-            signature: new Uint8Array([75, 159, 145, 228, 40, 82, 135, 38, 26, 29, 28, 146, 60, 246, 25, 205, 82, 193, 117, 207, 231, 241, 190, 96, 165, 37, 140, 97, 3, 72, 186, 61, 40, 196, 95, 144, 29, 113, 196, 27, 41, 134, 56, 236, 13, 106, 133, 215, 252, 176, 195, 59, 191, 236, 90, 156, 129, 8, 70, 182, 57, 40, 154, 132]),
-        },
+            // Excess padding
+            const vector = structuredClone(validVector);
+            vector.name = `${vector.name} - Signature has excess padding`;
+
+            const r = vector.signature.subarray(0, vector.signature.byteLength / 2);
+            const s = vector.signature.subarray(vector.signature.byteLength);
+            vector.signature = new Uint8Array([
+                0, ...r,
+                0, ...s,
+            ]);
+
+            vectors.push(vector);
+        }
+
         {
-            name: "Excess padding",
-            publicKeyBuffer: new Uint8Array([48, 118, 48, 16, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 5, 43, 129, 4, 0, 34, 3, 98, 0, 4, 8, 116, 162, 224, 184, 255, 68, 143, 14, 84, 50, 30, 39, 244, 241, 230, 77, 6, 76, 222, 183, 210, 111, 69, 140, 50, 233, 48, 18, 15, 78, 87, 220, 133, 194, 105, 63, 151, 126, 237, 74, 142, 204, 141, 185, 129, 180, 217, 31, 105, 68, 109, 244, 244, 198, 245, 222, 25, 0, 63, 69, 248, 145, 208, 235, 205, 47, 255, 219, 92, 129, 192, 64, 232, 214, 153, 76, 67, 199, 254, 237, 185, 138, 74, 49, 237, 251, 53, 232, 154, 48, 1, 60, 59, 146, 103]),
-            publicKeyFormat: "spki",
-            publicKey: null,
-            algorithmName: "ECDSA",
-            namedCurve: "P-384",
-            hashName: "SHA-1",
-            plaintext: new Uint8Array([63, 7, 131, 165, 142, 102, 243, 210, 192, 204, 251, 95, 172, 63, 9, 219, 111, 134, 9, 208, 89, 43, 199, 127, 223, 254, 217, 207, 14, 19, 125, 38, 168, 103, 5, 118, 101, 243, 173, 129, 190, 235, 187, 219, 114, 61, 90, 71, 197, 128, 130, 143, 16, 247, 52, 122, 184, 169, 194, 77, 25, 95, 115, 109, 250, 230, 234, 227, 125, 136, 254, 59, 71, 53, 231, 198, 105, 168, 10, 193, 145, 62, 92, 36, 200, 193, 213, 205, 177, 95, 153, 79, 62, 194, 241, 199, 116, 117, 46, 20, 245, 150, 179, 140, 47, 191, 3, 118, 22, 214, 8, 36, 77, 61, 167, 212, 186, 223, 53, 19, 48, 249, 71, 224, 76, 195, 80, 231]),
-            // Each of r and s in this input is padded up to one extra byte.
-            signature: new Uint8Array([0, 141, 157, 62, 61, 11, 43, 40, 113, 234, 47, 3, 242, 123, 168, 105, 159, 33, 75, 232, 216, 117, 192, 215, 112, 176, 255, 241, 196, 206, 52, 31, 12, 131, 74, 193, 31, 158, 193, 43, 253, 184, 50, 11, 23, 36, 200, 194, 32, 0, 98, 21, 13, 251, 168, 230, 92, 12, 123, 231, 239, 129, 200, 114, 65, 210, 195, 122, 131, 194, 126, 179, 28, 204, 43, 60, 57, 87, 103, 10, 116, 76, 129, 190, 109, 116, 19, 64, 181, 24, 156, 192, 197, 71, 223, 129, 176, 210]),
-        },
+            // Empty signature
+            const vector = structuredClone(validVector);
+            vector.name = `${vector.name} - The signature is empty`;
+            vector.signature = new Uint8Array();
+            vectors.push(vector);
+        }
+
         {
-            name: "Empty signature",
-            publicKeyBuffer: new Uint8Array([48, 118, 48, 16, 6, 7, 42, 134, 72, 206, 61, 2, 1, 6, 5, 43, 129, 4, 0, 34, 3, 98, 0, 4, 8, 116, 162, 224, 184, 255, 68, 143, 14, 84, 50, 30, 39, 244, 241, 230, 77, 6, 76, 222, 183, 210, 111, 69, 140, 50, 233, 48, 18, 15, 78, 87, 220, 133, 194, 105, 63, 151, 126, 237, 74, 142, 204, 141, 185, 129, 180, 217, 31, 105, 68, 109, 244, 244, 198, 245, 222, 25, 0, 63, 69, 248, 145, 208, 235, 205, 47, 255, 219, 92, 129, 192, 64, 232, 214, 153, 76, 67, 199, 254, 237, 185, 138, 74, 49, 237, 251, 53, 232, 154, 48, 1, 60, 59, 146, 103]),
-            publicKeyFormat: "spki",
-            publicKey: null,
-            algorithmName: "ECDSA",
-            namedCurve: "P-384",
-            hashName: "SHA-1",
-            plaintext: new Uint8Array([63, 7, 131, 165, 142, 102, 243, 210, 192, 204, 251, 95, 172, 63, 9, 219, 111, 134, 9, 208, 89, 43, 199, 127, 223, 254, 217, 207, 14, 19, 125, 38, 168, 103, 5, 118, 101, 243, 173, 129, 190, 235, 187, 219, 114, 61, 90, 71, 197, 128, 130, 143, 16, 247, 52, 122, 184, 169, 194, 77, 25, 95, 115, 109, 250, 230, 234, 227, 125, 136, 254, 59, 71, 53, 231, 198, 105, 168, 10, 193, 145, 62, 92, 36, 200, 193, 213, 205, 177, 95, 153, 79, 62, 194, 241, 199, 116, 117, 46, 20, 245, 150, 179, 140, 47, 191, 3, 118, 22, 214, 8, 36, 77, 61, 167, 212, 186, 223, 53, 19, 48, 249, 71, 224, 76, 195, 80, 231]),
-            signature: new Uint8Array([]),
-        },
-    ];
+            // Zeroed signature
+            const vector = structuredClone(validVector);
+            vector.name = `${vector.name} - The signature is all zeroes`;
+            vector.signature = new Uint8Array(vector.signature.byteLength);
+            vectors.push(vector);
+        }
+    }
 
     return vectors;
 }
diff --git a/tests/wpt/web-platform-tests/WebCryptoAPI/wrapKey_unwrapKey/wrapKey_unwrapKey.https.any.js b/tests/wpt/web-platform-tests/WebCryptoAPI/wrapKey_unwrapKey/wrapKey_unwrapKey.https.any.js
index 95102495fe3..edb67d9e30f 100644
--- a/tests/wpt/web-platform-tests/WebCryptoAPI/wrapKey_unwrapKey/wrapKey_unwrapKey.https.any.js
+++ b/tests/wpt/web-platform-tests/WebCryptoAPI/wrapKey_unwrapKey/wrapKey_unwrapKey.https.any.js
@@ -1,5 +1,6 @@
 // META: title=WebCryptoAPI: wrapKey() and unwrapKey()
 // META: timeout=long
+// META: script=../util/helpers.js
 
 // Tests for wrapKey and unwrapKey round tripping
 
@@ -19,7 +20,7 @@
                 promises.push(testWrapping(wrapper, key));
             })
         });
-        return Promise.all(promises);
+        return Promise.allSettled(promises);
     });
     }, "setup");
 
@@ -48,7 +49,7 @@
             {
                 name: "AES-GCM",
                 generateParameters: {name: "AES-GCM", length: 128},
-                wrapParameters: {name: "AES-GCM", iv: new Uint8Array(16), additionalData: new Uint8Array(16), tagLength: 64}
+                wrapParameters: {name: "AES-GCM", iv: new Uint8Array(16), additionalData: new Uint8Array(16), tagLength: 128}
             },
             {
                 name: "AES-KW",
@@ -141,7 +142,7 @@
                     .then(function(wrappedResult) {
                         return subtle.unwrapKey(fmt, wrappedResult, wrapper.unwrappingKey, wrapper.parameters.wrapParameters, toWrap.algorithm, true, toWrap.usages);
                     }).then(function(unwrappedResult) {
-                        assert_true(unwrappedResult.extractable, "Unwrapped result is extractable");
+                        assert_goodCryptoKey(unwrappedResult, toWrap.algorithm, true, toWrap.usages, toWrap.key.type);
                         return subtle.exportKey(fmt, unwrappedResult)
                     }).then(function(roundTripExport) {
                         assert_true(equalExport(originalExport, roundTripExport), "Post-wrap export matches original export");
@@ -161,7 +162,7 @@
                         .then(function(wrappedResult) {
                             return subtle.unwrapKey(fmt, wrappedResult, wrapper.unwrappingKey, wrapper.parameters.wrapParameters, toWrap.algorithm, false, toWrap.usages);
                         }).then(function(unwrappedResult){
-                            assert_false(unwrappedResult.extractable, "Unwrapped result is non-extractable");
+                            assert_goodCryptoKey(unwrappedResult, toWrap.algorithm, false, toWrap.usages, toWrap.key.type);
                             return equalKeys(toWrap.key, unwrappedResult);
                         }).then(function(result){
                             assert_true(result, "Unwrapped key matches original");
diff --git a/tests/wpt/web-platform-tests/accessibility/crashtests/aria-owns-presentation.html b/tests/wpt/web-platform-tests/accessibility/crashtests/aria-owns-presentation.html
deleted file mode 100644
index 138625a1534..00000000000
--- a/tests/wpt/web-platform-tests/accessibility/crashtests/aria-owns-presentation.html
+++ /dev/null
@@ -1,3 +0,0 @@
-<!DOCTYPE html>
-<div id="parent" aria-owns="owned"></div>
-<div id="owned" role="none"></div>
diff --git a/tests/wpt/web-platform-tests/client-hints/accept-ch-change.https.html b/tests/wpt/web-platform-tests/client-hints/accept-ch-change.https.html
index b0a4da61ddd..826aca85a4e 100644
--- a/tests/wpt/web-platform-tests/client-hints/accept-ch-change.https.html
+++ b/tests/wpt/web-platform-tests/client-hints/accept-ch-change.https.html
@@ -60,6 +60,14 @@ promise_test(async () => {
   // settings have been saved
   await open_and_expect_headers("resources/expect-no-client-hints-headers.html");
 
+  // Check that multiple headers will fill the cache.
+  await open_and_add_load_event("resources/accept-ch-split.html");
+  await open_and_expect_headers("resources/expect-client-hints-headers.html");
+
+  // Check that a mix of empty and full headers drops the cache.
+  await open_and_add_load_event("resources/accept-ch-mixed.html");
+  await open_and_expect_headers("resources/expect-no-client-hints-headers.html");
+
 }, "Accept-CH changes based on header");
 
 </script>
diff --git a/tests/wpt/web-platform-tests/client-hints/critical-ch/iframe.https.window.js b/tests/wpt/web-platform-tests/client-hints/critical-ch/iframe.https.window.js
index f4dd295208f..bbb9623752e 100644
--- a/tests/wpt/web-platform-tests/client-hints/critical-ch/iframe.https.window.js
+++ b/tests/wpt/web-platform-tests/client-hints/critical-ch/iframe.https.window.js
@@ -6,3 +6,10 @@ async_test((t) => {
   document.body.appendChild(iframe);
   iframe.contentWindow.addEventListener('message', message_listener(t, "FAIL"));
 }, "Critical-CH iframe");
+
+async_test((t) => {
+  var iframe = document.createElement("iframe");
+  iframe.src = ECHO_URL+"?multiple=true";
+  document.body.appendChild(iframe);
+  iframe.contentWindow.addEventListener('message', message_listener(t, "FAIL"));
+}, "Critical-CH w/ multiple headers and iframe");
diff --git a/tests/wpt/web-platform-tests/client-hints/critical-ch/mis-matched-count.https.window.js b/tests/wpt/web-platform-tests/client-hints/critical-ch/mis-matched-count.https.window.js
index 54bd6678979..23d297837e6 100644
--- a/tests/wpt/web-platform-tests/client-hints/critical-ch/mis-matched-count.https.window.js
+++ b/tests/wpt/web-platform-tests/client-hints/critical-ch/mis-matched-count.https.window.js
@@ -2,3 +2,4 @@
 // META: script=/common/utils.js
 
 async_test(make_message_test(ECHO_URL+"?mismatch=true&token="+token(), "1"), "Critical-CH no restart on mismatched hints")
+async_test(make_message_test(ECHO_URL+"?multiple=true&mismatch=true&token="+token(), "1"), "Critical-CH w/ multiple headers and no restart on mismatched hints")
diff --git a/tests/wpt/web-platform-tests/client-hints/critical-ch/mis-matched.https.window.js b/tests/wpt/web-platform-tests/client-hints/critical-ch/mis-matched.https.window.js
index 9476640b351..10f9a30b6d2 100644
--- a/tests/wpt/web-platform-tests/client-hints/critical-ch/mis-matched.https.window.js
+++ b/tests/wpt/web-platform-tests/client-hints/critical-ch/mis-matched.https.window.js
@@ -1,3 +1,4 @@
 // META: script=resources/util.js
 
 async_test(make_message_test(ECHO_URL+"?mismatch=true", "FAIL"), "Critical-CH Mis-matched hints")
+async_test(make_message_test(ECHO_URL+"?multiple=true&mismatch=true", "FAIL"), "Critical-CH w/ multiple headers and Mis-matched hints")
diff --git a/tests/wpt/web-platform-tests/client-hints/critical-ch/navigation.multiple.https.window.js b/tests/wpt/web-platform-tests/client-hints/critical-ch/navigation.multiple.https.window.js
new file mode 100644
index 00000000000..ff9cc210feb
--- /dev/null
+++ b/tests/wpt/web-platform-tests/client-hints/critical-ch/navigation.multiple.https.window.js
@@ -0,0 +1,3 @@
+// META: script=resources/util.js
+
+async_test(make_message_test(ECHO_URL+"?multiple=true", "PASS"), "Critical-CH w/ multiple headers and navigation")
diff --git a/tests/wpt/web-platform-tests/client-hints/critical-ch/non-secure.http.window.js b/tests/wpt/web-platform-tests/client-hints/critical-ch/non-secure.http.window.js
index cdd79243982..b634f98e55c 100644
--- a/tests/wpt/web-platform-tests/client-hints/critical-ch/non-secure.http.window.js
+++ b/tests/wpt/web-platform-tests/client-hints/critical-ch/non-secure.http.window.js
@@ -1,3 +1,4 @@
 // META: script=resources/util.js
 
 async_test(make_message_test(ECHO_URL, "FAIL"), "Critical-CH navigation non-secure")
+async_test(make_message_test(ECHO_URL+"?multiple=true", "FAIL"), "Critical-CH w/ multiple headers and navigation non-secure")
diff --git a/tests/wpt/web-platform-tests/client-hints/critical-ch/request-count.multiple.https.window.js b/tests/wpt/web-platform-tests/client-hints/critical-ch/request-count.multiple.https.window.js
new file mode 100644
index 00000000000..602803b5d68
--- /dev/null
+++ b/tests/wpt/web-platform-tests/client-hints/critical-ch/request-count.multiple.https.window.js
@@ -0,0 +1,4 @@
+// META: script=resources/util.js
+// META: script=/common/utils.js
+
+async_test(make_message_test(ECHO_URL+"?multiple=true&token="+token(), "2"), "Critical-CH w/ multiple headers and navigation restart")
diff --git a/tests/wpt/web-platform-tests/client-hints/critical-ch/resources/echo-critical-hint.py b/tests/wpt/web-platform-tests/client-hints/critical-ch/resources/echo-critical-hint.py
index e4e77ad2a9a..0913dbb19db 100644
--- a/tests/wpt/web-platform-tests/client-hints/critical-ch/resources/echo-critical-hint.py
+++ b/tests/wpt/web-platform-tests/client-hints/critical-ch/resources/echo-critical-hint.py
@@ -11,13 +11,22 @@ def main(request, response):
     response.headers.append(b"Access-Control-Allow-Headers", b"*")
     response.headers.append(b"Access-Control-Expose-Headers", b"*")
 
-    response.headers.append(b"Accept-CH", b"sec-ch-device-memory,device-memory")
+    accept = b"sec-ch-device-memory,device-memory"
+    if(request.GET.first(b"multiple", None) is not None):
+      for accept_part in accept.split(b","):
+        response.headers.append(b"Accept-CH", accept_part)
+    else:
+      response.headers.append(b"Accept-CH", accept)
 
     critical = b"sec-ch-device-memory,device-memory"
     if(request.GET.first(b"mismatch", None) is not None):
       critical = b"sec-ch-viewport-width,viewport-width"
 
-    response.headers.append(b"Critical-CH", critical)
+    if(request.GET.first(b"multiple", None) is not None):
+      for critical_part in critical.split(b","):
+        response.headers.append(b"Critical-CH", critical_part)
+    else:
+      response.headers.append(b"Critical-CH", critical)
 
     response.headers.append(b"Cache-Control", b"no-store")
 
diff --git a/tests/wpt/web-platform-tests/client-hints/critical-ch/subresource.https.window.js b/tests/wpt/web-platform-tests/client-hints/critical-ch/subresource.https.window.js
index f8112b628d0..81dfc303c62 100644
--- a/tests/wpt/web-platform-tests/client-hints/critical-ch/subresource.https.window.js
+++ b/tests/wpt/web-platform-tests/client-hints/critical-ch/subresource.https.window.js
@@ -2,9 +2,17 @@
 // META: script=/common/utils.js
 
 promise_test(() =>
-  fetch("resources/echo-critical-hint.py")
+  fetch(ECHO_URL)
       .then((r) => r.text())
       .then((r) => {
         assert_true(r.includes("FAIL"));
       })
 , "Critical-CH subresource fetch");
+
+promise_test(() =>
+  fetch(ECHO_URL+"?multiple=true")
+      .then((r) => r.text())
+      .then((r) => {
+        assert_true(r.includes("FAIL"));
+      })
+, "Critical-CH w/ multiple headers and subresource fetch");
diff --git a/tests/wpt/web-platform-tests/client-hints/critical-ch/unsafe-method.https.window.js b/tests/wpt/web-platform-tests/client-hints/critical-ch/unsafe-method.https.window.js
index 0eca0eb8e9a..37bbcb3315e 100644
--- a/tests/wpt/web-platform-tests/client-hints/critical-ch/unsafe-method.https.window.js
+++ b/tests/wpt/web-platform-tests/client-hints/critical-ch/unsafe-method.https.window.js
@@ -21,3 +21,27 @@ async_test((t) => {
 
   form.submit();
 }, "Critical-CH unsafe method")
+
+async_test((t) => {
+  // This test requires a navigation with a non-safe (i.e. non-GET) HTTP
+  // response, which the Critical-CH spec says to ignore. The most
+  // "straight-forward" way to do this in JS is by making a form with an
+  // unsafe method (e.g. POST) method and submit it.
+
+  // Build the form DOM element
+  var form = document.createElement("form");
+  form.setAttribute("method", "post");
+  form.setAttribute("action", "resources/echo-critical-hint.py?multiple=true");
+  form.setAttribute("target", "popup"); //don't navigate away from the page running the test...
+  document.body.appendChild(form);
+
+  var popup_window = window.open("/common/blank.html", "popup");
+  assert_not_equals(popup_window, null, "Popup windows not allowed?");
+
+  popup_window.addEventListener('message', (e) => {
+    t.step(()=>{assert_equals(e.data, "FAIL")});
+    t.done();
+  });
+
+  form.submit();
+}, "Critical-CH w/ multiple headers and unsafe method")
diff --git a/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-mixed.html b/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-mixed.html
new file mode 100644
index 00000000000..bf604dffeef
--- /dev/null
+++ b/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-mixed.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+<body>
+
+<!-- An empty webpage whose response headers include empty and full
+Accept-CH headers. Fetching this webpage should cause
+the hint cache to be dropped.-->
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-mixed.html.headers b/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-mixed.html.headers
new file mode 100644
index 00000000000..39d4e1935da
--- /dev/null
+++ b/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-mixed.html.headers
@@ -0,0 +1,5 @@
+Accept-CH:
+Accept-CH: sec-ch-device-memory
+Accept-CH: device-memory
+Accept-CH:
+Access-Control-Allow-Origin: *
diff --git a/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-split.html b/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-split.html
new file mode 100644
index 00000000000..5038b940139
--- /dev/null
+++ b/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-split.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+<body>
+
+<!-- An empty webpage whose response headers include only
+non-empty Accept-CH headers. Fetching this webpage should cause
+hints to be added to the cache.-->
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-split.html.headers b/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-split.html.headers
new file mode 100644
index 00000000000..261e1e8ee6d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/client-hints/resources/accept-ch-split.html.headers
@@ -0,0 +1,3 @@
+Accept-CH: sec-ch-device-memory
+Accept-CH: device-memory
+Access-Control-Allow-Origin: *
diff --git a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_alert.html b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_alert-manual.html
index 1317cc658f7..1317cc658f7 100644
--- a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_alert.html
+++ b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_alert-manual.html
diff --git a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_banner.html b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_banner-manual.html
index e1bf9cc7f45..e1bf9cc7f45 100644
--- a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_banner.html
+++ b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_banner-manual.html
diff --git a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_dialog.html b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_dialog-manual.html
index c7feeddf2bb..c7feeddf2bb 100644
--- a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_dialog.html
+++ b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_dialog-manual.html
diff --git a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_feed.html b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_feed-manual.html
index e81f3e49494..e81f3e49494 100644
--- a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_feed.html
+++ b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_feed-manual.html
diff --git a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_form.html b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_form-manual.html
index 6b533da6f72..6b533da6f72 100644
--- a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_form.html
+++ b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_form-manual.html
diff --git a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_group.html b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_group-manual.html
index 8deb17c2b24..8deb17c2b24 100644
--- a/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_group.html
+++ b/tests/wpt/web-platform-tests/core-aam/aria-expanded_not_supported_on_group-manual.html
diff --git a/tests/wpt/web-platform-tests/core-aam/generic_roledescription_prohibited-manual.html b/tests/wpt/web-platform-tests/core-aam/generic_roledescription_prohibited-manual.html
index 7c54dff1549..07f32ccc5cd 100644
--- a/tests/wpt/web-platform-tests/core-aam/generic_roledescription_prohibited-manual.html
+++ b/tests/wpt/web-platform-tests/core-aam/generic_roledescription_prohibited-manual.html
@@ -61,7 +61,7 @@
   </head>
   <body>
   <p>This test examines the ARIA properties for generic with a roledescription.</p>
-  <p role="generic" id="test" aria-roledescription="foo">content</p>
+  <div role="generic" id="test" aria-roledescription="foo">content</div>
   <div id="manualMode"></div>
   <div id="log"></div>
   <div id="ATTAmessages"></div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/background-clip-padding-box-with-border-radius.html b/tests/wpt/web-platform-tests/css/css-backgrounds/background-clip-padding-box-with-border-radius.html
index ee98dababbc..8595caec7bb 100644
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/background-clip-padding-box-with-border-radius.html
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/background-clip-padding-box-with-border-radius.html
@@ -7,6 +7,7 @@
 <link rel="author" title="Lea Verou" href="http://lea.verou.me" />
 <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-clip" />
 <link rel="help" href="http://www.w3.org/TR/css3-background/#corner-shaping" />
+<link rel="match" href="reference/background-clip-padding-box-with-border-radius-ref.html" />
 <meta name="assert" content="Backgrounds clipped to the padding box should follow the padding box curve, which should be equal to the outer border radius minus the corresponding border thickness." />
 <style>
 div {
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/reference/background-clip-padding-box-with-border-radius-ref.html b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/background-clip-padding-box-with-border-radius-ref.html
new file mode 100644
index 00000000000..545b80d3516
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/background-clip-padding-box-with-border-radius-ref.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reference File</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div
+    {
+      background-color: green;
+      border-radius: 30px;
+      height: 144px;
+      margin-left: 18px;
+      margin-top: 24px;
+      width: 144px;
+    }
+
+  div + div
+    {
+      margin-top: 6px;
+    }
+  </style>
+
+  <p>Test passes if there are two filled green rounded squares and <strong>no red</strong>.
+
+  <div></div>
+
+  <div></div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/simple-bg-color-ref.html b/tests/wpt/web-platform-tests/css/css-backgrounds/simple-bg-color-ref.html
deleted file mode 100644
index d8003b58e3a..00000000000
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/simple-bg-color-ref.html
+++ /dev/null
@@ -1,12 +0,0 @@
-<!DOCTYPE html>
-<body>
-  <canvas id="canvas" width="200" height="400"></canvas>
-</body>
-<script>
-  var canvas = document.getElementById('canvas');
-  var ctx = canvas.getContext('2d');
-  ctx.fillStyle = 'green';
-  ctx.fillRect(0, 0, 100, 150);
-  ctx.fillStyle = 'red';
-  ctx.fillRect(0, 150, 200, 250);
-</script>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/simple-bg-color.html b/tests/wpt/web-platform-tests/css/css-backgrounds/simple-bg-color.html
deleted file mode 100644
index 07bea44d219..00000000000
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/simple-bg-color.html
+++ /dev/null
@@ -1,19 +0,0 @@
-<!DOCTYPE html>
-<link rel="help" href="https://drafts.csswg.org/css-backgrounds-3/#background-color">
-<link rel="match" href="simple-bg-color-ref.html">
-<style>
-.box1 {
-  width: 100px;
-  height: 150px;
-  background-color: green;
-}
-.box2 {
-  width: 200px;
-  height: 250px;
-  background-color: red;
-}
-</style>
-<body>
-  <div class='box1'></div>
-  <div class='box2'></div>
-</body>
diff --git a/tests/wpt/web-platform-tests/css/css-break/flexbox/flex-item-content-overflow-003.html b/tests/wpt/web-platform-tests/css/css-break/flexbox/flex-item-content-overflow-003.html
new file mode 100644
index 00000000000..d3a5b976ccd
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/flexbox/flex-item-content-overflow-003.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1417976">
+<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div style="columns:2; column-fill:auto;">
+  <div style="display:flex;">
+    <div style="width:100px; max-height:50px;">
+      <div style="height:50px; background:green;"></div>
+      <div style="height:50px; background:red;"></div>
+    </div>
+  </div>
+  <div style="position:relative; width:100px; height:50px; background:green;"></div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/grid/grid-item-overflow-001.html b/tests/wpt/web-platform-tests/css/css-break/grid/grid-item-overflow-001.html
new file mode 100644
index 00000000000..30d6f3bb21c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/grid/grid-item-overflow-001.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1417976">
+<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div style="columns:2; column-fill:auto;">
+  <div style="display:grid;">
+    <div style="width:100px; max-height:50px;">
+      <div style="height:50px; background:green;"></div>
+      <div style="height:50px; background:red;"></div>
+    </div>
+  </div>
+  <div style="position:relative; width:100px; height:50px; background:green;"></div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-no-transition-ref.html b/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-no-transition-ref.html
new file mode 100644
index 00000000000..1955beef300
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-no-transition-ref.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<title>CSS Test Reference</title>
+<p>
+  <span style="font-weight:bold">Should be bold</span><br>
+  Should not be bold
+</p>
diff --git a/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-no-transition.html b/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-no-transition.html
new file mode 100644
index 00000000000..e5253daa63f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-no-transition.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>CSS Pseudo-Element Test: ::first-line style should not trigger transitions on elements</title>
+<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#first-line-pseudo">
+<link rel="match" href="first-line-inherited-no-transition-ref.html">
+<style>
+  p::first-line { font-weight: bold; }
+  span {
+    transition-property: font-weight;
+    transition-duration: 100s;
+    transition-delay: -50s;
+  }
+</style>
+<p><span>Should be bold<br>Should not be bold</span></p>
diff --git a/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-with-transition-ref.html b/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-with-transition-ref.html
new file mode 100644
index 00000000000..b28c17436a6
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-with-transition-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<title>CSS Test Reference</title>
+<style>
+  span { background-color: green; }
+  #orange { color: orange; }
+</style>
+<p>
+  <span id="orange">Orange on green</span><br>
+  <span>Black on green</span>
+</p>
diff --git a/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-with-transition.html b/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-with-transition.html
new file mode 100644
index 00000000000..88b1f343622
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-pseudo/first-line-inherited-with-transition.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>CSS Pseudo-Element Test: ::first-line style should not trigger transitions on elements</title>
+<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#first-line-pseudo">
+<link rel="match" href="first-line-inherited-with-transition-ref.html">
+<style>
+  p::first-line { color: orange; }
+  span {
+    background-color: black;
+    transition: background-color 1000s steps(2, start);
+  }
+  span.lime {
+    background-color: lime;
+  }
+</style>
+<p><span id="s">Orange on green<br>Black on green</span></p>
+<script>
+  s.offsetTop;
+  s.className = "lime";
+</script>
diff --git a/tests/wpt/web-platform-tests/css/css-text/white-space/reference/text-wrap-balance-line-clamp-001-ref.html b/tests/wpt/web-platform-tests/css/css-text/white-space/reference/text-wrap-balance-line-clamp-001-ref.html
new file mode 100644
index 00000000000..4e465be7ccf
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/white-space/reference/text-wrap-balance-line-clamp-001-ref.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<style>
+.container {
+  font-family: monospace;
+  font-size: 20px;
+  width: 20ch;
+  display: -webkit-box;
+  -webkit-box-orient: vertical;
+  -webkit-line-clamp: 2;
+  overflow: hidden;
+}
+</style>
+<div class="container">
+  123 567 901 345 789
+  123 567 901 345 789
+  123
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-text/white-space/text-wrap-balance-line-clamp-001.html b/tests/wpt/web-platform-tests/css/css-text/white-space/text-wrap-balance-line-clamp-001.html
new file mode 100644
index 00000000000..292e655464b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/white-space/text-wrap-balance-line-clamp-001.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<link rel="help" href="https://w3c.github.io/csswg-drafts/css-text-4/#valdef-text-wrap-balance">
+<link rel="match" href="reference/text-wrap-balance-line-clamp-001-ref.html">
+<style>
+.container {
+  font-family: monospace;
+  font-size: 20px;
+  width: 20ch;
+  display: -webkit-box;
+  -webkit-box-orient: vertical;
+  -webkit-line-clamp: 2;
+  overflow: hidden;
+  text-wrap: balance;
+}
+</style>
+<div class="container">
+  123 567 901 345 789
+  123 567 901 345 789
+  123
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-transitions/dynamic-root-element.html b/tests/wpt/web-platform-tests/css/css-transitions/dynamic-root-element.html
new file mode 100644
index 00000000000..befc20d1d08
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-transitions/dynamic-root-element.html
@@ -0,0 +1,34 @@
+<!doctype html>
+<meta charset="utf-8">
+<link rel="help" href="https://drafts.csswg.org/css-transitions/#starting">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1816672">
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<iframe></iframe>
+<script>
+  let t = async_test("Transitions don't incorrectly start on dynamic document element insertion");
+  window.onload = t.step_func_done(function() {
+    let frame = document.querySelector("iframe");
+    let doc = frame.contentDocument;
+    doc.open();
+    doc.write("<!doctype html>");
+    let root = doc.createElement("html");
+    root.innerHTML = `
+      <style>
+        div {
+          width: 100px;
+          height: 100px;
+          background-color: blue;
+          transition: margin-left 10s ease;
+          margin-left: 100px;
+        }
+      </style>
+      <div></div>
+    `;
+    doc.appendChild(root);
+    doc.close();
+    assert_equals(frame.contentWindow.getComputedStyle(doc.querySelector("div")).marginLeft, "100px", "Transition shouldn't have started");
+  });
+</script>
diff --git a/tests/wpt/web-platform-tests/css/css-transitions/zero-duration-multiple-transition.html b/tests/wpt/web-platform-tests/css/css-transitions/zero-duration-multiple-transition.html
index 4268ce766d7..7b85702092a 100644
--- a/tests/wpt/web-platform-tests/css/css-transitions/zero-duration-multiple-transition.html
+++ b/tests/wpt/web-platform-tests/css/css-transitions/zero-duration-multiple-transition.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <link rel="help" href="https://drafts.csswg.org/css-transitions/#starting">
 <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1461070">
-<link rel="author" title="Emilio Cobos Álvarez" href="emilio@crisal.io">
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <style>
diff --git a/tests/wpt/web-platform-tests/css/css-values/calc-infinity-nan-serialize-time.html b/tests/wpt/web-platform-tests/css/css-values/calc-infinity-nan-serialize-time.html
index fd3f02524ba..2baa890259c 100644
--- a/tests/wpt/web-platform-tests/css/css-values/calc-infinity-nan-serialize-time.html
+++ b/tests/wpt/web-platform-tests/css/css-values/calc-infinity-nan-serialize-time.html
@@ -15,6 +15,7 @@ function test_serialization(t,s, {prop="animationDuration"}={}) {
 var test_map = {
     "1s * NaN"                                     :"calc(NaN * 1s)",
     "1s * nan"                                     :"calc(NaN * 1s)",
+    "1ms * NaN"                                     :"calc(NaN * 1s)",
     "1s * infinity / infinity"                     :"calc(NaN * 1s)",
     "1s * 0 * infinity"                            :"calc(NaN * 1s)",
     "1s * (infinity + -infinity)"                  :"calc(NaN * 1s)",
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/3d-transform-incoming.html b/tests/wpt/web-platform-tests/css/css-view-transitions/3d-transform-incoming.html
index e1c172263b7..b3726d4cd51 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/3d-transform-incoming.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/3d-transform-incoming.html
@@ -38,7 +38,7 @@ div { box-sizing: border-box; will-change: transform }
 ::view-transition-group(hidden) { animation-duration: 300s; }
 ::view-transition-image-pair(hidden) { visibility: hidden; }
 ::view-transition-group(root) { visibility: hidden; }
-::view-transition { width: 100%; height: 100%; background: pink; }
+::view-transition { background: pink; }
 ::view-transition-group(*) { animation-delay: 300s; }
 ::view-transition-new(*) { animation: unset; opacity: 1; }
 ::view-transition-old(*) { animation: unset; opacity: 0; }
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/3d-transform-outgoing.html b/tests/wpt/web-platform-tests/css/css-view-transitions/3d-transform-outgoing.html
index 1796284c06d..746b93afd40 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/3d-transform-outgoing.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/3d-transform-outgoing.html
@@ -39,7 +39,7 @@ div { box-sizing: border-box; will-change: transform }
 ::view-transition-group(hidden) { animation-duration: 300s; }
 ::view-transition-image-pair(hidden) { visibility: hidden; }
 ::view-transition-group(root) { visibility: hidden; }
-::view-transition { width: 100%; height: 100%; background: pink; }
+::view-transition { background: pink; }
 ::view-transition-group(*) { animation-duration: 0s; }
 ::view-transition-new(*) { animation: unset; opacity: 0; }
 ::view-transition-old(*) { animation: unset; opacity: 1; }
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/content-visibility-auto-shared-element.html b/tests/wpt/web-platform-tests/css/css-view-transitions/content-visibility-auto-shared-element.html
index d76eab2fcd6..11b4957fbcc 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/content-visibility-auto-shared-element.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/content-visibility-auto-shared-element.html
@@ -47,7 +47,7 @@ html::view-transition-group(*) { animation-duration: 0s; }
 html::view-transition-new(*) { animation: unset; opacity: 0; }
 html::view-transition-old(*) { animation: unset; opacity: 1; }
 html::view-transition-group(root) { display: none; }
-html::view-transition { width: 100%; height: 100%; background: pink }
+html::view-transition { background: pink }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-paint-order-with-entry.html b/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-paint-order-with-entry.html
index efd1aff5df7..703b64f5c68 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-paint-order-with-entry.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-paint-order-with-entry.html
@@ -84,7 +84,7 @@ html::view-transition-old(two),
 html::view-transition-old(three) { animation: unset; opacity: 1; }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-paint-order.html b/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-paint-order.html
index 28a955bad66..c0e8769b473 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-paint-order.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-paint-order.html
@@ -69,7 +69,7 @@ html::view-transition-old(two),
 html::view-transition-old(three) { animation: unset; opacity: 1; }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-shared-element.html b/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-shared-element.html
index 9046b915b4f..33bbae70fc6 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-shared-element.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/css-tags-shared-element.html
@@ -51,7 +51,7 @@ html::view-transition-old(left-element),
 html::view-transition-old(right-element) { animation: unset; opacity: 1; }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/document-element-detatched-crash.html b/tests/wpt/web-platform-tests/css/css-view-transitions/document-element-detatched-crash.html
new file mode 100644
index 00000000000..3c5419a8102
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/document-element-detatched-crash.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>View transitions: documentElement.remove</title>
+<link rel="help" href="https://github.com/WICG/view-transitions">
+<link rel="author" href="mailto:vmpstr@chromium.org">
+
+<style>
+html {
+  display: none;
+}
+</style>
+
+<script>
+async function runTest() {
+  document.startViewTransition(() => {
+    requestAnimationFrame(() => document.documentElement.remove());
+  })
+
+}
+onload = () => requestAnimationFrame(runTest);
+</script>
+
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/far-away-capture.html b/tests/wpt/web-platform-tests/css/css-view-transitions/far-away-capture.html
index 7b003cbb769..bfe0b9fb948 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/far-away-capture.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/far-away-capture.html
@@ -41,7 +41,7 @@ html::view-transition-group(*) { animation-duration: 0s; }
 html::view-transition-new(*) { animation: unset; opacity: 0; }
 html::view-transition-old(*) { animation: unset; opacity: 1; }
 html::view-transition-group(root) { display: none; }
-html::view-transition { width: 100%; height: 100%; background: pink }
+html::view-transition { background: pink }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/hit-test-unpainted-element-from-point.html b/tests/wpt/web-platform-tests/css/css-view-transitions/hit-test-unpainted-element-from-point.html
index 47a8e5fb994..7c9ed911cb7 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/hit-test-unpainted-element-from-point.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/hit-test-unpainted-element-from-point.html
@@ -35,6 +35,13 @@ html { view-transition-name: none }
   background: blue;
 }
 
+html::view-transition {
+  pointer-events: none;
+}
+html::view-transition-group(*) {
+  pointer-events: auto;
+}
+
 html::view-transition-group(shared) {
   animation-delay: 300s;
 }
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/hit-test-unrelated-element.html b/tests/wpt/web-platform-tests/css/css-view-transitions/hit-test-unrelated-element.html
index dae232b74de..1b8868280b2 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/hit-test-unrelated-element.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/hit-test-unrelated-element.html
@@ -36,6 +36,13 @@ html { view-transition-name: none }
   background: green;
 }
 
+html::view-transition {
+  pointer-events: none;
+}
+html::view-transition-group(*) {
+  pointer-events: auto;
+}
+
 html::view-transition-group(shared) {
   animation-delay: 300s;
 }
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/japanese-tag.html b/tests/wpt/web-platform-tests/css/css-view-transitions/japanese-tag.html
index 67115a6fae6..976dcab4fca 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/japanese-tag.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/japanese-tag.html
@@ -60,7 +60,7 @@ html::view-transition-old(第三) { animation: unset; opacity: 1; }
 
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-and-old-sizes-match-ref.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-and-old-sizes-match-ref.html
index ca597dfbb84..b8c3b34c03a 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-and-old-sizes-match-ref.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-and-old-sizes-match-ref.html
@@ -32,7 +32,7 @@ html::view-transition-new(*) { animation: unset; opacity: 0; }
 html::view-transition-old(*) { animation: unset; opacity: 1; }
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 <div id=target class=box><div class=inner_overflow>X</div></div>
 <script>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-and-old-sizes-match.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-and-old-sizes-match.html
index 1549a402af0..78efa9d82fa 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-and-old-sizes-match.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-and-old-sizes-match.html
@@ -34,7 +34,7 @@ html::view-transition-new(*) { animation: unset; opacity: 1; }
 html::view-transition-old(*) { animation: unset; opacity: 0; }
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 <div id=target class=box><div class=inner_overflow>X</div></div>
 <script>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-clip-path.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-clip-path.html
index 0d4c94e47d6..4a2dfc78c27 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-clip-path.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-clip-path.html
@@ -31,7 +31,7 @@ html::view-transition-new(*) { animation: unset; opacity: 1; }
 html::view-transition-old(*) { animation: unset; opacity: 0; }
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 <div id=e1 class=box></div>
 <script>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-different-size.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-different-size.html
index a3ecddaf26c..a891dec5553 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-different-size.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-different-size.html
@@ -43,7 +43,7 @@ html::view-transition-new(*) { animation: unset; opacity: 1; }
 html::view-transition-old(*) { animation: unset; opacity: 0; }
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 <div id=e1 class=box>one</div>
 <div id=e2 class=box>two</div>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-opacity.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-opacity.html
index 7f23f9110a9..ab4efd1f424 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-opacity.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-opacity.html
@@ -26,7 +26,7 @@ html::view-transition-new(*) { animation: unset; opacity: 1; }
 html::view-transition-old(*) { animation: unset; opacity: 0; }
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 <div id=e1 class=box></div>
 <div id=e2 class=box></div>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-positioned-spans.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-positioned-spans.html
index 39bbfbfb123..b88654cd379 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-positioned-spans.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-positioned-spans.html
@@ -20,7 +20,7 @@ html::view-transition-new(*) { animation: unset; opacity: 1; }
 html::view-transition-old(*) { animation: unset; opacity: 0; }
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 <span id=target>This is a span</span>
 <script>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-spans.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-spans.html
index 661d7c8a01a..843f6752d76 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-spans.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-captures-spans.html
@@ -17,7 +17,7 @@ html::view-transition-new(*) { animation: unset; opacity: 1; }
 html::view-transition-old(*) { animation: unset; opacity: 0; }
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 <span id=target>This is a span</span>
 <script>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-container-writing-modes.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-container-writing-modes.html
index 7b55a0f012f..e7ac768e17d 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-container-writing-modes.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-container-writing-modes.html
@@ -53,7 +53,7 @@ html::view-transition-old(s3) { animation: unset; opacity: 0; }
 
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-element-writing-modes.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-element-writing-modes.html
index 78ce545b74a..d7740d78f54 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-element-writing-modes.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-element-writing-modes.html
@@ -54,7 +54,7 @@ html::view-transition-old(s3) { animation: unset; opacity: 0; }
 
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-intrinsic-aspect-ratio.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-intrinsic-aspect-ratio.html
index 69e8f82e9f1..53ec94122f0 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-intrinsic-aspect-ratio.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-intrinsic-aspect-ratio.html
@@ -47,7 +47,7 @@ html::view-transition-group(target2) {
 
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div id=target1 class=box></div>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-is-empty-div.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-is-empty-div.html
index 53f3e23b686..bacc63f1945 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-is-empty-div.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-is-empty-div.html
@@ -37,7 +37,7 @@ html::view-transition-new(shared) { animation: unset; opacity: 1; }
 html::view-transition-old(shared) { animation: unset; opacity: 1; }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-is-inline.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-is-inline.html
index d971ec4eaa6..c341444f342 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-is-inline.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-is-inline.html
@@ -57,8 +57,6 @@ body { margin : 0; }
   view-transition-name: none;
 }
 ::view-transition {
-  width: 100%;
-  height: 100%;
   background-color: rebeccapurple;
 }
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-fit-fill.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-fit-fill.html
index 2a34348c12a..b891eee16d5 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-fit-fill.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-fit-fill.html
@@ -57,7 +57,7 @@ html::view-transition-group(hidden) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div id=target><div id=inner></div></div>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-fit-none.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-fit-none.html
index 0ec9d0bc8a4..d4b81b1a0ee 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-fit-none.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-fit-none.html
@@ -50,7 +50,7 @@ html::view-transition-group(hidden) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div id=target>This is text</div>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-clip-path-reference.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-clip-path-reference.html
index a8507f5f33e..01a3ed3204f 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-clip-path-reference.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-clip-path-reference.html
@@ -55,7 +55,7 @@ html::view-transition-new(target-two) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div id=one class=target>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-clip-path.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-clip-path.html
index d6a3f925cbf..dcd5fec70a1 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-clip-path.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-clip-path.html
@@ -55,7 +55,7 @@ html::view-transition-new(target-two) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div id=one class=target>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-overflow-clipped.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-overflow-clipped.html
index 247a33d15bc..593901529f4 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-overflow-clipped.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-overflow-clipped.html
@@ -46,7 +46,7 @@ html::view-transition-new(target) {
 html::view-transition-old(target) { animation: unset; opacity: 0; height: 100%; }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div class=target>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-overflow.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-overflow.html
index d0c129a1abf..2bbea1e1c4c 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-overflow.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-object-view-box-overflow.html
@@ -46,7 +46,7 @@ html::view-transition-new(target) {
 html::view-transition-old(target) { animation: unset; opacity: 0; height: 100%; }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div class=target>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-scaling.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-scaling.html
index 5ce6d5ba693..4ea3c2e04a4 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-scaling.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-scaling.html
@@ -43,7 +43,7 @@ html::view-transition-old(shared) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div id=target class="shared src"><div class=inner></div></div>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-with-overflow-zoomed.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-with-overflow-zoomed.html
index fef9b26b2c2..59170ebf003 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-with-overflow-zoomed.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-with-overflow-zoomed.html
@@ -34,7 +34,7 @@ html::view-transition-new(target) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div class=ancestor>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-with-overflow.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-with-overflow.html
index d2c802dbf53..e2dc045089b 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-with-overflow.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-content-with-overflow.html
@@ -31,7 +31,7 @@ html::view-transition-new(target) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div class=target>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/new-element-on-start.html b/tests/wpt/web-platform-tests/css/css-view-transitions/new-element-on-start.html
index f0a8c144a98..e3ec5463bfd 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/new-element-on-start.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/new-element-on-start.html
@@ -42,7 +42,7 @@ html::view-transition-new(after) { animation-duration: 0s; }
 html::view-transition-old(after) { animation-duration: 0s; }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-clip-path.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-clip-path.html
index 0734edd56fd..a2faa7f1575 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-clip-path.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-clip-path.html
@@ -29,7 +29,7 @@ html::view-transition-new(*) { animation: unset; opacity: 0; }
 html::view-transition-old(*) { animation: unset; opacity: 1; }
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 <div id=e1 class=box></div>
 <script>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-different-size.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-different-size.html
index 547cc4d7ba2..a8d375f0646 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-different-size.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-different-size.html
@@ -43,7 +43,7 @@ html::view-transition-new(*) { animation: unset; opacity: 0; }
 html::view-transition-old(*) { animation: unset; opacity: 1; }
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 <div id=e1 class=box>one</div>
 <div id=e2 class=box>two</div>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-opacity.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-opacity.html
index 0b727f7972f..ee3e3e4cde1 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-opacity.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-captures-opacity.html
@@ -27,7 +27,7 @@ html::view-transition-new(*) { animation: unset; opacity: 0; }
 html::view-transition-old(*) { animation: unset; opacity: 1; }
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 <div id=e1 class=box>one</div>
 <div id=e2 class=box>two</div>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-container-writing-modes.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-container-writing-modes.html
index 383585335d6..9896c271527 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-container-writing-modes.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-container-writing-modes.html
@@ -60,7 +60,7 @@ html::view-transition-old(s3) { animation: unset; opacity: 1; }
 
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-element-writing-modes.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-element-writing-modes.html
index b6903d10e61..5029c6aaaa3 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-element-writing-modes.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-element-writing-modes.html
@@ -60,7 +60,7 @@ html::view-transition-old(s3) { animation: unset; opacity: 1; }
 
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-intrinsic-aspect-ratio.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-intrinsic-aspect-ratio.html
index d166f438f4d..b46a7782178 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-intrinsic-aspect-ratio.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-intrinsic-aspect-ratio.html
@@ -47,7 +47,7 @@ html::view-transition-group(target2) {
 
 /* hide the root so we show transition background to ensure we're in a transition */
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div id=target1 class=box></div>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-is-empty-div.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-is-empty-div.html
index 54c56994d8c..137060c1ddb 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-is-empty-div.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-is-empty-div.html
@@ -36,7 +36,7 @@ html::view-transition-new(shared) { animation: unset; opacity: 1; }
 html::view-transition-old(shared) { animation: unset; opacity: 1; }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 
 </style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-is-inline.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-is-inline.html
index 9da15266bae..9f350237adc 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-is-inline.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-is-inline.html
@@ -57,8 +57,6 @@ body { margin : 0; }
   view-transition-name: none;
 }
 ::view-transition {
-  width: 100%;
-  height: 100%;
   background-color: rebeccapurple;
 }
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-fit-fill.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-fit-fill.html
index fb7549cc408..9ad8b14843f 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-fit-fill.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-fit-fill.html
@@ -57,7 +57,7 @@ html::view-transition-group(hidden) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div id=target><div id=inner></div></div>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-fit-none.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-fit-none.html
index 06472302b9e..1275aece7ca 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-fit-none.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-fit-none.html
@@ -50,7 +50,7 @@ html::view-transition-group(hidden) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div id=target>This is text</div>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-clip-path-reference.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-clip-path-reference.html
index ac566029a0f..14a1ee83d92 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-clip-path-reference.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-clip-path-reference.html
@@ -56,7 +56,7 @@ html::view-transition-old(target-two) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div id=one class=target>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-clip-path.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-clip-path.html
index 73100d05281..dff57c68f6b 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-clip-path.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-clip-path.html
@@ -56,7 +56,7 @@ html::view-transition-old(target-two) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div id=one class=target>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-overflow.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-overflow.html
index 7a1ef2d0052..ff9bb4e7d2b 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-overflow.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-object-view-box-overflow.html
@@ -45,7 +45,7 @@ html::view-transition-old(target) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div class=target>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-with-overflow-zoomed.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-with-overflow-zoomed.html
index 887bf7c6482..10257b761fa 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-with-overflow-zoomed.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-with-overflow-zoomed.html
@@ -34,7 +34,7 @@ html::view-transition-old(target) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div class=ancestor>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-with-overflow.html b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-with-overflow.html
index 7a40c8e386a..6ed31d375c6 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-with-overflow.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/old-content-with-overflow.html
@@ -31,7 +31,7 @@ html::view-transition-old(target) {
 }
 
 html::view-transition-group(root) { animation: unset; opacity: 0; }
-html::view-transition { width: 100%; height: 100%; background: lightpink; }
+html::view-transition { background: lightpink; }
 </style>
 
 <div class=target>
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/root-style-change-during-animation.html b/tests/wpt/web-platform-tests/css/css-view-transitions/root-style-change-during-animation.html
index 1453e5019d7..d1d291124bd 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/root-style-change-during-animation.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/root-style-change-during-animation.html
@@ -23,8 +23,6 @@
 }
 
 html::view-transition {
-  width: 100%;
-  height: 100%;
   background: grey;
 }
 
diff --git a/tests/wpt/web-platform-tests/css/css-view-transitions/set-universal-specificity.html b/tests/wpt/web-platform-tests/css/css-view-transitions/set-universal-specificity.html
index 1e8b7d0eb86..ec50b1e4078 100644
--- a/tests/wpt/web-platform-tests/css/css-view-transitions/set-universal-specificity.html
+++ b/tests/wpt/web-platform-tests/css/css-view-transitions/set-universal-specificity.html
@@ -15,7 +15,7 @@
 }
 
 /* We're verifying what we capture, so just display the old contents for 5 minutes.  */
-html::view-transition { width: 100%; height: 100%; background: pink; }
+html::view-transition { background: pink; }
 html::view-transition-group(shared) { animation-duration: 300s; }
 
 html::view-transition-old(shared) {
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-001-print-ref.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-001-print-ref.html
index 3d66305db0e..3d66305db0e 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-001-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-001-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-001-print.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-001-print.html
index 04feb96e847..04feb96e847 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-001-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-001-print.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-002-print-ref.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-002-print-ref.html
index 3d66305db0e..3d66305db0e 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-002-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-002-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-002-print.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-002-print.html
index c23c6be7d2a..c23c6be7d2a 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-002-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-002-print.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-003-print-ref.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-003-print-ref.html
index 3d66305db0e..3d66305db0e 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-003-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-003-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-003-print.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-003-print.html
index 1b06257175f..1b06257175f 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-003-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-003-print.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-004-print-ref.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-004-print-ref.html
index 3e3473bcb8e..3e3473bcb8e 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-004-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-004-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-004-print.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-004-print.html
index c138e9cd6aa..c138e9cd6aa 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-004-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-004-print.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-005-print-ref.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-005-print-ref.html
index e692ff8db37..e692ff8db37 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-005-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-005-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-005-print.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-005-print.html
index 0a2edc71788..0a2edc71788 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-005-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-005-print.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-006-print-ref.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-006-print-ref.html
index b03e1d78d00..b03e1d78d00 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-006-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-006-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-006-print.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-006-print.html
index 2386c166c81..2386c166c81 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-006-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-006-print.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-007-print-ref.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-007-print-ref.html
index f576c937715..f576c937715 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-007-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-007-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-007-print.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-007-print.html
index 8dcb700b96d..8dcb700b96d 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-007-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-007-print.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-008-print-ref.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-008-print-ref.html
index 6ed2528115a..6ed2528115a 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-008-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-008-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-008-print.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-008-print.html
index 02b5d63cc7c..02b5d63cc7c 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-008-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-008-print.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-abspos-with-link-print-ref.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-abspos-with-link-print-ref.html
index 000c05350b5..000c05350b5 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-abspos-with-link-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-abspos-with-link-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-abspos-with-link-print.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-abspos-with-link-print.html
index 057ddc91460..057ddc91460 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-abspos-with-link-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-abspos-with-link-print.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-iframe-print-ref.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-iframe-print-ref.html
index 5c171404508..5c171404508 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-iframe-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-iframe-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-iframe-print.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-iframe-print.html
index 5102d045c42..5102d045c42 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-iframe-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-iframe-print.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-link-with-inline-child-print-ref.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-link-with-inline-child-print-ref.html
index f12d31acd9d..f12d31acd9d 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-link-with-inline-child-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-link-with-inline-child-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-link-with-inline-child-print.html b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-link-with-inline-child-print.html
index 694e5376cbf..694e5376cbf 100644
--- a/tests/wpt/web-platform-tests/css/css-break/fixedpos-with-link-with-inline-child-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/fixedpos-with-link-with-inline-child-print.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/page-name-001-print-ref.html b/tests/wpt/web-platform-tests/css/printing/page-name-001-print-ref.html
index 69c5c37b5a3..69c5c37b5a3 100644
--- a/tests/wpt/web-platform-tests/css/css-break/page-name-001-print-ref.html
+++ b/tests/wpt/web-platform-tests/css/printing/page-name-001-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/css-break/page-name-001-print.html b/tests/wpt/web-platform-tests/css/printing/page-name-001-print.html
index 56281bb4ed5..56281bb4ed5 100644
--- a/tests/wpt/web-platform-tests/css/css-break/page-name-001-print.html
+++ b/tests/wpt/web-platform-tests/css/printing/page-name-001-print.html
diff --git a/tests/wpt/web-platform-tests/css/selectors/invalidation/nth-child-in-shadow-root.html b/tests/wpt/web-platform-tests/css/selectors/invalidation/nth-child-in-shadow-root.html
index 740b68f2003..443a12d229f 100644
--- a/tests/wpt/web-platform-tests/css/selectors/invalidation/nth-child-in-shadow-root.html
+++ b/tests/wpt/web-platform-tests/css/selectors/invalidation/nth-child-in-shadow-root.html
@@ -17,6 +17,7 @@
   </template>
 </div>
 <script>
+  polyfill_declarative_shadow_dom(host);
   host.offsetTop;
   host.shadowRoot.getElementById('toggler').classList.toggle('foo');
 </script>
diff --git a/tests/wpt/web-platform-tests/css/selectors/invalidation/nth-last-child-in-shadow-root.html b/tests/wpt/web-platform-tests/css/selectors/invalidation/nth-last-child-in-shadow-root.html
index 766bac0fa38..890abfe9972 100644
--- a/tests/wpt/web-platform-tests/css/selectors/invalidation/nth-last-child-in-shadow-root.html
+++ b/tests/wpt/web-platform-tests/css/selectors/invalidation/nth-last-child-in-shadow-root.html
@@ -19,6 +19,7 @@
   </template>
 </div>
 <script>
+  polyfill_declarative_shadow_dom(host);
   host.offsetTop;
   host.shadowRoot.getElementById("toggler").classList.toggle("foo");
 </script>
diff --git a/tests/wpt/web-platform-tests/css/selectors/visited-part-crash.html b/tests/wpt/web-platform-tests/css/selectors/visited-part-crash.html
new file mode 100644
index 00000000000..f4cb28995b1
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/selectors/visited-part-crash.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<link rel="help" href="https://crbug.com/1413904">
+<style>
+  .foo:visited::part(test) {}
+</style>
+<div class=foo>
+  <a class=foo href="">Test</a>
+</div>
diff --git a/tests/wpt/web-platform-tests/custom-elements/reactions/HTMLElement.html b/tests/wpt/web-platform-tests/custom-elements/reactions/HTMLElement.html
index bd252282161..0a1d40199e6 100644
--- a/tests/wpt/web-platform-tests/custom-elements/reactions/HTMLElement.html
+++ b/tests/wpt/web-platform-tests/custom-elements/reactions/HTMLElement.html
@@ -3,7 +3,7 @@
 <head>
 <title>Custom Elements: CEReactions on HTMLElement interface</title>
 <meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
-<meta name="assert" content="title, lang, translate, dir, hidden, tabIndex, accessKey, draggable, dropzone, contextMenu, spellcheck, innerText, and outerText of HTMLElement interface must have CEReactions">
+<meta name="assert" content="title, lang, translate, dir, hidden, tabIndex, accessKey, draggable, dropzone, contextMenu, spellcheck, popover, innerText, and outerText of HTMLElement interface must have CEReactions">
 <meta name="help" content="https://html.spec.whatwg.org/#htmlelement">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
@@ -23,6 +23,7 @@ testReflectAttribute('tabIndex', 'tabindex', '0', '1', 'tabIndex on HTMLElement'
 testReflectAttribute('accessKey', 'accesskey', 'a', 'b', 'accessKey on HTMLElement');
 testReflectAttributeWithContentValues('draggable', 'draggable', true, 'true', false, 'false', 'draggable on HTMLElement');
 testReflectAttributeWithContentValues('spellcheck', 'spellcheck', true, 'true', false, 'false', 'spellcheck on HTMLElement');
+testReflectAttribute('popover', 'popover', 'auto', 'manual', 'popover on HTMLElement');
 
 testNodeDisconnector(function (customElement) {
     customElement.parentNode.innerText = '';
diff --git a/tests/wpt/web-platform-tests/docs/writing-tests/making-a-testing-plan.md b/tests/wpt/web-platform-tests/docs/writing-tests/making-a-testing-plan.md
index eb96f31202e..a4007039ae4 100644
--- a/tests/wpt/web-platform-tests/docs/writing-tests/making-a-testing-plan.md
+++ b/tests/wpt/web-platform-tests/docs/writing-tests/making-a-testing-plan.md
@@ -382,7 +382,7 @@ that looks on a UNIX-like command line:
 
     $ ls fetch
     api/                           DIR_METADATA  OWNERS
-    connection-pool/               h1-parsing/   private-network-access/
+    connection-pool/               h1-parsing/   local-network-access/
     content-encoding/              http-cache/   range/
     content-length/                images/       README.md
     content-type/                  metadata/     redirect-navigate/
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/META.yml b/tests/wpt/web-platform-tests/fetch/local-network-access/META.yml
index 944ce6f14a1..944ce6f14a1 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/META.yml
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/META.yml
diff --git a/tests/wpt/web-platform-tests/fetch/local-network-access/README.md b/tests/wpt/web-platform-tests/fetch/local-network-access/README.md
new file mode 100644
index 00000000000..8995e3d7ef6
--- /dev/null
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/README.md
@@ -0,0 +1,10 @@
+# Local Network Access tests
+
+This directory contains tests for Local Network Access' integration with
+the Fetch specification.
+
+See also:
+
+* [The specification](https://wicg.github.io/local-network-access/)
+* [The repository](https://github.com/WICG/local-network-access/)
+* [Open issues](https://github.com/WICG/local-network-access/issues/)
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/fetch-from-treat-as-public.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/fetch-from-treat-as-public.https.window.js
index 90f7feb6341..90f7feb6341 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/fetch-from-treat-as-public.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/fetch-from-treat-as-public.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/fetch.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/fetch.https.window.js
index dbc4f23f677..dbc4f23f677 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/fetch.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/fetch.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/fetch.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/fetch.window.js
index 8ee54c90562..8ee54c90562 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/fetch.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/fetch.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/iframe.tentative.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/iframe.tentative.https.window.js
index 48bd6420fd9..48bd6420fd9 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/iframe.tentative.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/iframe.tentative.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/iframe.tentative.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/iframe.tentative.window.js
index e00cb202bec..e00cb202bec 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/iframe.tentative.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/iframe.tentative.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/mixed-content-fetch.tentative.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/mixed-content-fetch.tentative.https.window.js
index 54485dc7047..6f7d765617c 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/mixed-content-fetch.tentative.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/mixed-content-fetch.tentative.https.window.js
@@ -1,10 +1,10 @@
 // META: script=/common/utils.js
 // META: script=resources/support.sub.js
 //
-// Spec: https://wicg.github.io/private-network-access
+// Spec: https://wicg.github.io/local-network-access
 //
 // These tests verify that secure contexts can fetch non-secure subresources
-// from more private address spaces, avoiding mixed context checks, as long as
+// from more local address spaces, avoiding mixed context checks, as long as
 // they specify a valid `targetAddressSpace` fetch option that matches the
 // target server's address space.
 
@@ -16,9 +16,9 @@ setup(() => {
 // Given `addressSpace`, returns the other three possible IP address spaces.
 function otherAddressSpaces(addressSpace) {
   switch (addressSpace) {
-    case "local": return ["unknown", "private", "public"];
-    case "private": return ["unknown", "local", "public"];
-    case "public": return ["unknown", "local", "private"];
+    case "loopback": return ["unknown", "local", "public"];
+    case "local": return ["unknown", "loopback", "public"];
+    case "public": return ["unknown", "loopback", "local"];
   }
 }
 
@@ -169,64 +169,66 @@ function makeNoBypassTests({ source, target }) {
     },
     fetchOptions: { targetAddressSpace: correctAddressSpace },
     expected: FetchTestResult.FAILURE,
-  }), prefix + 'not a private network request.');
+  }), prefix + 'not a local network request.');
 }
 
-// Source: local secure context.
+// Source: loopback secure context.
 //
-// Fetches to the local and private address spaces cannot use
+// Fetches to the loopback and local address spaces cannot use
 // `targetAddressSpace` to bypass mixed content, as they are not otherwise
-// blocked by Private Network Access.
+// blocked by Local Network Access.
 
-makeNoBypassTests({ source: "local", target: "local" });
-makeNoBypassTests({ source: "local", target: "private" });
-makeNoBypassTests({ source: "local", target: "public" });
+makeNoBypassTests({ source: "loopback", target: "loopback" });
+makeNoBypassTests({ source: "loopback", target: "local" });
+makeNoBypassTests({ source: "loopback", target: "public" });
 
-// Source: private secure context.
+// Source: local secure context.
 //
-// Fetches to the local address space requires the right `targetAddressSpace`
+// Fetches to the loopback address space requires the right `targetAddressSpace`
 // option, as well as a successful preflight response carrying a PNA-specific
 // header.
 //
-// Fetches to the private address space cannot use `targetAddressSpace` to
-// bypass mixed content, as they are not otherwise blocked by Private Network
+// Fetches to the local address space cannot use `targetAddressSpace` to
+// bypass mixed content, as they are not otherwise blocked by Local Network
 // Access.
 
-makeTests({ source: "private", target: "local" });
+makeTests({ source: "local", target: "loopback" });
 
-makeNoBypassTests({ source: "private", target: "private" });
-makeNoBypassTests({ source: "private", target: "public" });
+makeNoBypassTests({ source: "local", target: "local" });
+makeNoBypassTests({ source: "local", target: "public" });
 
 // Source: public secure context.
 //
-// Fetches to the local and private address spaces require the right
+// Fetches to the loopback and local address spaces require the right
 // `targetAddressSpace` option, as well as a successful preflight response
 // carrying a PNA-specific header.
 
+makeTests({ source: "public", target: "loopback" });
 makeTests({ source: "public", target: "local" });
-makeTests({ source: "public", target: "private" });
 
 makeNoBypassTests({ source: "public", target: "public" });
 
-// These tests verify that documents fetched from the `local` address space yet
-// carrying the `treat-as-public-address` CSP directive are treated as if they
-// had been fetched from the `public` address space.
+// These tests verify that documents fetched from the `loopback` address space
+// yet carrying the `treat-as-public-address` CSP directive are treated as if
+// they had been fetched from the `public` address space.
 
-promise_test_parallel(t => fetchTest(t, {
-  source: {
-    server: Server.HTTPS_LOCAL,
-    treatAsPublic: true,
-  },
-  target: {
-    server: Server.HTTP_LOCAL,
-    behavior: {
-      preflight: PreflightBehavior.optionalSuccess(token()),
-      response: ResponseBehavior.allowCrossOrigin(),
-    },
-  },
-  fetchOptions: { targetAddressSpace: "private" },
-  expected: FetchTestResult.FAILURE,
-}), 'https-treat-as-public to http-local: wrong targetAddressSpace "private".');
+promise_test_parallel(
+    t => fetchTest(t, {
+      source: {
+        server: Server.HTTPS_LOCAL,
+        treatAsPublic: true,
+      },
+      target: {
+        server: Server.HTTP_LOCAL,
+        behavior: {
+          preflight: PreflightBehavior.optionalSuccess(token()),
+          response: ResponseBehavior.allowCrossOrigin(),
+        },
+      },
+      fetchOptions: {targetAddressSpace: 'local'},
+      expected: FetchTestResult.FAILURE,
+    }),
+    'https-treat-as-public to http-loopback: wrong targetAddressSpace "local".');
 
 promise_test_parallel(t => fetchTest(t, {
   source: {
@@ -240,9 +242,9 @@ promise_test_parallel(t => fetchTest(t, {
       response: ResponseBehavior.allowCrossOrigin(),
     },
   },
-  fetchOptions: { targetAddressSpace: "local" },
+  fetchOptions: { targetAddressSpace: "loopback" },
   expected: FetchTestResult.SUCCESS,
-}), "https-treat-as-public to http-local: success.");
+}), "https-treat-as-public to http-loopback: success.");
 
 promise_test_parallel(t => fetchTest(t, {
   source: {
@@ -256,9 +258,9 @@ promise_test_parallel(t => fetchTest(t, {
       response: ResponseBehavior.allowCrossOrigin(),
     },
   },
-  fetchOptions: { targetAddressSpace: "local" },
+  fetchOptions: { targetAddressSpace: "loopback" },
   expected: FetchTestResult.FAILURE,
-}), 'https-treat-as-public to http-private: wrong targetAddressSpace "local".');
+}), 'https-treat-as-public to http-local: wrong targetAddressSpace "loopback".');
 
 promise_test_parallel(t => fetchTest(t, {
   source: {
@@ -272,6 +274,6 @@ promise_test_parallel(t => fetchTest(t, {
       response: ResponseBehavior.allowCrossOrigin(),
     },
   },
-  fetchOptions: { targetAddressSpace: "private" },
+  fetchOptions: { targetAddressSpace: "local" },
   expected: FetchTestResult.SUCCESS,
-}), "https-treat-as-public to http-private: success.");
+}), "https-treat-as-public to http-local: success.");
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/nested-worker.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/nested-worker.https.window.js
index 3eeb435badb..3eeb435badb 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/nested-worker.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/nested-worker.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/nested-worker.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/nested-worker.window.js
index 6d246e1c76d..6d246e1c76d 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/nested-worker.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/nested-worker.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/preflight-cache.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/preflight-cache.https.window.js
index 87dbf501f62..87dbf501f62 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/preflight-cache.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/preflight-cache.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/redirect.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/redirect.https.window.js
index f8a53ad1889..f8a53ad1889 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/redirect.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/redirect.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/executor.html b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/executor.html
index d71212951cb..d71212951cb 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/executor.html
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/executor.html
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/fetcher.html b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/fetcher.html
index 000a5cc25bb..000a5cc25bb 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/fetcher.html
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/fetcher.html
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/fetcher.js b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/fetcher.js
index 3a1859876d4..3a1859876d4 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/fetcher.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/fetcher.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/iframed.html b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/iframed.html
index c889c2882a4..c889c2882a4 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/iframed.html
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/iframed.html
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/iframer.html b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/iframer.html
index 304cc54ae44..304cc54ae44 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/iframer.html
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/iframer.html
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/preflight.py b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/preflight.py
index 4b0bfefd4d6..4b0bfefd4d6 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/preflight.py
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/preflight.py
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/service-worker-bridge.html b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/service-worker-bridge.html
index 816de535fea..816de535fea 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/service-worker-bridge.html
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/service-worker-bridge.html
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/service-worker.js b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/service-worker.js
index bca71ad910c..bca71ad910c 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/service-worker.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/service-worker.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/shared-fetcher.js b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/shared-fetcher.js
index 30bde1e0542..30bde1e0542 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/shared-fetcher.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/shared-fetcher.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/shared-worker-blob-fetcher.html b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/shared-worker-blob-fetcher.html
index a79869b2f96..a79869b2f96 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/shared-worker-blob-fetcher.html
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/shared-worker-blob-fetcher.html
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/shared-worker-fetcher.html b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/shared-worker-fetcher.html
index 4af4b1f2395..4af4b1f2395 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/shared-worker-fetcher.html
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/shared-worker-fetcher.html
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/socket-opener.html b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/socket-opener.html
index 48d27216bed..48d27216bed 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/socket-opener.html
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/socket-opener.html
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/support.sub.js b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/support.sub.js
index 210184ec4b6..c07fd2c2ace 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/support.sub.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/support.sub.js
@@ -75,20 +75,20 @@ async function postMessageAndAwaitReply(target, message) {
 // Maps protocol (without the trailing colon) and address space to port.
 const SERVER_PORTS = {
   "http": {
-    "local": {{ports[http][0]}},
-    "private": {{ports[http-private][0]}},
+    "loopback": {{ports[http][0]}},
+    "local": {{ports[http-private][0]}},
     "public": {{ports[http-public][0]}},
   },
   "https": {
-    "local": {{ports[https][0]}},
-    "private": {{ports[https-private][0]}},
+    "loopback": {{ports[https][0]}},
+    "local": {{ports[https-private][0]}},
     "public": {{ports[https-public][0]}},
   },
   "ws": {
-    "local": {{ports[ws][0]}},
+    "loopback": {{ports[ws][0]}},
   },
   "wss": {
-    "local": {{ports[wss][0]}},
+    "loopback": {{ports[wss][0]}},
   },
 };
 
@@ -126,14 +126,14 @@ class Server {
     };
   }
 
-  static HTTP_LOCAL = Server.get("http", "local");
-  static HTTP_PRIVATE = Server.get("http", "private");
+  static HTTP_LOCAL = Server.get("http", "loopback");
+  static HTTP_PRIVATE = Server.get("http", "local");
   static HTTP_PUBLIC = Server.get("http", "public");
-  static HTTPS_LOCAL = Server.get("https", "local");
-  static HTTPS_PRIVATE = Server.get("https", "private");
+  static HTTPS_LOCAL = Server.get("https", "loopback");
+  static HTTPS_PRIVATE = Server.get("https", "local");
   static HTTPS_PUBLIC = Server.get("https", "public");
-  static WS_LOCAL = Server.get("ws", "local");
-  static WSS_LOCAL = Server.get("wss", "local");
+  static WS_LOCAL = Server.get("ws", "loopback");
+  static WSS_LOCAL = Server.get("wss", "loopback");
 };
 
 // Resolves a URL relative to the current location, returning an absolute URL.
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/worker-blob-fetcher.html b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/worker-blob-fetcher.html
index 5a50271e11b..5a50271e11b 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/worker-blob-fetcher.html
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/worker-blob-fetcher.html
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/worker-fetcher.html b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/worker-fetcher.html
index bd155a532bd..bd155a532bd 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/worker-fetcher.html
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/worker-fetcher.html
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/worker-fetcher.js b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/worker-fetcher.js
index aab49afe6f4..aab49afe6f4 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/worker-fetcher.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/worker-fetcher.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/xhr-sender.html b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/xhr-sender.html
index b131fa41f9a..b131fa41f9a 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/resources/xhr-sender.html
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/resources/xhr-sender.html
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/service-worker-background-fetch.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/service-worker-background-fetch.https.window.js
index 6369b166e21..6369b166e21 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/service-worker-background-fetch.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/service-worker-background-fetch.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/service-worker-fetch.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/service-worker-fetch.https.window.js
index 5645d784561..5645d784561 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/service-worker-fetch.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/service-worker-fetch.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/service-worker-update.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/service-worker-update.https.window.js
index fe2bf58f660..fe2bf58f660 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/service-worker-update.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/service-worker-update.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/service-worker.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/service-worker.https.window.js
index 8dc631f65a8..8dc631f65a8 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/service-worker.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/service-worker.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker-blob-fetch.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker-blob-fetch.https.window.js
index ad9cd09c31b..ad9cd09c31b 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker-blob-fetch.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker-blob-fetch.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker-blob-fetch.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker-blob-fetch.window.js
index d430ea73837..d430ea73837 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker-blob-fetch.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker-blob-fetch.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker-fetch.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker-fetch.https.window.js
index 7066b359caa..7066b359caa 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker-fetch.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker-fetch.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker-fetch.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker-fetch.window.js
index 9bc1a89bead..9bc1a89bead 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker-fetch.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker-fetch.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker.https.window.js
index ecb70c41245..ecb70c41245 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker.window.js
index ffa8a360c70..ffa8a360c70 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/shared-worker.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/shared-worker.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/websocket.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/websocket.https.window.js
index 0731896098b..0731896098b 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/websocket.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/websocket.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/websocket.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/websocket.window.js
index a44cfaedec7..a44cfaedec7 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/websocket.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/websocket.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/worker-blob-fetch.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/worker-blob-fetch.window.js
index e119746b8a6..e119746b8a6 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/worker-blob-fetch.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/worker-blob-fetch.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/worker-fetch.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/worker-fetch.https.window.js
index 89e0c3cf1f3..89e0c3cf1f3 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/worker-fetch.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/worker-fetch.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/worker-fetch.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/worker-fetch.window.js
index 4d6b12f0671..4d6b12f0671 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/worker-fetch.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/worker-fetch.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/worker.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/worker.https.window.js
index 2d0dddd685c..2d0dddd685c 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/worker.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/worker.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/worker.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/worker.window.js
index 118c0992544..118c0992544 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/worker.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/worker.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/xhr-from-treat-as-public.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/xhr-from-treat-as-public.https.window.js
index 04fe5449d19..04fe5449d19 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/xhr-from-treat-as-public.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/xhr-from-treat-as-public.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/xhr.https.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/xhr.https.window.js
index 4dc5da9912f..4dc5da9912f 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/xhr.https.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/xhr.https.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/xhr.window.js b/tests/wpt/web-platform-tests/fetch/local-network-access/xhr.window.js
index fa307dc559a..fa307dc559a 100644
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/xhr.window.js
+++ b/tests/wpt/web-platform-tests/fetch/local-network-access/xhr.window.js
diff --git a/tests/wpt/web-platform-tests/fetch/private-network-access/README.md b/tests/wpt/web-platform-tests/fetch/private-network-access/README.md
deleted file mode 100644
index a69aab48723..00000000000
--- a/tests/wpt/web-platform-tests/fetch/private-network-access/README.md
+++ /dev/null
@@ -1,10 +0,0 @@
-# Private Network Access tests
-
-This directory contains tests for Private Network Access' integration with
-the Fetch specification.
-
-See also:
-
-* [The specification](https://wicg.github.io/private-network-access/)
-* [The repository](https://github.com/WICG/private-network-access/)
-* [Open issues](https://github.com/WICG/private-network-access/issues/)
diff --git a/tests/wpt/web-platform-tests/fs/FileSystemFileHandle-sync-access-handle-writable-lock.https.tentative.worker.js b/tests/wpt/web-platform-tests/fs/FileSystemFileHandle-sync-access-handle-writable-lock.https.tentative.worker.js
index 7f244bc02aa..1b7fcda35bf 100644
--- a/tests/wpt/web-platform-tests/fs/FileSystemFileHandle-sync-access-handle-writable-lock.https.tentative.worker.js
+++ b/tests/wpt/web-platform-tests/fs/FileSystemFileHandle-sync-access-handle-writable-lock.https.tentative.worker.js
@@ -7,6 +7,7 @@ directory_test(async (t, root_dir) =>  {
   const fileHandle = await root_dir.getFileHandle('OPFS.test', {create: true});
 
   const syncHandle1 = await fileHandle.createSyncAccessHandle();
+  t.add_cleanup(() => syncHandle1.close());
   await promise_rejects_dom(
       t, 'NoModificationAllowedError', fileHandle.createSyncAccessHandle());
 
@@ -23,6 +24,7 @@ directory_test(async (t, root_dir) =>  {
   t.add_cleanup(() => fooSyncHandle.close());
 
   const barSyncHandle1 = await barFileHandle.createSyncAccessHandle();
+  t.add_cleanup(() => barSyncHandle1.close());
   await promise_rejects_dom(
       t, 'NoModificationAllowedError', barFileHandle.createSyncAccessHandle());
 
@@ -60,8 +62,10 @@ directory_test(async (t, root_dir) =>  {
   const fileHandle = await root_dir.getFileHandle('OPFS.test', {create: true});
 
   const syncHandle = await fileHandle.createSyncAccessHandle();
+  t.add_cleanup(() => { syncHandle.close(); });
   await promise_rejects_dom(
-      t, 'NoModificationAllowedError', fileHandle.createWritable());
+    t, 'NoModificationAllowedError', cleanup_writable(t, fileHandle.createWritable()));
+
   syncHandle.close();
   const writable = await fileHandle.createWritable();
   await writable.close();
diff --git a/tests/wpt/web-platform-tests/html/anonymous-iframe/worker-cookies.tentative.https.window.js b/tests/wpt/web-platform-tests/html/anonymous-iframe/worker-cookies.tentative.https.window.js
new file mode 100644
index 00000000000..4c29983c2b2
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/anonymous-iframe/worker-cookies.tentative.https.window.js
@@ -0,0 +1,69 @@
+// META: timeout=long
+// META: variant=?worker=dedicated_worker
+// META: variant=?worker=shared_worker
+// META: variant=?worker=service_worker
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/html/cross-origin-embedder-policy/credentialless/resources/common.js
+// META: script=./resources/common.js
+
+// Execute the same set of tests for every type of worker.
+// - DedicatedWorkers
+// - SharedWorkers
+// - ServiceWorkers.
+const params = new URLSearchParams(document.location.search);
+const worker_param = params.get("worker") || "dedicated_worker";
+
+const cookie_key = token();
+const cookie_value = "cookie_value";
+const cookie_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+
+// Create worker spawned from `context` and return its uuid.
+const workerFrom = context => {
+  const reply = token();
+  send(context, `
+    for(deps of [
+      "/common/utils.js",
+      "/html/cross-origin-embedder-policy/credentialless/resources/common.js",
+    ]) {
+      await new Promise(resolve => {
+        const script = document.createElement("script");
+        script.src = deps;
+        script.onload = resolve;
+        document.body.appendChild(script);
+      });
+    }
+
+    const worker_constructor = environments["${worker_param}"];
+    const headers = "";
+    const [worker, error] = worker_constructor(headers);
+    send("${reply}", worker);
+  `);
+  return receive(reply);
+};
+
+// Set a cookie from a top-level document.
+promise_test(async test => {
+  await setCookie(cookie_origin, cookie_key, cookie_value);
+}, "set cookies");
+
+// Control: iframe is not credentialless. The worker can access cookies.
+promise_test(async test => {
+  const headers = token();
+  send(await workerFrom(newIframe(cookie_origin)), `
+    fetch("${showRequestHeaders(cookie_origin, headers)}");
+  `);
+  const cookie = parseCookies(JSON.parse(await receive(headers)));
+  assert_equals(cookie[cookie_key], cookie_value)
+}, "Worker spawned from normal iframe can access global cookies");
+
+// Experiment: iframe is credentialless.
+promise_test(async test => {
+  const headers = token();
+  send(await workerFrom(newIframeCredentialless(cookie_origin)), `
+    fetch("${showRequestHeaders(cookie_origin, headers)}");
+  `);
+  const cookie = parseCookies(JSON.parse(await receive(headers)));
+  assert_equals(cookie[cookie_key], undefined)
+}, "Worker spawned from credentialless iframe can't access global cookies");
diff --git a/tests/wpt/web-platform-tests/html/canvas/element/transformations/2d.transformation.scale.zero.html b/tests/wpt/web-platform-tests/html/canvas/element/transformations/2d.transformation.scale.zero.html
index 4ff7397ae8c..f495ee2e6a0 100644
--- a/tests/wpt/web-platform-tests/html/canvas/element/transformations/2d.transformation.scale.zero.html
+++ b/tests/wpt/web-platform-tests/html/canvas/element/transformations/2d.transformation.scale.zero.html
@@ -36,8 +36,6 @@ ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
 ctx.restore();
 
-canvas.toDataURL();
-
 _assertPixel(canvas, 50,25, 0,255,0,255);
 
 
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.order.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.order.html
index b1308035936..83815f367b7 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.order.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.order.html
@@ -15,18 +15,21 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.scale(2, 1);
 ctx.rotate(Math.PI / 2);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, -50, 50, 50);
 _assertPixel(canvas, 75,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.order.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.order.worker.js
index 7ac61067b4b..d00fe230efb 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.order.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.order.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.scale(2, 1);
 ctx.rotate(Math.PI / 2);
 ctx.fillStyle = '#0f0';
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.html
index 0a98c7e65f9..c20608f81c8 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.html
@@ -15,17 +15,20 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.rotate(Math.PI / 2);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, -100, 50, 100);
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.worker.js
index 465d3b67907..8506937583e 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.direction.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.rotate(Math.PI / 2);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, -100, 50, 100);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.html
index 0f2227a4e5c..bbc294a24fe 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.html
@@ -15,20 +15,25 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 10);
 ctx.rotate(Infinity);
 ctx.rotate(-Infinity);
 ctx.rotate(NaN);
+
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -10, 100, 50);
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.worker.js
index 56a04d874e8..2c892a561b2 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.nonfinite.worker.js
@@ -18,12 +18,15 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 10);
 ctx.rotate(Infinity);
 ctx.rotate(-Infinity);
 ctx.rotate(NaN);
+
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -10, 100, 50);
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.html
index 8a78dddd7f8..75121e39d7f 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.html
@@ -15,17 +15,20 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.rotate(Math.PI); // should fail obviously if this is 3.1 degrees
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -50, 100, 50);
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.worker.js
index 9780e68a02f..8c2fdd8ab08 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.radians.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.rotate(Math.PI); // should fail obviously if this is 3.1 degrees
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -50, 100, 50);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.html
index 7711a8c1404..1f9eb838c81 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.html
@@ -15,13 +15,15 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.rotate(Math.PI * (1 + 4096)); // == pi (mod 2*pi)
 // We need about pi +/- 0.001 in order to get correct-looking results
 // 32-bit floats can store pi*4097 with precision 2^-10, so that should
@@ -31,6 +33,7 @@ ctx.fillRect(-100, -50, 100, 50);
 _assertPixel(canvas, 50,25, 0,255,0,255);
 _assertPixel(canvas, 98,2, 0,255,0,255);
 _assertPixel(canvas, 98,47, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.worker.js
index db9fbd43bc1..579a1b6dd68 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrap.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.rotate(Math.PI * (1 + 4096)); // == pi (mod 2*pi)
 // We need about pi +/- 0.001 in order to get correct-looking results
 // 32-bit floats can store pi*4097 with precision 2^-10, so that should
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.html
index 49959dac022..c06f6453155 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.html
@@ -15,19 +15,22 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.rotate(-Math.PI * (1 + 4096));
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -50, 100, 50);
 _assertPixel(canvas, 50,25, 0,255,0,255);
 _assertPixel(canvas, 98,2, 0,255,0,255);
 _assertPixel(canvas, 98,47, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.worker.js
index 7f93f654582..cce91071210 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.wrapnegative.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.rotate(-Math.PI * (1 + 4096));
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -50, 100, 50);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.html
index 2255b9973dd..0101fa27c58 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.html
@@ -15,17 +15,20 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.rotate(0);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 100, 50);
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.worker.js
index 10e00c4656a..1ad0aa59853 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.rotate.zero.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.rotate(0);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 100, 50);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.html
index c78ac79f5ab..5c70438ba16 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.html
@@ -15,17 +15,20 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.scale(2, 4);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 50, 12.5);
 _assertPixel(canvas, 90,40, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.worker.js
index 39b52d57b5f..73be61007a5 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.basic.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.scale(2, 4);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 50, 12.5);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.html
index a67d05eb2c2..8974545500a 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.html
@@ -15,17 +15,20 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.scale(1e5, 1e5);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 1, 1);
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.worker.js
index 1293cce196f..30af9631e6c 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.large.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.scale(1e5, 1e5);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 1, 1);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.html
index 717f3d305a1..b07acf15ce6 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.html
@@ -15,18 +15,21 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.scale(Math.sqrt(2), Math.sqrt(2));
 ctx.scale(Math.sqrt(2), Math.sqrt(2));
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 50, 25);
 _assertPixel(canvas, 90,40, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.worker.js
index c5a38207ea0..267a7df9441 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.multiple.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.scale(Math.sqrt(2), Math.sqrt(2));
 ctx.scale(Math.sqrt(2), Math.sqrt(2));
 ctx.fillStyle = '#0f0';
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.html
index fbcec5d763a..b516c1154f4 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.html
@@ -15,18 +15,21 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.save();
 ctx.scale(-1, 1);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-50, 0, 50, 50);
 ctx.restore();
+
 ctx.save();
 ctx.scale(1, -1);
 ctx.fillStyle = '#0f0';
@@ -34,6 +37,7 @@ ctx.fillRect(50, -50, 50, 50);
 ctx.restore();
 _assertPixel(canvas, 25,25, 0,255,0,255);
 _assertPixel(canvas, 75,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.worker.js
index a5344a9a717..0e68f7e8d8c 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.worker.js
@@ -18,11 +18,13 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.save();
 ctx.scale(-1, 1);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-50, 0, 50, 50);
 ctx.restore();
+
 ctx.save();
 ctx.scale(1, -1);
 ctx.fillStyle = '#0f0';
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.html
index ac38bc1fa46..3d9c75a0dc0 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.html
@@ -15,13 +15,15 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 10);
 ctx.scale(Infinity, 0.1);
 ctx.scale(-Infinity, 0.1);
@@ -30,9 +32,12 @@ ctx.scale(0.1, Infinity);
 ctx.scale(0.1, -Infinity);
 ctx.scale(0.1, NaN);
 ctx.scale(Infinity, Infinity);
+
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -10, 100, 50);
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.worker.js
index 95e9922b69b..67c5c104481 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.nonfinite.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 10);
 ctx.scale(Infinity, 0.1);
 ctx.scale(-Infinity, 0.1);
@@ -26,8 +27,10 @@ ctx.scale(0.1, Infinity);
 ctx.scale(0.1, -Infinity);
 ctx.scale(0.1, NaN);
 ctx.scale(Infinity, Infinity);
+
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -10, 100, 50);
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.html
index 9eae3b1db33..4b664125c22 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.html
@@ -15,26 +15,31 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.save();
 ctx.translate(50, 0);
 ctx.scale(0, 1);
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
 ctx.restore();
+
 ctx.save();
 ctx.translate(0, 25);
 ctx.scale(1, 0);
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
 ctx.restore();
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.worker.js
index 0f8dad04422..dc52323bc23 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.scale.zero.worker.js
@@ -18,18 +18,21 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.save();
 ctx.translate(50, 0);
 ctx.scale(0, 1);
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
 ctx.restore();
+
 ctx.save();
 ctx.translate(0, 25);
 ctx.scale(1, 0);
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
 ctx.restore();
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.html
index f8dfb048812..e28710858b1 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.html
@@ -15,18 +15,22 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.setTransform(1/2,0, 0,1/2, 0,0);
+ctx.setTransform();
 ctx.setTransform(2,0, 0,2, 0,0);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 50, 25);
 _assertPixel(canvas, 75,35, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.worker.js
index 9d01c1302ec..b6b004601fb 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.multiple.worker.js
@@ -18,7 +18,9 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.setTransform(1/2,0, 0,1/2, 0,0);
+ctx.setTransform();
 ctx.setTransform(2,0, 0,2, 0,0);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 50, 25);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.html
index fbed341a04a..03c1b74579f 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.html
@@ -15,13 +15,15 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 10);
 ctx.setTransform(Infinity, 0, 0, 0, 0, 0);
 ctx.setTransform(-Infinity, 0, 0, 0, 0, 0);
@@ -98,9 +100,12 @@ ctx.setTransform(0, 0, 0, Infinity, Infinity, 0);
 ctx.setTransform(0, 0, 0, Infinity, Infinity, Infinity);
 ctx.setTransform(0, 0, 0, Infinity, 0, Infinity);
 ctx.setTransform(0, 0, 0, 0, Infinity, Infinity);
+
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -10, 100, 50);
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.worker.js
index be7e055a853..bd48262ca7d 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.nonfinite.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 10);
 ctx.setTransform(Infinity, 0, 0, 0, 0, 0);
 ctx.setTransform(-Infinity, 0, 0, 0, 0, 0);
@@ -94,8 +95,10 @@ ctx.setTransform(0, 0, 0, Infinity, Infinity, 0);
 ctx.setTransform(0, 0, 0, Infinity, Infinity, Infinity);
 ctx.setTransform(0, 0, 0, Infinity, 0, Infinity);
 ctx.setTransform(0, 0, 0, 0, Infinity, Infinity);
+
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -10, 100, 50);
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.html
index 40fa8015d4c..c49d9d8a298 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.html
@@ -15,11 +15,12 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 // Create green with a red square ring inside it
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 100, 50);
@@ -27,6 +28,7 @@ ctx.fillStyle = '#f00';
 ctx.fillRect(20, 10, 60, 30);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(40, 20, 20, 10);
+
 // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
 ctx.setTransform(1,4, 2,3, 5,6);
 // Post-transform coordinates:
@@ -48,6 +50,7 @@ _assertPixel(canvas, 39,19, 0,255,0,255);
 _assertPixel(canvas, 61,19, 0,255,0,255);
 _assertPixel(canvas, 39,31, 0,255,0,255);
 _assertPixel(canvas, 61,31, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.worker.js
index 6490f9b7094..6f4b4769b61 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.setTransform.skewed.worker.js
@@ -23,6 +23,7 @@ ctx.fillStyle = '#f00';
 ctx.fillRect(20, 10, 60, 30);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(40, 20, 20, 10);
+
 // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
 ctx.setTransform(1,4, 2,3, 5,6);
 // Post-transform coordinates:
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.html
index 92753bc9e3e..1efa306707c 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.html
@@ -15,17 +15,20 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.transform(1,0, 0,1, 0,0);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 100, 50);
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.worker.js
index 99ac58d49d3..51a11ee03de 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.identity.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.transform(1,0, 0,1, 0,0);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 100, 50);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.html
index f69fa4330af..05a1e7e5ead 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.html
@@ -15,18 +15,21 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.transform(1,2, 3,4, 5,6);
 ctx.transform(-2,1, 3/2,-1/2, 1,-2);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 100, 50);
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.worker.js
index 1a0e702a05b..61a5f052dc7 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.multiply.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.transform(1,2, 3,4, 5,6);
 ctx.transform(-2,1, 3/2,-1/2, 1,-2);
 ctx.fillStyle = '#0f0';
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.html
index 6e679341d5d..b81bda463bd 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.html
@@ -15,13 +15,15 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 10);
 ctx.transform(Infinity, 0, 0, 0, 0, 0);
 ctx.transform(-Infinity, 0, 0, 0, 0, 0);
@@ -98,9 +100,12 @@ ctx.transform(0, 0, 0, Infinity, Infinity, 0);
 ctx.transform(0, 0, 0, Infinity, Infinity, Infinity);
 ctx.transform(0, 0, 0, Infinity, 0, Infinity);
 ctx.transform(0, 0, 0, 0, Infinity, Infinity);
+
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -10, 100, 50);
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.worker.js
index d596fc9744b..ee675151b3a 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.nonfinite.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 10);
 ctx.transform(Infinity, 0, 0, 0, 0, 0);
 ctx.transform(-Infinity, 0, 0, 0, 0, 0);
@@ -94,8 +95,10 @@ ctx.transform(0, 0, 0, Infinity, Infinity, 0);
 ctx.transform(0, 0, 0, Infinity, Infinity, Infinity);
 ctx.transform(0, 0, 0, Infinity, 0, Infinity);
 ctx.transform(0, 0, 0, 0, Infinity, Infinity);
+
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -10, 100, 50);
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.html
index 78e1252c67c..9cb6dfcc52e 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.html
@@ -15,11 +15,12 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 // Create green with a red square ring inside it
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 100, 50);
@@ -27,6 +28,7 @@ ctx.fillStyle = '#f00';
 ctx.fillRect(20, 10, 60, 30);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(40, 20, 20, 10);
+
 // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
 ctx.transform(1,4, 2,3, 5,6);
 // Post-transform coordinates:
@@ -48,6 +50,7 @@ _assertPixel(canvas, 39,19, 0,255,0,255);
 _assertPixel(canvas, 61,19, 0,255,0,255);
 _assertPixel(canvas, 39,31, 0,255,0,255);
 _assertPixel(canvas, 61,31, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.worker.js
index 46416bb9570..638adc14c44 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.transform.skewed.worker.js
@@ -23,6 +23,7 @@ ctx.fillStyle = '#f00';
 ctx.fillRect(20, 10, 60, 30);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(40, 20, 20, 10);
+
 // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
 ctx.transform(1,4, 2,3, 5,6);
 // Post-transform coordinates:
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.html
index 8144ab0cc1b..51a7527b5cc 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.html
@@ -15,17 +15,20 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 50);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -50, 100, 50);
 _assertPixel(canvas, 90,40, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.worker.js
index 695aff37da5..11e8bd897b4 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.basic.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 50);
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -50, 100, 50);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.html
index 4127a7a157e..010b28f3c6a 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.html
@@ -15,13 +15,15 @@ var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
 });
-t.step(function() {
+t.step(async function() {
 
 var canvas = new OffscreenCanvas(100, 50);
 var ctx = canvas.getContext('2d');
 
+await (function(canvas, ctx) {
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 10);
 ctx.translate(Infinity, 0.1);
 ctx.translate(-Infinity, 0.1);
@@ -30,9 +32,12 @@ ctx.translate(0.1, Infinity);
 ctx.translate(0.1, -Infinity);
 ctx.translate(0.1, NaN);
 ctx.translate(Infinity, Infinity);
+
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -10, 100, 50);
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
+})(canvas, ctx);
 t.done();
 
 });
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.worker.js
index 84b52a203b6..c3ff3a31a8c 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/transformations/2d.transformation.translate.nonfinite.worker.js
@@ -18,6 +18,7 @@ var ctx = canvas.getContext('2d');
 
 ctx.fillStyle = '#f00';
 ctx.fillRect(0, 0, 100, 50);
+
 ctx.translate(100, 10);
 ctx.translate(Infinity, 0.1);
 ctx.translate(-Infinity, 0.1);
@@ -26,8 +27,10 @@ ctx.translate(0.1, Infinity);
 ctx.translate(0.1, -Infinity);
 ctx.translate(0.1, NaN);
 ctx.translate(Infinity, Infinity);
+
 ctx.fillStyle = '#0f0';
 ctx.fillRect(-100, -10, 100, 50);
+
 _assertPixel(canvas, 50,25, 0,255,0,255);
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/html/canvas/tools/yaml/element/transformations.yaml b/tests/wpt/web-platform-tests/html/canvas/tools/yaml-new/transformations.yaml
index 876c48f849c..0d2265be7aa 100644
--- a/tests/wpt/web-platform-tests/html/canvas/tools/yaml/element/transformations.yaml
+++ b/tests/wpt/web-platform-tests/html/canvas/tools/yaml-new/transformations.yaml
@@ -44,8 +44,6 @@
     ctx.fillRect(0, 0, 100, 50);
     ctx.restore();
 
-    canvas.toDataURL();
-
     @assert pixel 50,25 == 0,255,0,255;
   expected: green
 
diff --git a/tests/wpt/web-platform-tests/html/canvas/tools/yaml/offscreen/transformations.yaml b/tests/wpt/web-platform-tests/html/canvas/tools/yaml/offscreen/transformations.yaml
deleted file mode 100644
index efc00222bfc..00000000000
--- a/tests/wpt/web-platform-tests/html/canvas/tools/yaml/offscreen/transformations.yaml
+++ /dev/null
@@ -1,320 +0,0 @@
-- name: 2d.transformation.order
-  desc: Transformations are applied in the right order
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.scale(2, 1);
-    ctx.rotate(Math.PI / 2);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, -50, 50, 50);
-    @assert pixel 75,25 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.scale.basic
-  desc: scale() works
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.scale(2, 4);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, 0, 50, 12.5);
-    @assert pixel 90,40 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.scale.zero
-  desc: scale() with a scale factor of zero works
-  code: |
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.save();
-    ctx.translate(50, 0);
-    ctx.scale(0, 1);
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.restore();
-    ctx.save();
-    ctx.translate(0, 25);
-    ctx.scale(1, 0);
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.restore();
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.scale.negative
-  desc: scale() with negative scale factors works
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.save();
-    ctx.scale(-1, 1);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(-50, 0, 50, 50);
-    ctx.restore();
-    ctx.save();
-    ctx.scale(1, -1);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(50, -50, 50, 50);
-    ctx.restore();
-    @assert pixel 25,25 == 0,255,0,255;
-    @assert pixel 75,25 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.scale.large
-  desc: scale() with large scale factors works
-  notes: Not really that large at all, but it hits the limits in Firefox.
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.scale(1e5, 1e5);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, 0, 1, 1);
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.scale.nonfinite
-  desc: scale() with Infinity/NaN is ignored
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.translate(100, 10);
-    @nonfinite ctx.scale(<0.1 Infinity -Infinity NaN>, <0.1 Infinity -Infinity NaN>);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(-100, -10, 100, 50);
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.scale.multiple
-  desc: Multiple scale()s combine
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.scale(Math.sqrt(2), Math.sqrt(2));
-    ctx.scale(Math.sqrt(2), Math.sqrt(2));
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, 0, 50, 25);
-    @assert pixel 90,40 == 0,255,0,255;
-    t.done();
-
-
-- name: 2d.transformation.rotate.zero
-  desc: rotate() by 0 does nothing
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.rotate(0);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, 0, 100, 50);
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.rotate.radians
-  desc: rotate() uses radians
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.rotate(Math.PI); // should fail obviously if this is 3.1 degrees
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(-100, -50, 100, 50);
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.rotate.direction
-  desc: rotate() is clockwise
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.rotate(Math.PI / 2);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, -100, 50, 100);
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.rotate.wrap
-  desc: rotate() wraps large positive values correctly
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.rotate(Math.PI * (1 + 4096)); // == pi (mod 2*pi)
-    // We need about pi +/- 0.001 in order to get correct-looking results
-    // 32-bit floats can store pi*4097 with precision 2^-10, so that should
-    // be safe enough on reasonable implementations
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(-100, -50, 100, 50);
-    @assert pixel 50,25 == 0,255,0,255;
-    @assert pixel 98,2 == 0,255,0,255;
-    @assert pixel 98,47 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.rotate.wrapnegative
-  desc: rotate() wraps large negative values correctly
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.rotate(-Math.PI * (1 + 4096));
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(-100, -50, 100, 50);
-    @assert pixel 50,25 == 0,255,0,255;
-    @assert pixel 98,2 == 0,255,0,255;
-    @assert pixel 98,47 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.rotate.nonfinite
-  desc: rotate() with Infinity/NaN is ignored
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.translate(100, 10);
-    @nonfinite ctx.rotate(<0.1 Infinity -Infinity NaN>);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(-100, -10, 100, 50);
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.translate.basic
-  desc: translate() works
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.translate(100, 50);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(-100, -50, 100, 50);
-    @assert pixel 90,40 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.translate.nonfinite
-  desc: translate() with Infinity/NaN is ignored
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.translate(100, 10);
-    @nonfinite ctx.translate(<0.1 Infinity -Infinity NaN>, <0.1 Infinity -Infinity NaN>);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(-100, -10, 100, 50);
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
-
-
-- name: 2d.transformation.transform.identity
-  desc: transform() with the identity matrix does nothing
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.transform(1,0, 0,1, 0,0);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, 0, 100, 50);
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.transform.skewed
-  desc: transform() with skewy matrix transforms correctly
-  code: |
-    // Create green with a red square ring inside it
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(20, 10, 60, 30);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(40, 20, 20, 10);
-    // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
-    ctx.transform(1,4, 2,3, 5,6);
-    // Post-transform coordinates:
-    //   [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]];
-    // Hence pre-transform coordinates:
-    var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2],
-             [-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2],
-             [-7.4,11.2]];
-    ctx.beginPath();
-    ctx.moveTo(pts[0][0], pts[0][1]);
-    for (var i = 0; i < pts.length; ++i)
-        ctx.lineTo(pts[i][0], pts[i][1]);
-    ctx.fill();
-    @assert pixel 21,11 == 0,255,0,255;
-    @assert pixel 79,11 == 0,255,0,255;
-    @assert pixel 21,39 == 0,255,0,255;
-    @assert pixel 79,39 == 0,255,0,255;
-    @assert pixel 39,19 == 0,255,0,255;
-    @assert pixel 61,19 == 0,255,0,255;
-    @assert pixel 39,31 == 0,255,0,255;
-    @assert pixel 61,31 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.transform.multiply
-  desc: transform() multiplies the CTM
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.transform(1,2, 3,4, 5,6);
-    ctx.transform(-2,1, 3/2,-1/2, 1,-2);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, 0, 100, 50);
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.transform.nonfinite
-  desc: transform() with Infinity/NaN is ignored
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.translate(100, 10);
-    @nonfinite ctx.transform(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(-100, -10, 100, 50);
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
-
-
-- name: 2d.transformation.setTransform.skewed
-  code: |
-    // Create green with a red square ring inside it
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(20, 10, 60, 30);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(40, 20, 20, 10);
-    // Draw a skewed shape to fill that gap, to make sure it is aligned correctly
-    ctx.setTransform(1,4, 2,3, 5,6);
-    // Post-transform coordinates:
-    //   [[20,10],[80,10],[80,40],[20,40],[20,10],[40,20],[40,30],[60,30],[60,20],[40,20],[20,10]];
-    // Hence pre-transform coordinates:
-    var pts=[[-7.4,11.2],[-43.4,59.2],[-31.4,53.2],[4.6,5.2],[-7.4,11.2],
-             [-15.4,25.2],[-11.4,23.2],[-23.4,39.2],[-27.4,41.2],[-15.4,25.2],
-             [-7.4,11.2]];
-    ctx.beginPath();
-    ctx.moveTo(pts[0][0], pts[0][1]);
-    for (var i = 0; i < pts.length; ++i)
-        ctx.lineTo(pts[i][0], pts[i][1]);
-    ctx.fill();
-    @assert pixel 21,11 == 0,255,0,255;
-    @assert pixel 79,11 == 0,255,0,255;
-    @assert pixel 21,39 == 0,255,0,255;
-    @assert pixel 79,39 == 0,255,0,255;
-    @assert pixel 39,19 == 0,255,0,255;
-    @assert pixel 61,19 == 0,255,0,255;
-    @assert pixel 39,31 == 0,255,0,255;
-    @assert pixel 61,31 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.setTransform.multiple
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.setTransform(1/2,0, 0,1/2, 0,0);
-    ctx.setTransform(2,0, 0,2, 0,0);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(0, 0, 50, 25);
-    @assert pixel 75,35 == 0,255,0,255;
-    t.done();
-
-- name: 2d.transformation.setTransform.nonfinite
-  desc: setTransform() with Infinity/NaN is ignored
-  code: |
-    ctx.fillStyle = '#f00';
-    ctx.fillRect(0, 0, 100, 50);
-    ctx.translate(100, 10);
-    @nonfinite ctx.setTransform(<0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>, <0 Infinity -Infinity NaN>);
-    ctx.fillStyle = '#0f0';
-    ctx.fillRect(-100, -10, 100, 50);
-    @assert pixel 50,25 == 0,255,0,255;
-    t.done();
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/the-selectmenu-element/selectmenu-form-elements.tentative.html b/tests/wpt/web-platform-tests/html/semantics/forms/the-selectmenu-element/selectmenu-form-elements.tentative.html
new file mode 100644
index 00000000000..eed098256ca
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/the-selectmenu-element/selectmenu-form-elements.tentative.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html lang="en">
+<title>HTMLSelectMenuElement Test: form.elements</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+
+<form id="form0">
+<selectmenu id="selectmenu0">
+  <option>one</option>
+  <option>two</option>
+  <option>three</option>
+</selectmenu>
+<form>
+
+<script>
+promise_test(async t => {
+  // TODO: Move test to /the-form-element/form-elements-filter.html once
+  // <selectmenu> becomes part of the HTML spec.
+  const formElements = document.querySelector("#form0").elements;
+  assert_equals(formElements.length, 1);
+  assert_equals(formElements[0].id, "selectmenu0");
+}, "Check that <selectmenu> is exposed in form.elements");
+</script>
diff --git a/tests/wpt/web-platform-tests/html/semantics/popovers/popover-attribute-basic.html b/tests/wpt/web-platform-tests/html/semantics/popovers/popover-attribute-basic.html
index 88051f57394..c5937cd3237 100644
--- a/tests/wpt/web-platform-tests/html/semantics/popovers/popover-attribute-basic.html
+++ b/tests/wpt/web-platform-tests/html/semantics/popovers/popover-attribute-basic.html
@@ -160,8 +160,8 @@ window.onload = () => {
       assert_false(popover.matches(':open'));
       popover.showPopover();
       assert_true(popover.matches(':open'));
-      popover.setAttribute('popover','manual');
     }
+    popover.setAttribute('popover','manual');
     assert_false(popover.matches(':open'));
     popover.showPopover();
     assert_true(popover.matches(':open'));
diff --git a/tests/wpt/web-platform-tests/html/semantics/popovers/popover-types.html b/tests/wpt/web-platform-tests/html/semantics/popovers/popover-types.html
index 615c5a818c0..9941f322828 100644
--- a/tests/wpt/web-platform-tests/html/semantics/popovers/popover-types.html
+++ b/tests/wpt/web-platform-tests/html/semantics/popovers/popover-types.html
@@ -5,35 +5,33 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 
-<div>
+<div id="container">
   <div popover>Popover</div>
   <div popover=manual>Async</div>
   <div popover=manual>Async</div>
-  <script>
-  {
-    const auto = document.currentScript.parentElement.querySelector('[popover=""]');
-    const manual = document.currentScript.parentElement.querySelectorAll('[popover=manual]')[0];
-    const manual2 = document.currentScript.parentElement.querySelectorAll('[popover=manual]')[1];
-    function assert_state_1(autoOpen,manualOpen,manual2Open) {
-      assert_equals(auto.matches(':open'),autoOpen,'auto open state is incorrect');
-      assert_equals(manual.matches(':open'),manualOpen,'manual open state is incorrect');
-      assert_equals(manual2.matches(':open'),manual2Open,'manual2 open state is incorrect');
-    }
-    test(() => {
-      assert_state_1(false,false,false);
-      auto.showPopover();
-      assert_state_1(true,false,false);
-      manual.showPopover();
-      assert_state_1(true,true,false);
-      manual2.showPopover();
-      assert_state_1(true,true,true);
-      auto.hidePopover();
-      assert_state_1(false,true,true);
-      manual.hidePopover();
-      assert_state_1(false,false,true);
-      manual2.hidePopover();
-      assert_state_1(false,false,false);
-    },'manuals do not close popovers');
-  }
-  </script>
 </div>
+<script>
+  const auto = container.querySelector('[popover=""]');
+  const manual = container.querySelectorAll('[popover=manual]')[0];
+  const manual2 = container.querySelectorAll('[popover=manual]')[1];
+  function assert_state_1(autoOpen,manualOpen,manual2Open) {
+    assert_equals(auto.matches(':open'),autoOpen,'auto open state is incorrect');
+    assert_equals(manual.matches(':open'),manualOpen,'manual open state is incorrect');
+    assert_equals(manual2.matches(':open'),manual2Open,'manual2 open state is incorrect');
+  }
+  test(() => {
+    assert_state_1(false,false,false);
+    auto.showPopover();
+    assert_state_1(true,false,false);
+    manual.showPopover();
+    assert_state_1(true,true,false);
+    manual2.showPopover();
+    assert_state_1(true,true,true);
+    auto.hidePopover();
+    assert_state_1(false,true,true);
+    manual.hidePopover();
+    assert_state_1(false,false,true);
+    manual2.hidePopover();
+    assert_state_1(false,false,false);
+  }, 'manuals do not close popovers');
+</script>
diff --git a/tests/wpt/web-platform-tests/html/semantics/popovers/resources/popover-utils.js b/tests/wpt/web-platform-tests/html/semantics/popovers/resources/popover-utils.js
index 9c6ba77549b..7eb9e6327a2 100644
--- a/tests/wpt/web-platform-tests/html/semantics/popovers/resources/popover-utils.js
+++ b/tests/wpt/web-platform-tests/html/semantics/popovers/resources/popover-utils.js
@@ -126,7 +126,7 @@ function assertPopoverVisibility(popover, isPopover, expectedVisibility, message
   } else {
     assert_equals(window.getComputedStyle(popover).display,'none',`${message}: Non-showing popovers should have display:none`);
     assert_false(popover.matches(':open'),`${message}: Non-showing popovers should *not* match :open`);
-    assert_true(popover.matches(':closed'),`${message}: Non-showing popovers should match :closed`);
+    assert_equals(popover.matches(':closed'),isPopover,`${message}: Non-showing popovers should match :closed`);
   }
 }
 
diff --git a/tests/wpt/web-platform-tests/images/cicp.png b/tests/wpt/web-platform-tests/images/cicp.png
new file mode 100644
index 00000000000..8fa0ce2123c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/images/cicp.png
diff --git a/tests/wpt/web-platform-tests/images/trns.png b/tests/wpt/web-platform-tests/images/trns.png
new file mode 100644
index 00000000000..4e309a89a8a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/images/trns.png
diff --git a/tests/wpt/web-platform-tests/inert/inert-computed-style.html b/tests/wpt/web-platform-tests/inert/inert-computed-style.html
index 3c1748de2b4..f1adbab6b7a 100644
--- a/tests/wpt/web-platform-tests/inert/inert-computed-style.html
+++ b/tests/wpt/web-platform-tests/inert/inert-computed-style.html
@@ -15,11 +15,11 @@
     left: 0;
     background-color: blue;
   }
-  #non-inert {
+  #nonInert {
     background-color: red;
   }
 </style>
-<div id="non-inert"></div>
+<div id="nonInert"></div>
 <div id="inert"></div>
 <script>
   test(function() {
@@ -32,17 +32,17 @@
     inert.inert = true;
     assert_equals(
       document.elementFromPoint(50, 50),
-      document.getElementById("non-inert"),
+      nonInert,
       "inert node is transparent to events (as pointer-events: none)",
     );
     assert_equals(
       getComputedStyle(inert).pointerEvents,
-      "auto",
+      getComputedStyle(nonInert).pointerEvents,
       "inert node doesn't change pointer-events computed value",
     );
     assert_equals(
       getComputedStyle(inert).userSelect,
-      "auto",
+      getComputedStyle(nonInert).userSelect,
       "inert node doesn't change user-select computed value",
     );
   });
diff --git a/tests/wpt/web-platform-tests/inert/inert-iframe-hittest.html b/tests/wpt/web-platform-tests/inert/inert-iframe-hittest.html
index bcc542d35ed..8d7facf1723 100644
--- a/tests/wpt/web-platform-tests/inert/inert-iframe-hittest.html
+++ b/tests/wpt/web-platform-tests/inert/inert-iframe-hittest.html
@@ -93,7 +93,6 @@ promise_test(async function() {
       "wrapper got enter and over events");
   }
 
-  assert_true(target.matches(":focus"), "target is focused");
   assert_true(target.matches(":active"), "target is active");
   assert_true(target.matches(":hover"), "target is hovered");
   assert_true(wrapper.matches(":hover"), "wrapper is hovered");
diff --git a/tests/wpt/web-platform-tests/infrastructure/assumptions/non-local-ports.sub.window.js b/tests/wpt/web-platform-tests/infrastructure/assumptions/non-local-ports.sub.window.js
index 8c9eb33c4f7..06ecb3ab21b 100644
--- a/tests/wpt/web-platform-tests/infrastructure/assumptions/non-local-ports.sub.window.js
+++ b/tests/wpt/web-platform-tests/infrastructure/assumptions/non-local-ports.sub.window.js
@@ -3,10 +3,10 @@
 // See the corresponding WPT RFC:
 // https://github.com/web-platform-tests/rfcs/blob/master/rfcs/address_space_overrides.md
 //
-// These ports are used to test the Private Network Access specification:
-// https://wicg.github.io/private-network-access/
+// These ports are used to test the Local Network Access specification:
+// https://wicg.github.io/local-network-access/
 //
-// More tests can be found in `fetch/private-network-access/`.
+// More tests can be found in `fetch/local-network-access/`.
 
 const alternatePorts = {
   httpPrivate:  "{{ports[http-private][0]}}",
diff --git a/tests/wpt/web-platform-tests/lint.ignore b/tests/wpt/web-platform-tests/lint.ignore
index 3b6106fbfc3..743986b66ee 100644
--- a/tests/wpt/web-platform-tests/lint.ignore
+++ b/tests/wpt/web-platform-tests/lint.ignore
@@ -834,8 +834,8 @@ TESTHARNESS-IN-OTHER-TYPE: svg/svg-in-svg/svg-in-svg-circular-filter-reference-c
 # Adding the testharnessreport.js script causes the test to never complete.
 MISSING-TESTHARNESSREPORT: accessibility/crashtests/computed-node-checked.html
 
-PRINT STATEMENT: webdriver/tests/print/printcmd.py
-PRINT STATEMENT: webdriver/tests/print/user_prompts.py
+PRINT STATEMENT: webdriver/tests/print/*
+PRINT STATEMENT: webdriver/tests/bidi/browsing_context/print/*
 
 DUPLICATE-BASENAME-PATH: acid/acid3/empty.html
 DUPLICATE-BASENAME-PATH: acid/acid3/empty.xml
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-basic.html b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-basic.html
index d289f0dd342..c6d3f8e32a2 100644
--- a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-basic.html
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-basic.html
@@ -29,6 +29,7 @@ promise_test(async t => {
         }));
     }, t);
 
+    assert_not_equals(entry, "timeout");
     assert_greater_than_equal(entry.renderStart - entry.startTime, segment_duration);
 }, 'A long busy wait split between a task and a requestAnimationFrame is a long animation frame');
 
@@ -47,6 +48,8 @@ promise_test(async t => {
             busy_wait(segment_duration);
         }).observe(element);
     }, t);
+
+    assert_not_equals(entry, "timeout");
     assert_greater_than_equal(entry.renderStart - entry.startTime, segment_duration);
     assert_greater_than_equal(entry.styleAndLayoutStart - entry.renderStart, segment_duration);
 }, 'ResizeObservers should create a long-frame and affect layoutStartTime');
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-desired-exec-time.html b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-desired-exec-time.html
new file mode 100644
index 00000000000..5fecb20fb40
--- /dev/null
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-desired-exec-time.html
@@ -0,0 +1,119 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Long Animation Frame Timing: queue time</title>
+<meta name="timeout" content="long">
+<script src=/resources/testdriver.js></script>
+<script src=/resources/testdriver-actions.js></script>
+<script src=/resources/testdriver-vendor.js></script>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/utils.js"></script>
+
+<body>
+<h1>Long Animation Frame: queue time</h1>
+<div id="log"></div>
+<script>
+
+promise_test(async t => {
+  const button = document.createElement("button");
+  button.innerText = "Click";
+  document.body.appendChild(button);
+  t.add_cleanup(() => button.remove());
+  const eventPromise = new Promise(resolve => button.addEventListener("click", event => {
+    busy_wait();
+    resolve(event);
+  }));
+  const entryPromise = new Promise(resolve => new PerformanceObserver(
+    (entryList, observer) => {
+      const scriptPredicate = s => s.name === "BUTTON.onclick";
+      const entry = entryList.getEntries().find(
+        e => e.scripts.length && e.scripts.find(scriptPredicate));
+      if (entry) {
+        resolve([entry, entry.scripts.find(scriptPredicate)]);
+        observer.disconnect();
+      }
+    }).observe({entryTypes: ["long-animation-frame"]}));
+  test_driver.click(button);
+  await new Promise(resolve => t.step_timeout(resolve, 0));
+  const event = await eventPromise;
+  const [entry, script] = await entryPromise;
+  assert_equals(script.desiredExecutionStart, event.timeStamp);
+}, "event-listener entries desiredExecutionStart is the eventTimestamp");
+
+promise_test(async t => {
+  const entryPromise = loaf_promise(t);
+  let timeBeforeSetup, timeAfterSetup;
+  const delay = 100;
+  const timeoutPromise = new Promise(resolve => {
+    timeBeforeSetup = performance.now();
+    t.step_timeout(() => {
+      busy_wait();
+      resolve();
+    }, delay);
+    timeAfterSetup = performance.now();
+  });
+  const entry = await entryPromise;
+  const script = entry.scripts.find(s => s.name === "Window.setTimeout");
+  assert_greater_than_equal(script.desiredExecutionStart, timeBeforeSetup + delay);
+  assert_less_than_equal(script.desiredExecutionStart, timeAfterSetup + delay);
+}, "desiredExecutionStart for setTimeout should be the setup time + delay");
+
+promise_test(async t => {
+  const entryPromise = loaf_promise(t);
+  let timeBeforeSetup, timeAfterSetup;
+  const timeoutPromise = new Promise(resolve => {
+    timeBeforeSetup = performance.now();
+   scheduler.postTask(t.step_func(() => {
+      busy_wait();
+      resolve();
+    }));
+    timeAfterSetup = performance.now();
+  });
+  const entry = await entryPromise;
+  const script = entry.scripts.find(s => s.name === "Scheduler.postTask");
+  assert_greater_than_equal(script.desiredExecutionStart, timeBeforeSetup);
+  assert_less_than_equal(script.desiredExecutionStart, timeAfterSetup);
+}, "desiredExecutionStart for Scheduler.postTask should be the time it was called");
+
+promise_test(async t => {
+  const entryPromise = loaf_promise(t);
+  const rafPromise = new Promise(resolve => {
+    // We fire two rAFs to ensure both of them receive the same
+    // desiredExecutionStart
+    requestAnimationFrame(rafTime => {
+      busy_wait();
+    })
+    requestAnimationFrame(rafTime => {
+      busy_wait();
+      resolve(rafTime);
+    })
+  });
+  const entry = await entryPromise;
+  const rafTime = await rafPromise;
+  const scripts = entry.scripts.filter(
+    s => s.name === "Window.requestAnimationFrame");
+  for (const script of scripts) {
+    assert_less_than_equal(Math.abs(script.desiredExecutionStart - rafTime), 1);
+  }
+  assert_less_than_equal(Math.abs(entry.desiredRenderStart - rafTime), 1);
+}, "desiredExecutionStart & desiredRenderStart for requestAnimationFrame " +
+   "should be the same as the rAF argument");
+
+promise_test(async t => {
+  const entryPromise = loaf_promise(t);
+  const timeBeforeWait = performance.now();
+  let timeAfterWait;
+  const rafPromise = new Promise(resolve => t.step_timeout(() => {
+    requestAnimationFrame(rafTime => {
+      busy_wait(very_long_frame_duration / 2);
+      resolve(rafTime);
+    });
+
+    busy_wait(very_long_frame_duration / 2);
+    timeAfterWait = performance.now();
+  }), 0);
+  const [entry, rafTime] = await Promise.all([entryPromise, rafPromise]);
+  assert_less_than_equal(Math.abs(entry.desiredRenderStart - rafTime), 1);
+}, "desiredRenderStart and renderStart should reflect main thread delays");
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-event-listener.html b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-event-listener.html
new file mode 100644
index 00000000000..6349c28b320
--- /dev/null
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-event-listener.html
@@ -0,0 +1,33 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Long Animation Frame Timing: basic</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/utils.js"></script>
+
+<body>
+<h1>Long Animation Frame: event handlers</h1>
+<div id="log"></div>
+<script>
+
+test_self_event_listener(t => {
+    const img = document.createElement("img");
+    img.src = "/images/green.png";
+    img.addEventListener("load", () => {
+        busy_wait();
+    });
+    document.body.appendChild(img);
+    t.add_cleanup(() => img.remove());
+}, "IMG.onload");
+
+test_self_event_listener(t => {
+    const xhr = new XMLHttpRequest();
+    xhr.open("GET", "/common/dummy.xml");
+    xhr.addEventListener("load", () => {
+        busy_wait();
+    });
+    xhr.send();
+}, "XMLHttpRequest.onload");
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-idle.html b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-idle.html
new file mode 100644
index 00000000000..bc9f910bb14
--- /dev/null
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-idle.html
@@ -0,0 +1,36 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Long Animation Frame Timing: requestIdleCallback</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/utils.js"></script>
+
+<body>
+<h1>Long Animation Frame: requestIdleCallback</h1>
+<div id="log"></div>
+<script>
+setup(() =>
+  assert_implements(window.requestIdleCallback,
+    'requestIdleCallback is not supported.'));
+
+/*
+promise_test(async t => {
+    await expect_no_long_frame(() => requestIdleCallback(busy_wait), t);
+}, 'A long busy wait in an idle callback is not a long animation frame');
+*/
+
+promise_test(async t => {
+    const segment_duration = very_long_frame_duration / 2;
+    requestIdleCallback(() => {
+        busy_wait(segment_duration);
+        requestAnimationFrame(() => {
+            busy_wait(segment_duration);
+        });
+    });
+    await expect_long_frame(() => {}, t);
+}, 'A long busy wait split between an idle callback and a ' +
+   'requestAnimationFrame is a long animation frame');
+
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-iframe-popup.html b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-iframe-popup.html
index 83def572998..565273b6c6a 100644
--- a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-iframe-popup.html
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-iframe-popup.html
@@ -15,7 +15,7 @@ const host_info = get_host_info();
 const {ORIGIN, REMOTE_ORIGIN, HTTP_NOTSAMESITE_ORIGIN} = host_info;
 
 promise_test(async t => {
-    const executor = await prepare_exec_iframe(t, ORIGIN);
+    const [executor] = await prepare_exec_iframe(t, ORIGIN);
     await expect_no_long_frame(() => executor.execute_script((duration) => {
         const deadline = performance.now() + duration;
         while (performance.now() < deadline) {}
@@ -23,7 +23,7 @@ promise_test(async t => {
 }, 'A long busy wait without render in a same-origin iframe is not a long animation frame');
 
 promise_test(async t => {
-    const executor = await prepare_exec_iframe(t, HTTP_NOTSAMESITE_ORIGIN);
+    const [executor] = await prepare_exec_iframe(t, HTTP_NOTSAMESITE_ORIGIN);
     await expect_no_long_frame(() => executor.execute_script((duration) => {
         const deadline = performance.now() + duration;
         while (performance.now() < deadline) {}
@@ -31,7 +31,7 @@ promise_test(async t => {
 }, 'A long busy wait in a cross-origin iframe is not a long animation frame');
 
 promise_test(async t => {
-    const executor = await prepare_exec_iframe(t, ORIGIN);
+    const [executor] = await prepare_exec_iframe(t, ORIGIN);
     await expect_long_frame(() => executor.execute_script(async (duration) => {
         await new Promise(resolve => window.requestAnimationFrame(resolve));
         const deadline = performance.now() + duration;
@@ -40,7 +40,7 @@ promise_test(async t => {
 }, 'A long busy wait in a same-origin requestAnimationFrame is a long animation frame');
 
 promise_test(async t => {
-    const executor = await prepare_exec_popup(t, ORIGIN);
+    const [executor] = await prepare_exec_popup(t, ORIGIN);
     await expect_no_long_frame(() => executor.execute_script((duration) => {
         const deadline = performance.now() + duration;
         while (performance.now() < deadline) {}
@@ -49,7 +49,7 @@ promise_test(async t => {
 
 for (const origin of ["ORIGIN", "REMOTE_ORIGIN", "HTTP_NOTSAMESITE_ORIGIN"]) {
     promise_test(async t => {
-        const executor = await prepare_exec_iframe(t, host_info[origin]);
+        const [executor] = await prepare_exec_iframe(t, host_info[origin]);
         const entry = await executor.execute_script(async (duration) => {
             const entryPromise = new Promise(resolve => new PerformanceObserver(list => {
                 resolve(list.getEntries(0));
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-promise.html b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-promise.html
new file mode 100644
index 00000000000..226d06a8303
--- /dev/null
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-promise.html
@@ -0,0 +1,52 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Long Animation Frame Timing: basic</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
+<script src="resources/utils.js"></script>
+
+<body>
+<h1>Long Animation Frame: promise resolvers</h1>
+<div id="log"></div>
+<script type="module">
+
+const {REMOTE_ORIGIN} = get_host_info();
+
+test_promise_script(async t => {
+    await fetch("/common/dummy.xml");
+    busy_wait(very_long_frame_duration);
+}, "resolve", "Window.fetch.then");
+
+test_promise_script(async t => {
+    const response = await fetch("/common/dummy.xml");
+    await response.text();
+    busy_wait(very_long_frame_duration);
+}, "resolve", "Response.text.then");
+
+test_promise_script(async t => {
+    const response = await fetch("/common/dummy.xml");
+    await response.arrayBuffer();
+    busy_wait(very_long_frame_duration);
+}, "resolve", "Response.arrayBuffer.then");
+
+test_promise_script(async t => {
+    const response = await fetch("/fetch/api/resources/data.json");
+    await response.json();
+    busy_wait(very_long_frame_duration);
+}, "resolve", "Response.json.then");
+
+test_promise_script(async t => {
+    const response = await import("/loading/resources/dummy.js");
+    busy_wait(very_long_frame_duration);
+}, "resolve", "import.then");
+
+test_promise_script(async t => {
+    fetch(new URL("/common/dummy.xml", REMOTE_ORIGIN).href, {mode: "cors"})
+        .catch(() => {
+            busy_wait(very_long_frame_duration);
+        })
+}, "reject", "Window.fetch.catch" );
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-script-block.html b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-script-block.html
new file mode 100644
index 00000000000..f896a737ce7
--- /dev/null
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-script-block.html
@@ -0,0 +1,47 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Long Animation Frame Timing: basic</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/utils.js"></script>
+
+<body>
+<h1>Long Animation Frame: script blocks</h1>
+<div id="log"></div>
+<script>
+test_self_script_block(t => {
+    const script = document.createElement("script");
+    script.innerHTML = `(${busy_wait.toString()})()`;
+    document.body.appendChild(script);
+}, location.href, "classic-script");
+
+test_self_script_block(t => {
+    const script = document.createElement("script");
+    script.type = "module";
+    script.innerHTML = `(${busy_wait.toString()})()`;
+    document.body.appendChild(script);
+}, location.href, "module-script");
+
+test_self_script_block(t => {
+    const script = document.createElement("script");
+    script.src = "resources/busy.js";
+    document.body.appendChild(script);
+}, new URL("resources/busy.js", location.href).href, "classic-script");
+
+test_self_script_block(t => {
+    const script = document.createElement("script");
+    script.src = "resources/busy.js";
+    script.type = "module";
+    document.body.appendChild(script);
+}, new URL("resources/busy.js", location.href).href, "module-script");
+
+test_self_script_block(t => {
+    const script = document.createElement("script");
+    script.type = "module";
+    script.innerHTML = `import("./resources/busy.js?import");`;
+    document.body.appendChild(script);
+}, new URL("resources/busy.js?import", location.href).href, "execute-script");
+
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-script-window-attribution.html b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-script-window-attribution.html
new file mode 100644
index 00000000000..001bb537f79
--- /dev/null
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-script-window-attribution.html
@@ -0,0 +1,62 @@
+
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Long Animation Frame Timing: window attribution</title>
+<meta name="timeout" content="long">
+<body>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
+<script src="/common/utils.js"></script>
+<script src="/common/dispatcher/dispatcher.js"></script>
+<script src="resources/utils.js"></script>
+<div id="log"></div>
+<script>
+
+const host_info = get_host_info();
+const {ORIGIN, REMOTE_ORIGIN, HTTP_NOTSAMESITE_ORIGIN} = host_info;
+
+promise_test (async t => {
+  const [entry, script] = await expect_long_frame_with_script(() => {
+    requestAnimationFrame(() => busy_wait());
+  }, () => true, t);
+  assert_equals(script.windowAttribution, "self");
+  assert_equals(script.window, window);
+}, 'Scripts in this window should be self-attributed');
+
+promise_test (async t => {
+    const [executor, iframe] = await prepare_exec_iframe(t, ORIGIN);
+    const [entry, script] = await expect_long_frame_with_script(() =>
+      executor.execute_script(async (duration) => {
+        await new Promise(resolve => window.requestAnimationFrame(resolve));
+        const deadline = performance.now() + duration;
+        while (performance.now() < deadline) {}
+      }, [very_long_frame_duration]), () => true, t);
+    assert_equals(script.windowAttribution, "descendant");
+    assert_equals(script.window, iframe.contentWindow);
+}, 'Scripts in subframes should be descendant-attributed');
+
+promise_test (async t => {
+    const [executor1, iframe1] = await prepare_exec_iframe(t, ORIGIN);
+    const [executor2, iframe2] = await prepare_exec_iframe(t, ORIGIN);
+    const [entry, script] = await expect_long_frame_with_script(() =>
+      executor1.execute_script(async (duration) => {
+        await new Promise(resolve => window.requestAnimationFrame(resolve));
+        const deadline = performance.now() + duration;
+        while (performance.now() < deadline) {}
+      }, [very_long_frame_duration]), () => true, t);
+    const find_entry = win =>
+      win.performance.getEntriesByType("long-animation-frame").find(
+        e => e.duration >= very_long_frame_duration &&
+             e.scripts.length).scripts[0];
+
+    const iframe1_entry = find_entry(iframe1.contentWindow);
+    const iframe2_entry = find_entry(iframe2.contentWindow);
+    assert_equals(iframe1_entry.windowAttribution, "self");
+    assert_equals(iframe2_entry.windowAttribution, "same-page");
+    assert_equals(iframe1_entry.window, iframe1.contentWindow);
+    assert_equals(iframe2_entry.window, iframe1.contentWindow);
+}, 'Scripts in subframes should be same-page-attributed to other subframes');
+
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-supportedEntryTypes.html b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-supportedEntryTypes.html
new file mode 100644
index 00000000000..efa01481fa1
--- /dev/null
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-supportedEntryTypes.html
@@ -0,0 +1,22 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Long Animation Frame Timing: supportedEntryTypes</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+<h1>Long Animation Frame: supportedEntryTypes</h1>
+<div id="log"></div>
+<script>
+
+setup(() =>
+  assert_implements(window.PerformanceLongAnimationFrameTiming,
+    'Long animation frames are not supported.'));
+
+test(() => {
+  assert_true(PerformanceObserver.supportedEntryTypes.includes("long-animation-frame"));
+}, 'supportedEntryTypes should include long-animation-frame');
+
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-user-callback.html b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-user-callback.html
new file mode 100644
index 00000000000..bc8fdd05e10
--- /dev/null
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-user-callback.html
@@ -0,0 +1,52 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>Long Animation Frame Timing: basic</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/utils.js"></script>
+
+<body>
+<h1>Long Animation Frame: user callbacks</h1>
+<div id="log"></div>
+<script>
+
+
+test_self_user_callback(t =>
+    t.step_timeout(() => busy_wait()), "Window.setTimeout");
+
+test_self_user_callback(() => {
+    const interval = setInterval(() => {
+        busy_wait();
+        clearInterval(interval);
+    }, 10);
+}, "Window.setInterval");
+test_self_user_callback(() =>
+    requestAnimationFrame(() => busy_wait()), "Window.requestAnimationFrame");
+
+test_self_user_callback(t => {
+    const element = document.createElement("div");
+        document.body.appendChild(element);
+        t.add_cleanup(() => element.remove());
+        new ResizeObserver((entries, observer) => {
+            busy_wait(very_long_frame_duration);
+            observer.disconnect();
+        }).observe(element);
+}, "ResizeObserver.callback");
+
+test_self_user_callback(t => {
+    const element = document.createElement("div");
+    element.innerText = "123";
+    t.add_cleanup(() => element.remove());
+    new IntersectionObserver((entries, observer) => {
+        busy_wait(very_long_frame_duration);
+        observer.disconnect();
+    }).observe(element);
+    document.body.appendChild(element);
+}, "IntersectionObserver.callback");
+
+test_self_user_callback(t =>
+    scheduler.postTask(() => busy_wait()), "Scheduler.postTask");
+
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-window-only.worker.js b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-window-only.worker.js
new file mode 100644
index 00000000000..c1f0439c4bd
--- /dev/null
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/loaf-window-only.worker.js
@@ -0,0 +1,11 @@
+importScripts("/resources/testharness.js");
+
+test(() => {
+  assert_false(PerformanceObserver.supportedEntryTypes.includes("long-animation-frame"));
+}, 'PerformanceObserver should not include "long-animation-frame" in workers');
+
+test(() => {
+  assert_false("PerformanceLongAnimationFrameTiming" in self);
+}, 'PerformanceLongAnimationFrameTiming should not be exposed in workers');
+
+done();
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/resources/busy.js b/tests/wpt/web-platform-tests/long-animation-frame/tentative/resources/busy.js
new file mode 100644
index 00000000000..9d761b6de5e
--- /dev/null
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/resources/busy.js
@@ -0,0 +1,4 @@
+(() => {
+  const deadline = performance.now() + 360;
+  while (performance.now() < deadline) {}
+})();
diff --git a/tests/wpt/web-platform-tests/long-animation-frame/tentative/resources/utils.js b/tests/wpt/web-platform-tests/long-animation-frame/tentative/resources/utils.js
index 47c138b1e62..3a121a5a9b5 100644
--- a/tests/wpt/web-platform-tests/long-animation-frame/tentative/resources/utils.js
+++ b/tests/wpt/web-platform-tests/long-animation-frame/tentative/resources/utils.js
@@ -5,14 +5,18 @@ setup(() =>
 
 const very_long_frame_duration = 360;
 
-function loaf_promise() {
+function loaf_promise(t) {
   return new Promise(resolve => {
       const observer = new PerformanceObserver(entries => {
           const entry = entries.getEntries()[0];
-          if (entry.duration >= very_long_frame_duration)
+          if (entry.duration >= very_long_frame_duration) {
+            observer.disconnect();
             resolve(entry);
+          }
       });
 
+      t.add_cleanup(() => observer.disconnect());
+
       observer.observe({entryTypes: ['long-animation-frame']});
   });
 }
@@ -28,9 +32,9 @@ async function expect_long_frame(cb, t) {
   await windowLoaded;
   await new Promise(resolve => t.step_timeout(resolve, 0));
   const timeout = new Promise((resolve, reject) =>
-    t.step_timeout(() => reject("timeout"), no_long_frame_timeout));
-  const receivedLongFrame = loaf_promise();
-  await cb();
+    t.step_timeout(() => resolve("timeout"), no_long_frame_timeout));
+  const receivedLongFrame = loaf_promise(t);
+  await cb(t);
   const entry = await Promise.race([
     receivedLongFrame,
     timeout
@@ -38,10 +42,24 @@ async function expect_long_frame(cb, t) {
   return entry;
 }
 
+async function expect_long_frame_with_script(cb, predicate, t) {
+  for (let i = 0; i < 10; ++i) {
+      const entry = await expect_long_frame(cb, t);
+      if (entry === "timeout" || !entry.scripts.length)
+        continue;
+      for (const script of entry.scripts) {
+        if (predicate(script))
+          return [entry, script];
+      }
+  }
+
+  return [];
+}
+
 async function expect_no_long_frame(cb, t) {
   await windowLoaded;
   for (let i = 0; i < 5; ++i) {
-    const receivedLongFrame = loaf_promise();
+    const receivedLongFrame = loaf_promise(t);
     await cb();
     const result = await Promise.race([receivedLongFrame,
         new Promise(resolve => t.step_timeout(() => resolve("timeout"),
@@ -62,7 +80,7 @@ async function prepare_exec_iframe(t, origin) {
   iframe.src = url.href;
   document.body.appendChild(iframe);
   await new Promise(resolve => iframe.addEventListener("load", resolve));
-  return new RemoteContext(uuid);
+  return [new RemoteContext(uuid), iframe];
 }
 
 
@@ -72,5 +90,38 @@ async function prepare_exec_popup(t, origin) {
   url.searchParams.set("uuid", uuid);
   const popup = window.open(url);
   t.add_cleanup(() => popup.close());
-  return new RemoteContext(uuid);
+  return [new RemoteContext(uuid), popup];
+}
+function test_loaf_script(cb, name, type, label) {
+  promise_test(async t => {
+    const [entry, script] = await expect_long_frame_with_script(cb,
+        script => (script.type === type && script.duration >= very_long_frame_duration), t);
+
+    assert_true(!!entry, "Entry detected");
+    assert_equals(script.name, name);
+    assert_greater_than_equal(script.duration, very_long_frame_duration);
+    assert_greater_than_equal(entry.duration, script.duration);
+    assert_greater_than_equal(script.executionStart, script.startTime);
+    assert_greater_than_equal(script.startTime, entry.startTime)
+    assert_equals(script.window, window);
+    assert_equals(script.forcedStyleAndLayoutDuration, 0);
+    assert_equals(script.windowAttribution, "self");
+}, `LoAF script: ${name} ${type},${label ? ` ${label}` : ''}`);
+
+}
+
+function test_self_user_callback(cb, name) {
+    test_loaf_script(cb, name, "user-callback");
+}
+
+function test_self_event_listener(cb, name) {
+  test_loaf_script(cb, name, "event-listener");
+}
+
+function test_promise_script(cb, resolve_or_reject, name, label) {
+  test_loaf_script(cb, name, `${resolve_or_reject}-promise`, label);
+}
+
+function test_self_script_block(cb, name, type) {
+  test_loaf_script(cb, name, type);
 }
diff --git a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-raf.html b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-raf.html
index d65f8928186..169843a7423 100644
--- a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-raf.html
+++ b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-raf.html
@@ -1,46 +1,52 @@
 <!DOCTYPE HTML>
-<meta charset=utf-8>
-<title>LongTask Timing: long task in rAF</title>
+<head>
+  <meta charset=utf-8>
+  <title>LongTask Timing: long task in rAF</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script src="resources/utils.js"></script>
+</head>
 <body>
+  <h1>Long Task: requestAnimationFrame</h1>
+  <div id="log"></div>
+  <script>
+    promise_test(async () => {
+      assert_implements(window.PerformanceLongTaskTiming, 'Longtasks are not supported.');
+      await new Promise(resolve => {
+        window.addEventListener('load', resolve);
+      });
 
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="resources/utils.js"></script>
+      let entries = await new Promise(resolve => {
+        new PerformanceObserver(
+          entryList => {
+            const entries = entryList.getEntries().filter(
+              e => e.name == 'self' && e.attribution[0].containerType == 'window');
+            if (entries) {
+              resolve(entries);
+            }
+          }).observe({ entryTypes: ['longtask'] });
 
-<h1>Long Task: requestAnimationFrame</h1>
-<div id="log"></div>
-<script>
-  async_test(function (t) {
-    assert_implements(window.PerformanceLongTaskTiming, 'Longtasks are not supported.');
-    const observer = new PerformanceObserver(
-        t.step_func(function (entryList) {
-            const entries = entryList.getEntries();
-            assert_equals(entries.length, 1,
-                'Exactly one entry is expected.');
-            const longtask = entries[0];
-            checkLongTaskEntry(longtask);
-            // Assert the TaskAttributionTiming entry in attribution.
-            assert_equals(longtask.attribution.length, 1,
-                'Exactly one attribution entry is expected');
-            const attribution = longtask.attribution[0];
-            assert_equals(attribution.entryType, 'taskattribution');
-            assert_equals(attribution.name, 'unknown');
-            assert_equals(attribution.duration, 0);
-            assert_equals(attribution.startTime, 0);
-            assert_equals(attribution.containerType, 'window');
-            assert_equals(attribution.containerId, '');
-            assert_equals(attribution.containerName, '');
-            assert_equals(attribution.containerSrc, '');
-            observer.disconnect();
-            t.done();
-        })
-    );
-    observer.observe({entryTypes: ['longtask']});
-    window.onload = () => {
         const script = document.createElement('script');
         script.src = 'resources/raflongtask.js';
         document.body.appendChild(script);
-    };
-}, 'Performance longtask entries are observable.');
-</script>
+      });
+
+      assert_equals(entries.length, 1,
+        'Exactly one entry is expected.');
+      const longtask = entries[0];
+      checkLongTaskEntry(longtask);
+      // Assert the TaskAttributionTiming entry in attribution.
+      assert_equals(longtask.attribution.length, 1,
+        'Exactly one attribution entry is expected');
+      const attribution = longtask.attribution[0];
+      assert_equals(attribution.entryType, 'taskattribution');
+      assert_equals(attribution.name, 'unknown');
+      assert_equals(attribution.duration, 0);
+      assert_equals(attribution.startTime, 0);
+      assert_equals(attribution.containerType, 'window');
+      assert_equals(attribution.containerId, '');
+      assert_equals(attribution.containerName, '');
+      assert_equals(attribution.containerSrc, '');
+    }, 'Performance longtask entries are observable.');
+  </script>
 </body>
diff --git a/tests/wpt/web-platform-tests/longtask-timing/resources/utils.js b/tests/wpt/web-platform-tests/longtask-timing/resources/utils.js
index 36bd6c7bc28..7bb37bab32c 100644
--- a/tests/wpt/web-platform-tests/longtask-timing/resources/utils.js
+++ b/tests/wpt/web-platform-tests/longtask-timing/resources/utils.js
@@ -1,11 +1,11 @@
-function checkLongTaskEntry(longtask, name='self') {
-  assert_equals(longtask.entryType, 'longtask');
-  assert_equals(longtask.name, name);
-  assert_true(Number.isInteger(longtask.duration));
-  assert_greater_than_equal(longtask.duration, 50);
-  assert_greater_than_equal(longtask.startTime, 0);
+function checkLongTaskEntry(longtask, name = 'self') {
+  assert_equals(longtask.entryType, 'longtask', 'The entryType should be longtask');
+  assert_equals(longtask.name, name, 'Name should be ' + name + '.');
+  assert_true(Number.isInteger(longtask.duration, 'The duration should be an integer.'));
+  assert_greater_than_equal(longtask.duration, 50, 'The Duration should be greater than or equal to 50.');
+  assert_greater_than_equal(longtask.startTime, 0, 'The startTime should be greater than or equal to 0.');
   const currentTime = performance.now();
-  assert_less_than_equal(longtask.startTime, currentTime);
+  assert_less_than_equal(longtask.startTime, currentTime, 'The startTime should be less than or equal to current time.');
 }
 
 function hasUnrelatedTaskName(taskName, expectedTaskName) {
diff --git a/tests/wpt/web-platform-tests/mediacapture-record/MediaRecorder-pause-resume.html b/tests/wpt/web-platform-tests/mediacapture-record/MediaRecorder-pause-resume.html
index a1495dcb0c7..84efe52e06b 100644
--- a/tests/wpt/web-platform-tests/mediacapture-record/MediaRecorder-pause-resume.html
+++ b/tests/wpt/web-platform-tests/mediacapture-record/MediaRecorder-pause-resume.html
@@ -57,10 +57,11 @@
             "Should have gotten expected events");
     }, "MediaRecorder handles pause() and resume() calls appropriately in state and events");
 
-    promise_test(async () => {
-        let video = createVideoStream();
-        let recorder = new MediaRecorder(video);
-        let events = recordEvents(recorder,
+    promise_test(async t => {
+        const {stream: video, control} = createVideoStream(t);
+        control.addVideoFrame();
+        const recorder = new MediaRecorder(video);
+        const events = recordEvents(recorder,
             ["start", "stop", "dataavailable", "pause", "resume", "error"]);
 
         recorder.start();
diff --git a/tests/wpt/web-platform-tests/navigation-api/navigate-event/navigation-traverseTo-in-iframe-same-document-preventDefault.html b/tests/wpt/web-platform-tests/navigation-api/navigate-event/navigation-traverseTo-in-iframe-same-document-preventDefault.html
index d68b11fa7cc..463746e8f79 100644
--- a/tests/wpt/web-platform-tests/navigation-api/navigate-event/navigation-traverseTo-in-iframe-same-document-preventDefault.html
+++ b/tests/wpt/web-platform-tests/navigation-api/navigate-event/navigation-traverseTo-in-iframe-same-document-preventDefault.html
@@ -27,12 +27,9 @@ promise_test(async t => {
     assert_equals(e.filename, location.href);
     top_navigateerror_fired = true;
   });
-  let iframe_navigateerror_fired = false;
-  i.contentWindow.navigation.onnavigateerror = t.step_func(e => {
-    assert_equals(e.constructor, i.contentWindow.ErrorEvent);
-    assert_equals(e.filename, i.contentWindow.location.href);
-    iframe_navigateerror_fired = true;
-  });
+
+  i.contentWindow.navigation.onnavigate = t.unreached_func("navigate event should not fire in the iframe, because the traversal was cancelled in the top window");
+  i.contentWindow.navigation.onnavigateerror = t.unreached_func("navigateerror event should not fire in the iframe, because the navigate event was not fired");
 
   // When the top window blocks the traversal, it should be blocked in the
   // iframe as well, and the traversal promises in the iframe should be rejected.
@@ -40,7 +37,6 @@ promise_test(async t => {
   const iDOMException = iWindow.DOMException;
   await assertBothRejectDOM(t, i.contentWindow.navigation.traverseTo(i.contentWindow.navigation.entries()[0].key), "AbortError", iWindow, iDOMException);
   assert_true(top_navigateerror_fired);
-  assert_true(iframe_navigateerror_fired);
   assert_equals(navigation.currentEntry.index, 1);
   assert_equals(i.contentWindow.navigation.currentEntry.index, 1);
 }, "navigation.traverseTo() in an iframe with same-document preventDefault in its parent");
diff --git a/tests/wpt/web-platform-tests/navigation-api/navigation-methods/return-value/traverseTo-detach-cross-document-before-navigate-event.html b/tests/wpt/web-platform-tests/navigation-api/navigation-methods/return-value/traverseTo-detach-cross-document-before-navigate-event.html
new file mode 100644
index 00000000000..ed319f62239
--- /dev/null
+++ b/tests/wpt/web-platform-tests/navigation-api/navigation-methods/return-value/traverseTo-detach-cross-document-before-navigate-event.html
@@ -0,0 +1,32 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/helpers.js"></script>
+
+<iframe id="i" src="/common/blank.html"></iframe>
+
+<script>
+promise_test(async t => {
+  // Wait for after the load event so that the navigation doesn't get converted
+  // into a replace navigation.
+  await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0));
+
+  assert_equals(i.contentWindow.navigation.entries().length, 1);
+  let key = i.contentWindow.navigation.currentEntry.key;
+
+  i.contentWindow.navigation.navigate("?1");
+  await new Promise(resolve => i.onload = resolve);
+
+  assert_equals(i.contentWindow.navigation.entries().length, 2);
+  assert_equals(i.contentWindow.navigation.currentEntry, i.contentWindow.navigation.entries()[1]);
+
+  const iWindow = i.contentWindow;
+  const iDOMException = iWindow.DOMException;
+  i.contentWindow.navigation.onnavigate = t.unreached_func("navigate should not fire");
+  i.contentWindow.navigation.onnavigateerror = t.unreached_func("navigateerror should not fire");
+
+  let promises = i.contentWindow.navigation.traverseTo(key);
+  i.remove();
+  await assertBothRejectDOM(t, promises, "AbortError", iWindow, iDOMException);
+}, "traverseTo() promise rejections when detaching an iframe before onnavigate (cross-document)");
+</script>
diff --git a/tests/wpt/web-platform-tests/navigation-api/navigation-methods/return-value/traverseTo-detach-same-document-before-navigate-event.html b/tests/wpt/web-platform-tests/navigation-api/navigation-methods/return-value/traverseTo-detach-same-document-before-navigate-event.html
new file mode 100644
index 00000000000..592ac6f1990
--- /dev/null
+++ b/tests/wpt/web-platform-tests/navigation-api/navigation-methods/return-value/traverseTo-detach-same-document-before-navigate-event.html
@@ -0,0 +1,31 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/helpers.js"></script>
+
+<iframe id="i" src="/common/blank.html"></iframe>
+
+<script>
+promise_test(async t => {
+  // Wait for after the load event so that the navigation doesn't get converted
+  // into a replace navigation.
+  await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0));
+
+  assert_equals(i.contentWindow.navigation.entries().length, 1);
+  let key = i.contentWindow.navigation.currentEntry.key;
+
+  await i.contentWindow.navigation.navigate("#1").committed;
+
+  assert_equals(i.contentWindow.navigation.entries().length, 2);
+  assert_equals(i.contentWindow.navigation.currentEntry, i.contentWindow.navigation.entries()[1]);
+
+  const iWindow = i.contentWindow;
+  const iDOMException = iWindow.DOMException;
+  i.contentWindow.navigation.onnavigate = t.unreached_func("navigate should not fire");
+  i.contentWindow.navigation.onnavigateerror = t.unreached_func("navigateerror should not fire");
+
+  let promises = i.contentWindow.navigation.traverseTo(key);
+  i.remove();
+  await assertBothRejectDOM(t, promises, "AbortError", iWindow, iDOMException);
+}, "traverseTo() promise rejections when detaching an iframe before onnavigate (same-document)");
+</script>
diff --git a/tests/wpt/web-platform-tests/navigation-api/navigation-methods/sandboxing-back-parent.html b/tests/wpt/web-platform-tests/navigation-api/navigation-methods/sandboxing-back-parent.html
index bc3d4e2e9fb..6eee3f917cd 100644
--- a/tests/wpt/web-platform-tests/navigation-api/navigation-methods/sandboxing-back-parent.html
+++ b/tests/wpt/web-platform-tests/navigation-api/navigation-methods/sandboxing-back-parent.html
@@ -29,6 +29,7 @@ promise_test(async t => {
   await new Promise(resolve => window.onhashchange = resolve);
 
   navigation.onnavigate = t.unreached_func("navigate must not fire");
+  navigation.onnavigateerror = t.unreached_func("navigateerror must not fire");
   window.onpopstate = t.unreached_func("popstate must not fire");
   window.onhashchange = t.unreached_func("hashchange must not fire");
 
diff --git a/tests/wpt/web-platform-tests/navigation-api/navigation-methods/sandboxing-back-sibling.html b/tests/wpt/web-platform-tests/navigation-api/navigation-methods/sandboxing-back-sibling.html
index 718ea6d3dda..97c03ea0c2f 100644
--- a/tests/wpt/web-platform-tests/navigation-api/navigation-methods/sandboxing-back-sibling.html
+++ b/tests/wpt/web-platform-tests/navigation-api/navigation-methods/sandboxing-back-sibling.html
@@ -33,6 +33,7 @@ promise_test(async t => {
   await new Promise(resolve => i.onload = resolve);
 
   i.contentWindow.navigation.onnavigate = t.unreached_func("navigate must not fire");
+  i.contentWindow.navigation.onnavigateerror = t.unreached_func("navigateerror must not fire");
   i.contentWindow.onbeforeunload = t.unreached_func("beforeunload must not fire");
   i.contentWindow.onunload = t.unreached_func("unload must not fire");
   i.contentWindow.onpagehide = t.unreached_func("pagehide must not fire");
diff --git a/tests/wpt/web-platform-tests/png/META.yml b/tests/wpt/web-platform-tests/png/META.yml
new file mode 100644
index 00000000000..da174ac614d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/png/META.yml
@@ -0,0 +1,4 @@
+spec: https://www.w3.org/TR/png/
+suggested_reviewers:
+  - programmax
+  - svgeesus
diff --git a/tests/wpt/web-platform-tests/png/cicp-chunk.html b/tests/wpt/web-platform-tests/png/cicp-chunk.html
new file mode 100644
index 00000000000..4afc262dcf5
--- /dev/null
+++ b/tests/wpt/web-platform-tests/png/cicp-chunk.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<title>PNG test: cICP chunk</title>
+<link rel="help" href="https://w3c.github.io/PNG-spec/#cICP-chunk">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+<body>
+
+<h1>cICP chunk</h1>
+<p class="desc">test pixel values of a display-p3 PNG</p>
+
+<p class="output">Actual output:</p>
+<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
+
+<ul id="d"></ul>
+<script>
+var t = async_test("test pixel values of a display-p3 PNG");
+const img = new Image();
+img.onload = () => {
+  _addTest(function(canvas, ctx) {
+    ctx.drawImage(img, 0, 0);
+
+    var pixel = ctx.getImageData(5, 5, 1, 1, {colorSpace: "srgb", storageFormat: "uint8"}).data;
+
+    // The pixel values stored are (51 red, 102 green, 153 blue).
+    // These numbers are chosen because 0.2 * 255 = 51.
+    // The image has a cICP chunk indicating the Display P3 color space.
+    // This results in decoded pixel values of (27 red, 104 green, 157 blue).
+    const pixel_expected = [27, 104, 157, 255];
+    const epsilon = 2;
+
+    _assertSame(pixel.length, pixel_expected.length, "pixel.length", "pixel_expected.length");
+    assert_approx_equals(pixel[0], pixel_expected[0], epsilon);
+    assert_approx_equals(pixel[1], pixel_expected[1], epsilon);
+    assert_approx_equals(pixel[2], pixel_expected[2], epsilon);
+    assert_approx_equals(pixel[3], pixel_expected[3], epsilon);
+  }, {colorSpace: "display-p3"});
+};
+img.src = "./images/cicp.png";
+</script>
diff --git a/tests/wpt/web-platform-tests/png/trns-chunk.html b/tests/wpt/web-platform-tests/png/trns-chunk.html
new file mode 100644
index 00000000000..652cda0e320
--- /dev/null
+++ b/tests/wpt/web-platform-tests/png/trns-chunk.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>PNG test: tRNS chunk</title>
+<link rel="help" href="https://w3c.github.io/PNG-spec/#11tRNS">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+<body>
+
+<h1>tRNS chunk handling</h1>
+<p class="desc">test ignored high bits on lower bit depth tRNS</p>
+
+<p class="output">Actual output:</p>
+<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
+
+<ul id="d"></ul>
+<script>
+var t = async_test("test ignored high bits on lower bit depth tRNS");
+const img = new Image();
+img.onload = () => {
+  _addTest(function(canvas, ctx) {
+    ctx.drawImage(img, 0, 0);
+
+    var pixel = ctx.getImageData(5, 5, 1, 1, {colorSpace: "srgb", storageFormat: "uint8"}).data;
+
+    const pixel_expected = [255, 0, 0, 0];
+    const epsilon = 2;
+
+    _assertSame(pixel.length, pixel_expected.length, "pixel.length", "pixel_expected.length");
+    // Ignore the color channel comparisons.
+    // The image itself stores 255 red, 0 green, 0 blue.
+    // But there may not be a requirement that this be preserved
+    // while decoding or through canvas processing.
+    assert_approx_equals(pixel[3], pixel_expected[3], epsilon);
+  });
+};
+img.src = "../images/trns.png";
+</script>
diff --git a/tests/wpt/web-platform-tests/pointerevents/compat/pointerevent_mouse-pointer-preventdefault-passive.html b/tests/wpt/web-platform-tests/pointerevents/compat/pointerevent_mouse-pointer-preventdefault-passive.html
new file mode 100644
index 00000000000..57da0968660
--- /dev/null
+++ b/tests/wpt/web-platform-tests/pointerevents/compat/pointerevent_mouse-pointer-preventdefault-passive.html
@@ -0,0 +1,84 @@
+<!DOCTYPE HTML>
+<title>Canceling passive pointerevents does not affect compat mouseevents</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="../pointerevent_support.js"></script>
+<style>
+  div {
+    margin: 20px;
+    padding: 20px;
+    background-color: green;
+    user-select: none; // Prevents text selection on drag.
+  }
+</style>
+<div id="logger" draggable="false"></div>
+<div id="done"></div>
+
+<script>
+  'use strict';
+
+  const logger = document.getElementById("logger");
+  const done = document.getElementById("done");
+
+  let received_events = [];
+
+  const logged_pointer_events = ["pointerdown", "pointermove", "pointerup",
+    "pointerenter", "pointerleave", "pointerover", "pointerout"];
+  const logged_mouse_events = ["mousedown", "mousemove", "mouseup",
+    "mouseenter", "mouseleave", "mouseover", "mouseout"];
+
+  const expected_pointer_events = [
+    "pointerover", "pointerenter",
+    "pointermove", "pointerdown", "pointermove", "pointerup",
+    "pointerout", "pointerleave"
+  ];
+
+  const expected_mouse_events = [
+    "mouseover", "mouseenter",
+    "mousemove", "mousedown", "mousemove", "mouseup",
+    "mouseout", "mouseleave"
+  ];
+
+  logged_pointer_events.forEach(ename => logger.addEventListener(ename, e => {
+    received_events.push(e.type);
+    e.preventDefault();
+  }, { passive: true }));
+
+  logged_mouse_events.forEach(ename => logger.addEventListener(ename, e =>
+    received_events.push(e.type)));
+
+  promise_test(async () => {
+    received_events = [];
+
+    let click_on_done = getEvent("click", done);
+
+    let actions = new test_driver.Actions()
+      // Start outside all event listeners
+      .pointerMove(0, 0)
+      .pointerDown()
+      .pointerUp()
+      // Drag within "logger"
+      .pointerMove(0, 0, { origin: logger })
+      .pointerDown()
+      .pointerMove(15, 15, { origin: logger })
+      .pointerUp()
+      // Click "done"
+      .pointerMove(0, 0, { origin: done })
+      .pointerDown()
+      .pointerUp()
+      .send();
+
+    await actions;
+    await click_on_done;
+
+    assert_array_equals(received_events.filter(isPointerEvent),
+      expected_pointer_events, "expected pointer events");
+    assert_array_equals(received_events.filter(isMouseEvent),
+      expected_mouse_events, "expected mouse events");
+    assert_true(arePointerEventsBeforeCompatMouseEvents(received_events),
+      "pairing of pointer/mouse events");
+  }, "Canceling passive pointerevents does not affect compat mouseevents");
+</script>
diff --git a/tests/wpt/web-platform-tests/scroll-animations/crashtests/invalid-animation-range.html b/tests/wpt/web-platform-tests/scroll-animations/crashtests/invalid-animation-range.html
new file mode 100644
index 00000000000..43b23c93b60
--- /dev/null
+++ b/tests/wpt/web-platform-tests/scroll-animations/crashtests/invalid-animation-range.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>Invalid animation range</title>
+<body onload="runTest()">
+  <div id="target"></div>
+</body>
+<script src="../../web-animations/testcommon.js"></script>
+<script>
+  async function runTest() {
+    const anim = target.animate(undefined, {rangeStart: "initial" });
+    await waitForNextFrame();
+    await waitForNextFrame();
+  }
+</script>
diff --git a/tests/wpt/web-platform-tests/scroll-animations/css/animation-shorthand.html b/tests/wpt/web-platform-tests/scroll-animations/css/animation-shorthand.html
index 60d6c766467..87e66d0f532 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/css/animation-shorthand.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/css/animation-shorthand.html
@@ -40,4 +40,53 @@ test_shorthand_value('animation',
   'animation-name': 'anim1, anim2, anim3',
   'animation-timeline': 'auto, auto, auto'
 });
+
+test((t) => {
+  t.add_cleanup(() => {
+    target.style = '';
+  });
+
+  target.style.animation = 'anim 1s';
+  target.style.animationTimeline = 'timeline';
+  assert_equals(target.style.animation, '');
+  assert_equals(target.style.animationName, 'anim');
+  assert_equals(target.style.animationDuration, '1s');
+}, 'Animation shorthand can not represent non-initial timelines (specified)');
+
+test((t) => {
+  t.add_cleanup(() => {
+    target.style = '';
+  });
+
+  target.style.animation = 'anim 1s';
+  target.style.animationTimeline = 'timeline';
+  assert_equals(getComputedStyle(target).animation, '');
+  assert_equals(getComputedStyle(target).animationName, 'anim');
+  assert_equals(getComputedStyle(target).animationDuration, '1s');
+}, 'Animation shorthand can not represent non-initial timelines (computed)');
+
+test((t) => {
+  t.add_cleanup(() => {
+    target.style = '';
+  });
+
+  target.style.animation = 'anim 1s';
+  target.style.animationDelayEnd = '42s';
+  assert_equals(target.style.animation, '');
+  assert_equals(target.style.animationName, 'anim');
+  assert_equals(target.style.animationDuration, '1s');
+}, 'Animation shorthand can not represent non-initial animation-delay-end (specified)');
+
+test((t) => {
+  t.add_cleanup(() => {
+    target.style = '';
+  });
+
+  target.style.animation = 'anim 1s';
+  target.style.animationDelayEnd = '42s';
+  assert_equals(getComputedStyle(target).animation, '');
+  assert_equals(getComputedStyle(target).animationName, 'anim');
+  assert_equals(getComputedStyle(target).animationDuration, '1s');
+}, 'Animation shorthand can not represent non-initial animation-delay-end (computed)');
+
 </script>
diff --git a/tests/wpt/web-platform-tests/scroll-animations/css/animation-timeline-named-scroll-progress-timeline.tentative.html b/tests/wpt/web-platform-tests/scroll-animations/css/animation-timeline-named-scroll-progress-timeline.tentative.html
index 9f55e2d2c91..30461723386 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/css/animation-timeline-named-scroll-progress-timeline.tentative.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/css/animation-timeline-named-scroll-progress-timeline.tentative.html
@@ -655,8 +655,25 @@ promise_test(async t => {
   assert_equals(getComputedStyle(target).translate, '100px');
 }, 'scroll-timeline-axis is vertical');
 
-// TODO: Add more tests which change scroll-timeline-axis property.
-// Those animations which use this timeline should be restyled properly.
+promise_test(async t => {
+  let [scroller, target] = createScrollerAndTarget(t);
+
+  document.body.appendChild(scroller);
+  document.body.appendChild(target);
+
+  scroller.style.scrollTimeline = 'timeline block';
+  target.style.animation = "anim 10s linear";
+  target.style.animationTimeline = 'timeline';
+
+  scroller.scrollTop = 50;
+  scroller.scrollLeft = 25;
+  await waitForNextFrame();
+  assert_equals(getComputedStyle(target).translate, '100px');
+
+  scroller.style.scrollTimelineAxis = 'inline';
+  await waitForNextFrame();
+  assert_equals(getComputedStyle(target).translate, '75px');
+}, 'scroll-timeline-axis is mutated');
 
 </script>
 </body>
diff --git a/tests/wpt/web-platform-tests/service-workers/service-worker/import-scripts-data-url.https.html b/tests/wpt/web-platform-tests/service-workers/service-worker/import-scripts-data-url.https.html
new file mode 100644
index 00000000000..f0922193dd0
--- /dev/null
+++ b/tests/wpt/web-platform-tests/service-workers/service-worker/import-scripts-data-url.https.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Tests for importScripts: data: URL</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/test-helpers.sub.js"></script>
+<body>
+<script>
+promise_test(async t => {
+    const scope = 'resources/import-scripts-data-url';
+    await service_worker_unregister(t, scope);
+    let reg = await navigator.serviceWorker.register(
+      'resources/import-scripts-data-url-worker.js', { scope: scope });
+    t.add_cleanup(_ => reg.unregister());
+    assert_not_equals(reg.installing, null, 'worker is installing');
+  }, 'importScripts() supports data URLs');
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/service-workers/service-worker/resources/import-scripts-data-url-worker.js b/tests/wpt/web-platform-tests/service-workers/service-worker/resources/import-scripts-data-url-worker.js
new file mode 100644
index 00000000000..fdabdafc630
--- /dev/null
+++ b/tests/wpt/web-platform-tests/service-workers/service-worker/resources/import-scripts-data-url-worker.js
@@ -0,0 +1 @@
+importScripts('data:text/javascript,');
diff --git a/tests/wpt/web-platform-tests/storage-access-api/helpers.js b/tests/wpt/web-platform-tests/storage-access-api/helpers.js
index ddc638434ae..f718f637cd9 100644
--- a/tests/wpt/web-platform-tests/storage-access-api/helpers.js
+++ b/tests/wpt/web-platform-tests/storage-access-api/helpers.js
@@ -126,11 +126,11 @@ async function DeleteCookieInFrame(frame, name, params) {
 }
 
 // Tests whether the frame can write cookies via document.cookie. Note that this
-// overwrites, then deletes, cookies named "cookie" and "foo".
+// overwrites, then optionally deletes, cookies named "cookie" and "foo".
 //
 // This function requires the caller to have included
 // /cookies/resources/cookie-helper.sub.js.
-async function CanFrameWriteCookies(frame) {
+async function CanFrameWriteCookies(frame, keep_after_writing = false) {
   const cookie_suffix = "Secure;SameSite=None;Path=/";
   await DeleteCookieInFrame(frame, "cookie", cookie_suffix);
   await DeleteCookieInFrame(frame, "foo", cookie_suffix);
@@ -142,8 +142,10 @@ async function CanFrameWriteCookies(frame) {
   const can_write = cookieStringHasCookie("cookie", "monster", cookies) &&
       cookieStringHasCookie("foo", "bar", cookies);
 
-  await DeleteCookieInFrame(frame, "cookie", cookie_suffix);
-  await DeleteCookieInFrame(frame, "foo", cookie_suffix);
+  if (!keep_after_writing) {
+    await DeleteCookieInFrame(frame, "cookie", cookie_suffix);
+    await DeleteCookieInFrame(frame, "foo", cookie_suffix);
+  }
 
   return can_write;
 }
diff --git a/tests/wpt/web-platform-tests/storage-access-api/requestStorageAccess-cross-origin-iframe-navigation.sub.https.window.js b/tests/wpt/web-platform-tests/storage-access-api/requestStorageAccess-cross-origin-iframe-navigation.sub.https.window.js
index 67906708aed..24595ed3408 100644
--- a/tests/wpt/web-platform-tests/storage-access-api/requestStorageAccess-cross-origin-iframe-navigation.sub.https.window.js
+++ b/tests/wpt/web-platform-tests/storage-access-api/requestStorageAccess-cross-origin-iframe-navigation.sub.https.window.js
@@ -30,7 +30,7 @@
     assert_true(await RequestStorageAccessInFrame(frame), "requestStorageAccess resolves without requiring a gesture.");
 
     assert_true(await FrameHasStorageAccess(frame), "frame has storage access after request.");
-    assert_true(await CanFrameWriteCookies(frame), "frame can write cookies via JS after request.");
+    assert_true(await CanFrameWriteCookies(frame, /* keep_after_writing=*/true), "frame can write cookies via JS after request.");
 
     return frame;
   }
@@ -42,6 +42,7 @@
 
     await FrameInitiatedReload(frame);
 
+    assert_true(cookieStringHasCookie('cookie', 'monster', await GetHTTPCookiesFromFrame(frame)), "The frame's navigation request included cookies.");
     assert_true(await FrameHasStorageAccess(frame), "frame has storage access after refresh.");
     assert_true(await CanFrameWriteCookies(frame), "frame can write cookies via JS after refresh.");
   }, "Self-initiated reloads preserve storage access");
@@ -53,6 +54,7 @@
 
     await FrameInitiatedNavigation(frame, altWwwResponder);
 
+    assert_true(cookieStringHasCookie('cookie', 'monster', await GetHTTPCookiesFromFrame(frame)), "The frame's navigation request included cookies.");
     assert_true(await FrameHasStorageAccess(frame), "frame has storage access after refresh.");
     assert_true(await CanFrameWriteCookies(frame), "frame can write cookies via JS after refresh.");
   }, "Self-initiated same-origin navigations preserve storage access");
diff --git a/tests/wpt/web-platform-tests/storage-access-api/storage-access-permission.sub.https.window.js b/tests/wpt/web-platform-tests/storage-access-api/storage-access-permission.sub.https.window.js
index 4222051c10b..82794061bd0 100644
--- a/tests/wpt/web-platform-tests/storage-access-api/storage-access-permission.sub.https.window.js
+++ b/tests/wpt/web-platform-tests/storage-access-api/storage-access-permission.sub.https.window.js
@@ -62,10 +62,10 @@
 
     const permission = await navigator.permissions.query({name: "storage-access"});
     assert_equals(permission.name, "storage-access");
-    assert_equals(permission.state, "denied");
+    assert_equals(permission.state, "prompt");
 
     await test_driver.set_permission({ name: 'storage-access' }, 'prompt');
-  }, "Permission denied state can be queried");
+  }, "Permission denied state is hidden");
 
   promise_test(async t => {
     t.add_cleanup(async () => {
diff --git a/tests/wpt/web-platform-tests/tools/third_party/tooltool/tooltool.py b/tests/wpt/web-platform-tests/tools/third_party/tooltool/tooltool.py
index 53929fce880..5abc98a09d8 100755
--- a/tests/wpt/web-platform-tests/tools/third_party/tooltool/tooltool.py
+++ b/tests/wpt/web-platform-tests/tools/third_party/tooltool/tooltool.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # tooltool is a lookaside cache implemented in Python
 # Copyright (C) 2011 John H. Ford <john@johnford.info>
@@ -22,8 +22,6 @@
 # in which the manifest file resides and it should be called
 # 'manifest.tt'
 
-from __future__ import print_function
-
 import base64
 import calendar
 import hashlib
@@ -36,72 +34,180 @@ import os
 import pprint
 import re
 import shutil
+import stat
 import sys
 import tarfile
 import tempfile
 import threading
 import time
 import zipfile
+from contextlib import closing, contextmanager
+from functools import wraps
+from io import BytesIO, open
+from random import random
+from subprocess import PIPE, Popen
 
-from io import open
-from io import BytesIO
-from subprocess import PIPE
-from subprocess import Popen
-
-__version__ = '1'
+__version__ = "1.4.0"
 
 # Allowed request header characters:
 # !#$%&'()*+,-./:;<=>?@[]^_`{|}~ and space, a-z, A-Z, 0-9, \, "
 REQUEST_HEADER_ATTRIBUTE_CHARS = re.compile(
-    r"^[ a-zA-Z0-9_\!#\$%&'\(\)\*\+,\-\./\:;<\=>\?@\[\]\^`\{\|\}~]*$")
-DEFAULT_MANIFEST_NAME = 'manifest.tt'
-TOOLTOOL_PACKAGE_SUFFIX = '.TOOLTOOL-PACKAGE'
+    r"^[ a-zA-Z0-9_\!#\$%&'\(\)\*\+,\-\./\:;<\=>\?@\[\]\^`\{\|\}~]*$"
+)
+DEFAULT_MANIFEST_NAME = "manifest.tt"
+TOOLTOOL_PACKAGE_SUFFIX = ".TOOLTOOL-PACKAGE"
 HAWK_VER = 1
 PY3 = sys.version_info[0] == 3
 
 if PY3:
-    open_attrs = dict(mode='w', encoding='utf-8')
     six_binary_type = bytes
-    six_text_type = str
-    unicode = str  # Silence `pyflakes` from reporting `undefined name 'unicode'` in Python 3.
+    unicode = (
+        str  # Silence `pyflakes` from reporting `undefined name 'unicode'` in Python 3.
+    )
     import urllib.request as urllib2
-    from http.client import HTTPSConnection, HTTPConnection
-    from urllib.parse import urlparse, urljoin
-    from urllib.request import Request
+    from http.client import HTTPConnection, HTTPSConnection
     from urllib.error import HTTPError, URLError
+    from urllib.parse import urljoin, urlparse
+    from urllib.request import Request
 else:
-    open_attrs = dict(mode='wb')
     six_binary_type = str
-    six_text_type = unicode
     import urllib2
-    from httplib import HTTPSConnection, HTTPConnection
-    from urllib2 import Request, HTTPError, URLError
-    from urlparse import urlparse, urljoin
+    from httplib import HTTPConnection, HTTPSConnection
+    from urllib2 import HTTPError, Request, URLError
+    from urlparse import urljoin, urlparse
 
 
 log = logging.getLogger(__name__)
 
 
-def request_has_data(req):
-    if PY3:
-        return req.data is not None
-    return req.has_data()
+# Vendored code from `redo` module
+def retrier(attempts=5, sleeptime=10, max_sleeptime=300, sleepscale=1.5, jitter=1):
+    """
+    This function originates from redo 2.0.3 https://github.com/mozilla-releng/redo
+    A generator function that sleeps between retries, handles exponential
+    backoff and jitter. The action you are retrying is meant to run after
+    retrier yields.
+    """
+    jitter = jitter or 0  # py35 barfs on the next line if jitter is None
+    if jitter > sleeptime:
+        # To prevent negative sleep times
+        raise Exception(
+            "jitter ({}) must be less than sleep time ({})".format(jitter, sleeptime)
+        )
 
+    sleeptime_real = sleeptime
+    for _ in range(attempts):
+        log.debug("attempt %i/%i", _ + 1, attempts)
 
-def to_binary(val):
-    if isinstance(val, six_text_type):
-        return val.encode('utf-8')
-    return val
+        yield sleeptime_real
 
+        if jitter:
+            sleeptime_real = sleeptime + random.uniform(-jitter, jitter)
+            # our jitter should scale along with the sleeptime
+            jitter = jitter * sleepscale
+        else:
+            sleeptime_real = sleeptime
 
-def to_text(val):
-    if isinstance(val, six_binary_type):
-        return val.decode('utf-8')
-    return val
+        sleeptime *= sleepscale
+
+        if sleeptime_real > max_sleeptime:
+            sleeptime_real = max_sleeptime
+
+        # Don't need to sleep the last time
+        if _ < attempts - 1:
+            log.debug(
+                "sleeping for %.2fs (attempt %i/%i)", sleeptime_real, _ + 1, attempts
+            )
+            time.sleep(sleeptime_real)
+
+
+def retry(
+    action,
+    attempts=5,
+    sleeptime=60,
+    max_sleeptime=5 * 60,
+    sleepscale=1.5,
+    jitter=1,
+    retry_exceptions=(Exception,),
+    cleanup=None,
+    args=(),
+    kwargs={},
+    log_args=True,
+):
+    """
+    This function originates from redo 2.0.3 https://github.com/mozilla-releng/redo
+    Calls an action function until it succeeds, or we give up.
+    """
+    assert callable(action)
+    assert not cleanup or callable(cleanup)
+
+    action_name = getattr(action, "__name__", action)
+    if log_args and (args or kwargs):
+        log_attempt_args = (
+            "retry: calling %s with args: %s," " kwargs: %s, attempt #%d",
+            action_name,
+            args,
+            kwargs,
+        )
+    else:
+        log_attempt_args = ("retry: calling %s, attempt #%d", action_name)
+
+    if max_sleeptime < sleeptime:
+        log.debug("max_sleeptime %d less than sleeptime %d", max_sleeptime, sleeptime)
+
+    n = 1
+    for _ in retrier(
+        attempts=attempts,
+        sleeptime=sleeptime,
+        max_sleeptime=max_sleeptime,
+        sleepscale=sleepscale,
+        jitter=jitter,
+    ):
+        try:
+            logfn = log.info if n != 1 else log.debug
+            logfn_args = log_attempt_args + (n,)
+            logfn(*logfn_args)
+            return action(*args, **kwargs)
+        except retry_exceptions:
+            log.debug("retry: Caught exception: ", exc_info=True)
+            if cleanup:
+                cleanup()
+            if n == attempts:
+                log.info("retry: Giving up on %s", action_name)
+                raise
+            continue
+        finally:
+            n += 1
+
+
+def retriable(*retry_args, **retry_kwargs):
+    """
+    This function originates from redo 2.0.3 https://github.com/mozilla-releng/redo
+    A decorator factory for retry(). Wrap your function in @retriable(...) to
+    give it retry powers!
+    """
+
+    def _retriable_factory(func):
+        @wraps(func)
+        def _retriable_wrapper(*args, **kwargs):
+            return retry(func, args=args, kwargs=kwargs, *retry_args, **retry_kwargs)
+
+        return _retriable_wrapper
+
+    return _retriable_factory
+
+
+# end of vendored code from redo module
+
+
+def request_has_data(req):
+    if PY3:
+        return req.data is not None
+    return req.has_data()
 
 
 def get_hexdigest(val):
-    return hashlib.sha512(to_binary(val)).hexdigest()
+    return hashlib.sha512(val).hexdigest()
 
 
 class FileRecordJSONEncoderException(Exception):
@@ -113,7 +219,6 @@ class InvalidManifest(Exception):
 
 
 class ExceptionWithFilename(Exception):
-
     def __init__(self, filename):
         Exception.__init__(self)
         self.filename = filename
@@ -142,22 +247,24 @@ class BadHeaderValue(Exception):
 def parse_url(url):
     url_parts = urlparse(url)
     url_dict = {
-        'scheme': url_parts.scheme,
-        'hostname': url_parts.hostname,
-        'port': url_parts.port,
-        'path': url_parts.path,
-        'resource': url_parts.path,
-        'query': url_parts.query,
+        "scheme": url_parts.scheme,
+        "hostname": url_parts.hostname,
+        "port": url_parts.port,
+        "path": url_parts.path,
+        "resource": url_parts.path,
+        "query": url_parts.query,
     }
-    if len(url_dict['query']) > 0:
-        url_dict['resource'] = '%s?%s' % (url_dict['resource'],  # pragma: no cover
-                                          url_dict['query'])
+    if len(url_dict["query"]) > 0:
+        url_dict["resource"] = "%s?%s" % (
+            url_dict["resource"],  # pragma: no cover
+            url_dict["query"],
+        )
 
     if url_parts.port is None:
-        if url_parts.scheme == 'http':
-            url_dict['port'] = 80
-        elif url_parts.scheme == 'https':  # pragma: no cover
-            url_dict['port'] = 443
+        if url_parts.scheme == "http":
+            url_dict["port"] = 80
+        elif url_parts.scheme == "https":  # pragma: no cover
+            url_dict["port"] = 443
     return url_dict
 
 
@@ -171,110 +278,119 @@ def random_string(length):
 
 def prepare_header_val(val):
     if isinstance(val, six_binary_type):
-        val = val.decode('utf-8')
+        val = val.decode("utf-8")
 
     if not REQUEST_HEADER_ATTRIBUTE_CHARS.match(val):
         raise BadHeaderValue(  # pragma: no cover
-            'header value value={val} contained an illegal character'.format(val=repr(val)))
+            "header value value={val} contained an illegal character".format(
+                val=repr(val)
+            )
+        )
 
     return val
 
 
 def parse_content_type(content_type):  # pragma: no cover
     if content_type:
-        return content_type.split(';')[0].strip().lower()
+        return content_type.split(";")[0].strip().lower()
     else:
-        return ''
+        return ""
 
 
 def calculate_payload_hash(algorithm, payload, content_type):  # pragma: no cover
     parts = [
-        part if isinstance(part, six_binary_type) else part.encode('utf8')
-        for part in ['hawk.' + str(HAWK_VER) + '.payload\n',
-                     parse_content_type(content_type) + '\n',
-                     payload or '',
-                     '\n',
-                     ]
+        part if isinstance(part, six_binary_type) else part.encode("utf8")
+        for part in [
+            "hawk." + str(HAWK_VER) + ".payload\n",
+            parse_content_type(content_type) + "\n",
+            payload or "",
+            "\n",
+        ]
     ]
 
     p_hash = hashlib.new(algorithm)
-    p_hash.update(''.join(parts))
+    for p in parts:
+        p_hash.update(p)
 
-    log.debug('calculating payload hash from:\n{parts}'.format(parts=pprint.pformat(parts)))
+    log.debug(
+        "calculating payload hash from:\n{parts}".format(parts=pprint.pformat(parts))
+    )
 
     return base64.b64encode(p_hash.digest())
 
 
 def validate_taskcluster_credentials(credentials):
-    if not hasattr(credentials, '__getitem__'):
-        raise InvalidCredentials('credentials must be a dict-like object')  # pragma: no cover
+    if not hasattr(credentials, "__getitem__"):
+        raise InvalidCredentials(
+            "credentials must be a dict-like object"
+        )  # pragma: no cover
     try:
-        credentials['clientId']
-        credentials['accessToken']
+        credentials["clientId"]
+        credentials["accessToken"]
     except KeyError:  # pragma: no cover
         etype, val, tb = sys.exc_info()
-        raise InvalidCredentials('{etype}: {val}'.format(etype=etype, val=val))
+        raise InvalidCredentials("{etype}: {val}".format(etype=etype, val=val))
 
 
 def normalize_header_attr(val):
     if isinstance(val, six_binary_type):
-        return val.decode('utf-8')
+        return val.decode("utf-8")
     return val  # pragma: no cover
 
 
-def normalize_string(mac_type,
-                     timestamp,
-                     nonce,
-                     method,
-                     name,
-                     host,
-                     port,
-                     content_hash,
-                     ):
-    return '\n'.join([
-        normalize_header_attr(header)
-        # The blank lines are important. They follow what the Node Hawk lib does.
-        for header in ['hawk.' + str(HAWK_VER) + '.' + mac_type,
-                       timestamp,
-                       nonce,
-                       method or '',
-                       name or '',
-                       host,
-                       port,
-                       content_hash or '',
-                       '',  # for ext which is empty in this case
-                       '',  # Add trailing new line.
-                       ]
-    ])
-
-
-def calculate_mac(mac_type,
-                  access_token,
-                  algorithm,
-                  timestamp,
-                  nonce,
-                  method,
-                  name,
-                  host,
-                  port,
-                  content_hash,
-                  ):
-    normalized = normalize_string(mac_type,
-                                  timestamp,
-                                  nonce,
-                                  method,
-                                  name,
-                                  host,
-                                  port,
-                                  content_hash)
-    log.debug(u'normalized resource for mac calc: {norm}'.format(norm=normalized))
+def normalize_string(
+    mac_type,
+    timestamp,
+    nonce,
+    method,
+    name,
+    host,
+    port,
+    content_hash,
+):
+    return "\n".join(
+        [
+            normalize_header_attr(header)
+            # The blank lines are important. They follow what the Node Hawk lib does.
+            for header in [
+                "hawk." + str(HAWK_VER) + "." + mac_type,
+                timestamp,
+                nonce,
+                method or "",
+                name or "",
+                host,
+                port,
+                content_hash or "",
+                "",  # for ext which is empty in this case
+                "",  # Add trailing new line.
+            ]
+        ]
+    )
+
+
+def calculate_mac(
+    mac_type,
+    access_token,
+    algorithm,
+    timestamp,
+    nonce,
+    method,
+    name,
+    host,
+    port,
+    content_hash,
+):
+    normalized = normalize_string(
+        mac_type, timestamp, nonce, method, name, host, port, content_hash
+    )
+    log.debug(u"normalized resource for mac calc: {norm}".format(norm=normalized))
     digestmod = getattr(hashlib, algorithm)
 
     if not isinstance(normalized, six_binary_type):
-        normalized = normalized.encode('utf8')
+        normalized = normalized.encode("utf8")
 
     if not isinstance(access_token, six_binary_type):
-        access_token = access_token.encode('ascii')
+        access_token = access_token.encode("ascii")
 
     result = hmac.new(access_token, normalized, digestmod)
     return base64.b64encode(result.digest())
@@ -285,31 +401,36 @@ def make_taskcluster_header(credentials, req):
 
     url = req.get_full_url()
     method = req.get_method()
-    algorithm = 'sha256'
+    algorithm = "sha256"
     timestamp = str(utc_now())
     nonce = random_string(6)
     url_parts = parse_url(url)
 
     content_hash = None
     if request_has_data(req):
+        if PY3:
+            data = req.data
+        else:
+            data = req.get_data()
         content_hash = calculate_payload_hash(  # pragma: no cover
             algorithm,
-            req.get_data(),
+            data,
             # maybe we should detect this from req.headers but we anyway expect json
-            content_type='application/json',
+            content_type="application/json",
         )
 
-    mac = calculate_mac('header',
-                        credentials['accessToken'],
-                        algorithm,
-                        timestamp,
-                        nonce,
-                        method,
-                        url_parts['resource'],
-                        url_parts['hostname'],
-                        str(url_parts['port']),
-                        content_hash,
-                        )
+    mac = calculate_mac(
+        "header",
+        credentials["accessToken"],
+        algorithm,
+        timestamp,
+        nonce,
+        method,
+        url_parts["resource"],
+        url_parts["hostname"],
+        str(url_parts["port"]),
+        content_hash,
+    )
 
     header = u'Hawk mac="{}"'.format(prepare_header_val(mac))
 
@@ -318,24 +439,32 @@ def make_taskcluster_header(credentials, req):
 
     header = u'{header}, id="{id}", ts="{ts}", nonce="{nonce}"'.format(
         header=header,
-        id=prepare_header_val(credentials['clientId']),
+        id=prepare_header_val(credentials["clientId"]),
         ts=prepare_header_val(timestamp),
         nonce=prepare_header_val(nonce),
     )
 
-    log.debug('Hawk header for URL={} method={}: {}'.format(url, method, header))
+    log.debug("Hawk header for URL={} method={}: {}".format(url, method, header))
 
     return header
 
 
 class FileRecord(object):
-
-    def __init__(self, filename, size, digest, algorithm, unpack=False,
-                 version=None, visibility=None):
+    def __init__(
+        self,
+        filename,
+        size,
+        digest,
+        algorithm,
+        unpack=False,
+        version=None,
+        visibility=None,
+    ):
         object.__init__(self)
-        if '/' in filename or '\\' in filename:
+        if "/" in filename or "\\" in filename:
             log.error(
-                "The filename provided contains path information and is, therefore, invalid.")
+                "The filename provided contains path information and is, therefore, invalid."
+            )
             raise BadFilenameException(filename=filename)
         self.filename = filename
         self.size = size
@@ -348,12 +477,14 @@ class FileRecord(object):
     def __eq__(self, other):
         if self is other:
             return True
-        if self.filename == other.filename and \
-           self.size == other.size and \
-           self.digest == other.digest and \
-           self.algorithm == other.algorithm and \
-           self.version == other.version and \
-           self.visibility == other.visibility:
+        if (
+            self.filename == other.filename
+            and self.size == other.size
+            and self.digest == other.digest
+            and self.algorithm == other.algorithm
+            and self.version == other.version
+            and self.visibility == other.visibility
+        ):
             return True
         else:
             return False
@@ -365,9 +496,18 @@ class FileRecord(object):
         return repr(self)
 
     def __repr__(self):
-        return "%s.%s(filename='%s', size=%s, digest='%s', algorithm='%s', visibility=%r)" % (
-            __name__, self.__class__.__name__, self.filename, self.size,
-            self.digest, self.algorithm, self.visibility)
+        return (
+            "%s.%s(filename='%s', size=%s, digest='%s', algorithm='%s', visibility=%r)"
+            % (
+                __name__,
+                self.__class__.__name__,
+                self.filename,
+                self.size,
+                self.digest,
+                self.algorithm,
+                self.visibility,
+            )
+        )
 
     def present(self):
         # Doesn't check validity
@@ -377,17 +517,15 @@ class FileRecord(object):
         if self.present():
             return self.size == os.path.getsize(self.filename)
         else:
-            log.debug(
-                "trying to validate size on a missing file, %s", self.filename)
+            log.debug("trying to validate size on a missing file, %s", self.filename)
             raise MissingFileException(filename=self.filename)
 
     def validate_digest(self):
         if self.present():
-            with open(self.filename, 'rb') as f:
+            with open(self.filename, "rb") as f:
                 return self.digest == digest_file(f, self.algorithm)
         else:
-            log.debug(
-                "trying to validate digest on a missing file, %s', self.filename")
+            log.debug("trying to validate digest on a missing file, %s', self.filename")
             raise MissingFileException(filename=self.filename)
 
     def validate(self):
@@ -406,35 +544,40 @@ class FileRecord(object):
 
 
 def create_file_record(filename, algorithm):
-    fo = open(filename, 'rb')
+    fo = open(filename, "rb")
     stored_filename = os.path.split(filename)[1]
-    fr = FileRecord(stored_filename, os.path.getsize(
-        filename), digest_file(fo, algorithm), algorithm)
+    fr = FileRecord(
+        stored_filename,
+        os.path.getsize(filename),
+        digest_file(fo, algorithm),
+        algorithm,
+    )
     fo.close()
     return fr
 
 
 class FileRecordJSONEncoder(json.JSONEncoder):
-
     def encode_file_record(self, obj):
         if not issubclass(type(obj), FileRecord):
-            err = "FileRecordJSONEncoder is only for FileRecord and lists of FileRecords, " \
-                  "not %s" % obj.__class__.__name__
+            err = (
+                "FileRecordJSONEncoder is only for FileRecord and lists of FileRecords, "
+                "not %s" % obj.__class__.__name__
+            )
             log.warn(err)
             raise FileRecordJSONEncoderException(err)
         else:
             rv = {
-                'filename': obj.filename,
-                'size': obj.size,
-                'algorithm': obj.algorithm,
-                'digest': obj.digest,
+                "filename": obj.filename,
+                "size": obj.size,
+                "algorithm": obj.algorithm,
+                "digest": obj.digest,
             }
             if obj.unpack:
-                rv['unpack'] = True
+                rv["unpack"] = True
             if obj.version:
-                rv['version'] = obj.version
+                rv["version"] = obj.version
             if obj.visibility is not None:
-                rv['visibility'] = obj.visibility
+                rv["visibility"] = obj.visibility
             return rv
 
     def default(self, f):
@@ -452,6 +595,7 @@ class FileRecordJSONDecoder(json.JSONDecoder):
     """I help the json module materialize a FileRecord from
     a JSON file.  I understand FileRecords and lists of
     FileRecords.  I ignore things that I don't expect for now"""
+
     # TODO: make this more explicit in what it's looking for
     # and error out on unexpected things
 
@@ -464,10 +608,10 @@ class FileRecordJSONDecoder(json.JSONDecoder):
                     record_list.append(record)
             return record_list
         required_fields = [
-            'filename',
-            'size',
-            'algorithm',
-            'digest',
+            "filename",
+            "size",
+            "algorithm",
+            "digest",
         ]
         if isinstance(obj, dict):
             missing = False
@@ -477,12 +621,18 @@ class FileRecordJSONDecoder(json.JSONDecoder):
                     break
 
             if not missing:
-                unpack = obj.get('unpack', False)
-                version = obj.get('version', None)
-                visibility = obj.get('visibility', None)
+                unpack = obj.get("unpack", False)
+                version = obj.get("version", None)
+                visibility = obj.get("visibility", None)
                 rv = FileRecord(
-                    obj['filename'], obj['size'], obj['digest'], obj['algorithm'],
-                    unpack, version, visibility)
+                    obj["filename"],
+                    obj["size"],
+                    obj["digest"],
+                    obj["algorithm"],
+                    unpack,
+                    version,
+                    visibility,
+                )
                 log.debug("materialized %s" % rv)
                 return rv
         return obj
@@ -495,7 +645,7 @@ class FileRecordJSONDecoder(json.JSONDecoder):
 
 class Manifest(object):
 
-    valid_formats = ('json',)
+    valid_formats = ("json",)
 
     def __init__(self, file_records=None):
         self.file_records = file_records or []
@@ -504,7 +654,7 @@ class Manifest(object):
         if self is other:
             return True
         if len(self.file_records) != len(other.file_records):
-            log.debug('Manifests differ in number of files')
+            log.debug("Manifests differ in number of files")
             return False
         # sort the file records by filename before comparing
         mine = sorted((fr.filename, fr) for fr in self.file_records)
@@ -536,39 +686,44 @@ class Manifest(object):
     def validate(self):
         return all(i.validate() for i in self.file_records)
 
-    def load(self, data_file, fmt='json'):
+    def load(self, data_file, fmt="json"):
         assert fmt in self.valid_formats
-        if fmt == 'json':
+        if fmt == "json":
             try:
                 self.file_records.extend(
-                    json.load(data_file, cls=FileRecordJSONDecoder))
+                    json.load(data_file, cls=FileRecordJSONDecoder)
+                )
             except ValueError:
                 raise InvalidManifest("trying to read invalid manifest file")
 
-    def loads(self, data_string, fmt='json'):
+    def loads(self, data_string, fmt="json"):
         assert fmt in self.valid_formats
-        if fmt == 'json':
+        if fmt == "json":
             try:
                 self.file_records.extend(
-                    json.loads(data_string, cls=FileRecordJSONDecoder))
+                    json.loads(data_string, cls=FileRecordJSONDecoder)
+                )
             except ValueError:
                 raise InvalidManifest("trying to read invalid manifest file")
 
-    def dump(self, output_file, fmt='json'):
+    def dump(self, output_file, fmt="json"):
         assert fmt in self.valid_formats
-        if fmt == 'json':
+        if fmt == "json":
             return json.dump(
-                self.file_records, output_file,
-                indent=2, separators=(',', ': '),
+                self.file_records,
+                output_file,
+                indent=2,
+                separators=(",", ": "),
                 cls=FileRecordJSONEncoder,
             )
 
-    def dumps(self, fmt='json'):
+    def dumps(self, fmt="json"):
         assert fmt in self.valid_formats
-        if fmt == 'json':
+        if fmt == "json":
             return json.dumps(
                 self.file_records,
-                indent=2, separators=(',', ': '),
+                indent=2,
+                separators=(",", ": "),
                 cls=FileRecordJSONEncoder,
             )
 
@@ -582,8 +737,8 @@ def digest_file(f, a):
     while data:
         h.update(data)
         data = f.read(chunk_size)
-    name = repr(f.name) if hasattr(f, 'name') else 'a file'
-    log.debug('hashed %s with %s to be %s', name, a, h.hexdigest())
+    name = repr(f.name) if hasattr(f, "name") else "a file"
+    log.debug("hashed %s with %s to be %s", name, a, h.hexdigest())
     return h.hexdigest()
 
 
@@ -594,7 +749,7 @@ def execute(cmd):
         line = process.stdout.readline()
         if not line:
             break
-        log.info(line.replace('\n', ' '))
+        log.info(line.replace("\n", " "))
     return process.wait() == 0
 
 
@@ -602,14 +757,13 @@ def open_manifest(manifest_file):
     """I know how to take a filename and load it into a Manifest object"""
     if os.path.exists(manifest_file):
         manifest = Manifest()
-        with open(manifest_file, "rb") as f:
+        with open(manifest_file, "r" if PY3 else "rb") as f:
             manifest.load(f)
             log.debug("loaded manifest from file '%s'" % manifest_file)
         return manifest
     else:
         log.debug("tried to load absent file '%s' as manifest" % manifest_file)
-        raise InvalidManifest(
-            "manifest file '%s' does not exist" % manifest_file)
+        raise InvalidManifest("manifest file '%s' does not exist" % manifest_file)
 
 
 def list_manifest(manifest_file):
@@ -617,15 +771,22 @@ def list_manifest(manifest_file):
     try:
         manifest = open_manifest(manifest_file)
     except InvalidManifest as e:
-        log.error("failed to load manifest file at '%s': %s" % (
-            manifest_file,
-            str(e),
-        ))
+        log.error(
+            "failed to load manifest file at '%s': %s"
+            % (
+                manifest_file,
+                str(e),
+            )
+        )
         return False
     for f in manifest.file_records:
-        print("{}\t{}\t{}".format("P" if f.present() else "-",
-                                  "V" if f.present() and f.validate() else "-",
-                                  f.filename))
+        print(
+            "{}\t{}\t{}".format(
+                "P" if f.present() else "-",
+                "V" if f.present() and f.validate() else "-",
+                f.filename,
+            )
+        )
     return True
 
 
@@ -635,10 +796,13 @@ def validate_manifest(manifest_file):
     try:
         manifest = open_manifest(manifest_file)
     except InvalidManifest as e:
-        log.error("failed to load manifest file at '%s': %s" % (
-            manifest_file,
-            str(e),
-        ))
+        log.error(
+            "failed to load manifest file at '%s': %s"
+            % (
+                manifest_file,
+                str(e),
+            )
+        )
         return False
     invalid_files = []
     absent_files = []
@@ -677,13 +841,17 @@ def add_files(manifest_file, algorithm, filenames, version, visibility, unpack):
         log.debug("appending a new file record to manifest file")
         add = True
         for fr in old_manifest.file_records:
-            log.debug("manifest file has '%s'" % "', ".join(
-                [x.filename for x in old_manifest.file_records]))
+            log.debug(
+                "manifest file has '%s'"
+                % "', ".join([x.filename for x in old_manifest.file_records])
+            )
             if new_fr == fr:
                 log.info("file already in old_manifest")
                 add = False
             elif filename == fr.filename:
-                log.error("manifest already contains a different file named %s" % filename)
+                log.error(
+                    "manifest already contains a different file named %s" % filename
+                )
                 add = False
         if add:
             new_manifest.file_records.append(new_fr)
@@ -695,8 +863,12 @@ def add_files(manifest_file, algorithm, filenames, version, visibility, unpack):
     for old_fr in old_manifest.file_records:
         if old_fr.filename not in new_filenames:
             new_manifest.file_records.append(old_fr)
-    with open(manifest_file, **open_attrs) as output:
-        new_manifest.dump(output, fmt='json')
+    if PY3:
+        with open(manifest_file, mode="w") as output:
+            new_manifest.dump(output, fmt="json")
+    else:
+        with open(manifest_file, mode="wb") as output:
+            new_manifest.dump(output, fmt="json")
     return all_files_added
 
 
@@ -706,7 +878,17 @@ def touch(f):
     try:
         os.utime(f, None)
     except OSError:
-        log.warn('impossible to update utime of file %s' % f)
+        log.warn("impossible to update utime of file %s" % f)
+
+
+@contextmanager
+@retriable(sleeptime=2)
+def request(url, auth_file=None):
+    req = Request(url)
+    _authorize(req, auth_file)
+    with closing(urllib2.urlopen(req)) as f:
+        log.debug("opened %s for reading" % url)
+        yield f
 
 
 def fetch_file(base_urls, file_record, grabchunk=1024 * 4, auth_file=None, region=None):
@@ -717,42 +899,41 @@ def fetch_file(base_urls, file_record, grabchunk=1024 * 4, auth_file=None, regio
     fetched_path = None
     for base_url in base_urls:
         # Generate the URL for the file on the server side
-        url = urljoin(base_url,
-                      '%s/%s' % (file_record.algorithm, file_record.digest))
+        url = urljoin(base_url, "%s/%s" % (file_record.algorithm, file_record.digest))
         if region is not None:
-            url += '?region=' + region
+            url += "?region=" + region
 
         log.info("Attempting to fetch from '%s'..." % base_url)
 
         # Well, the file doesn't exist locally.  Let's fetch it.
         try:
-            req = Request(url)
-            _authorize(req, auth_file)
-            f = urllib2.urlopen(req)
-            log.debug("opened %s for reading" % url)
-            with open(temp_path, **open_attrs) as out:
+            with request(url, auth_file) as f, open(temp_path, mode="wb") as out:
                 k = True
                 size = 0
                 while k:
                     # TODO: print statistics as file transfers happen both for info and to stop
                     # buildbot timeouts
                     indata = f.read(grabchunk)
-                    if PY3:
-                        indata = to_text(indata)
                     out.write(indata)
                     size += len(indata)
                     if len(indata) == 0:
                         k = False
-                log.info("File %s fetched from %s as %s" %
-                         (file_record.filename, base_url, temp_path))
+                log.info(
+                    "File %s fetched from %s as %s"
+                    % (file_record.filename, base_url, temp_path)
+                )
                 fetched_path = temp_path
                 break
         except (URLError, HTTPError, ValueError):
-            log.info("...failed to fetch '%s' from %s" %
-                     (file_record.filename, base_url), exc_info=True)
+            log.info(
+                "...failed to fetch '%s' from %s" % (file_record.filename, base_url),
+                exc_info=True,
+            )
         except IOError:  # pragma: no cover
-            log.info("failed to write to temporary file for '%s'" %
-                     file_record.filename, exc_info=True)
+            log.info(
+                "failed to write to temporary file for '%s'" % file_record.filename,
+                exc_info=True,
+            )
 
     # cleanup temp file in case of issues
     if fetched_path:
@@ -768,16 +949,43 @@ def fetch_file(base_urls, file_record, grabchunk=1024 * 4, auth_file=None, regio
 def clean_path(dirname):
     """Remove a subtree if is exists. Helper for unpack_file()."""
     if os.path.exists(dirname):
-        log.info('rm tree: %s' % dirname)
+        log.info("rm tree: %s" % dirname)
         shutil.rmtree(dirname)
 
 
 CHECKSUM_SUFFIX = ".checksum"
 
 
+def validate_tar_member(member, path):
+    def _is_within_directory(directory, target):
+        real_directory = os.path.realpath(directory)
+        real_target = os.path.realpath(target)
+        prefix = os.path.commonprefix([real_directory, real_target])
+        return prefix == real_directory
+
+    member_path = os.path.join(path, member.name)
+    if not _is_within_directory(path, member_path):
+        raise Exception("Attempted path traversal in tar file: " + member.name)
+    if member.issym():
+        link_path = os.path.join(os.path.dirname(member_path), member.linkname)
+        if not _is_within_directory(path, link_path):
+            raise Exception("Attempted link path traversal in tar file: " + member.name)
+    if member.mode & (stat.S_ISUID | stat.S_ISGID):
+        raise Exception("Attempted setuid or setgid in tar file: " + member.name)
+
+
+def safe_extract(tar, path=".", *, numeric_owner=False):
+    def _files(tar, path):
+        for member in tar:
+            validate_tar_member(member, path)
+            yield member
+
+    tar.extractall(path, members=_files(tar, path), numeric_owner=numeric_owner)
+
+
 def unpack_file(filename):
     """Untar `filename`, assuming it is uncompressed or compressed with bzip2,
-    xz, gzip, or unzip a zip file. The file is assumed to contain a single
+    xz, gzip, zst, or unzip a zip file. The file is assumed to contain a single
     directory with a name matching the base of the given filename.
     Xz support is handled by shelling out to 'tar'."""
     if os.path.isfile(filename) and tarfile.is_tarfile(filename):
@@ -785,26 +993,34 @@ def unpack_file(filename):
         base_file, tar_ext = os.path.splitext(tar_file)
         clean_path(base_file)
         log.info('untarring "%s"' % filename)
-        tar = tarfile.open(filename)
-        tar.extractall()
-        tar.close()
-    elif os.path.isfile(filename) and filename.endswith('.tar.xz'):
-        base_file = filename.replace('.tar.xz', '')
+        with tarfile.open(filename) as tar:
+            safe_extract(tar)
+    elif os.path.isfile(filename) and filename.endswith(".tar.xz"):
+        base_file = filename.replace(".tar.xz", "")
         clean_path(base_file)
         log.info('untarring "%s"' % filename)
         # Not using tar -Jxf because it fails on Windows for some reason.
-        process = Popen(['xz', '-d', '-c', filename], stdout=PIPE)
+        process = Popen(["xz", "-d", "-c", filename], stdout=PIPE)
         stdout, stderr = process.communicate()
         if process.returncode != 0:
             return False
         fileobj = BytesIO()
         fileobj.write(stdout)
         fileobj.seek(0)
-        tar = tarfile.open(fileobj=fileobj, mode='r|')
-        tar.extractall()
-        tar.close()
+        with tarfile.open(fileobj=fileobj, mode="r|") as tar:
+            safe_extract(tar)
+    elif os.path.isfile(filename) and filename.endswith(".tar.zst"):
+        import zstandard
+
+        base_file = filename.replace(".tar.zst", "")
+        clean_path(base_file)
+        log.info('untarring "%s"' % filename)
+        dctx = zstandard.ZstdDecompressor()
+        with dctx.stream_reader(open(filename, "rb")) as fileobj:
+            with tarfile.open(fileobj=fileobj, mode="r|") as tar:
+                safe_extract(tar)
     elif os.path.isfile(filename) and zipfile.is_zipfile(filename):
-        base_file = filename.replace('.zip', '')
+        base_file = filename.replace(".zip", "")
         clean_path(base_file)
         log.info('unzipping "%s"' % filename)
         z = zipfile.ZipFile(filename)
@@ -816,16 +1032,25 @@ def unpack_file(filename):
     return True
 
 
-def fetch_files(manifest_file, base_urls, filenames=[], cache_folder=None,
-                auth_file=None, region=None):
+def fetch_files(
+    manifest_file,
+    base_urls,
+    filenames=[],
+    cache_folder=None,
+    auth_file=None,
+    region=None,
+):
     # Lets load the manifest file
     try:
         manifest = open_manifest(manifest_file)
     except InvalidManifest as e:
-        log.error("failed to load manifest file at '%s': %s" % (
-            manifest_file,
-            str(e),
-        ))
+        log.error(
+            "failed to load manifest file at '%s': %s"
+            % (
+                manifest_file,
+                str(e),
+            )
+        )
         return False
 
     # we want to track files already in current working directory AND valid
@@ -852,21 +1077,27 @@ def fetch_files(manifest_file, base_urls, filenames=[], cache_folder=None,
                 # we have an invalid file here, better to cleanup!
                 # this invalid file needs to be replaced with a good one
                 # from the local cash or fetched from a tooltool server
-                log.info("File %s is present locally but it is invalid, so I will remove it "
-                         "and try to fetch it" % f.filename)
+                log.info(
+                    "File %s is present locally but it is invalid, so I will remove it "
+                    "and try to fetch it" % f.filename
+                )
                 os.remove(os.path.join(os.getcwd(), f.filename))
 
         # check if file is already in cache
         if cache_folder and f.filename not in present_files:
             try:
-                shutil.copy(os.path.join(cache_folder, f.digest),
-                            os.path.join(os.getcwd(), f.filename))
-                log.info("File %s retrieved from local cache %s" %
-                         (f.filename, cache_folder))
+                shutil.copy(
+                    os.path.join(cache_folder, f.digest),
+                    os.path.join(os.getcwd(), f.filename),
+                )
+                log.info(
+                    "File %s retrieved from local cache %s" % (f.filename, cache_folder)
+                )
                 touch(os.path.join(cache_folder, f.digest))
 
                 filerecord_for_validation = FileRecord(
-                    f.filename, f.size, f.digest, f.algorithm)
+                    f.filename, f.size, f.digest, f.algorithm
+                )
                 if filerecord_for_validation.validate():
                     present_files.append(f.filename)
                     if f.unpack:
@@ -874,13 +1105,17 @@ def fetch_files(manifest_file, base_urls, filenames=[], cache_folder=None,
                 else:
                     # the file copied from the cache is invalid, better to
                     # clean up the cache version itself as well
-                    log.warn("File %s retrieved from cache is invalid! I am deleting it from the "
-                             "cache as well" % f.filename)
+                    log.warn(
+                        "File %s retrieved from cache is invalid! I am deleting it from the "
+                        "cache as well" % f.filename
+                    )
                     os.remove(os.path.join(os.getcwd(), f.filename))
                     os.remove(os.path.join(cache_folder, f.digest))
             except IOError:
-                log.info("File %s not present in local cache folder %s" %
-                         (f.filename, cache_folder))
+                log.info(
+                    "File %s not present in local cache folder %s"
+                    % (f.filename, cache_folder)
+                )
 
         # now I will try to fetch all files which are not already present and
         # valid, appending a suffix to avoid race conditions
@@ -889,9 +1124,13 @@ def fetch_files(manifest_file, base_urls, filenames=[], cache_folder=None,
         # is a non empty list it can be used to filter if filename is in
         # present_files, it means that I have it already because it was already
         # either in the working dir or in the cache
-        if (f.filename in filenames or len(filenames) == 0) and f.filename not in present_files:
+        if (
+            f.filename in filenames or len(filenames) == 0
+        ) and f.filename not in present_files:
             log.debug("fetching %s" % f.filename)
-            temp_file_name = fetch_file(base_urls, f, auth_file=auth_file, region=region)
+            temp_file_name = fetch_file(
+                base_urls, f, auth_file=auth_file, region=region
+            )
             if temp_file_name:
                 fetched_files.append((f, temp_file_name))
             else:
@@ -905,15 +1144,20 @@ def fetch_files(manifest_file, base_urls, filenames=[], cache_folder=None,
         # this is why filerecord_for_validation is created
 
         filerecord_for_validation = FileRecord(
-            temp_file_name, localfile.size, localfile.digest, localfile.algorithm)
+            temp_file_name, localfile.size, localfile.digest, localfile.algorithm
+        )
 
         if filerecord_for_validation.validate():
             # great!
             # I can rename the temp file
-            log.info("File integrity verified, renaming %s to %s" %
-                     (temp_file_name, localfile.filename))
-            os.rename(os.path.join(os.getcwd(), temp_file_name),
-                      os.path.join(os.getcwd(), localfile.filename))
+            log.info(
+                "File integrity verified, renaming %s to %s"
+                % (temp_file_name, localfile.filename)
+            )
+            os.rename(
+                os.path.join(os.getcwd(), temp_file_name),
+                os.path.join(os.getcwd(), localfile.filename),
+            )
 
             if localfile.unpack:
                 unpack_files.append(localfile.filename)
@@ -926,14 +1170,21 @@ def fetch_files(manifest_file, base_urls, filenames=[], cache_folder=None,
                     if not os.path.exists(cache_folder):
                         log.info("Creating cache in %s..." % cache_folder)
                         os.makedirs(cache_folder, 0o0700)
-                    shutil.copy(os.path.join(os.getcwd(), localfile.filename),
-                                os.path.join(cache_folder, localfile.digest))
-                    log.info("Local cache %s updated with %s" % (cache_folder,
-                                                                 localfile.filename))
+                    shutil.copy(
+                        os.path.join(os.getcwd(), localfile.filename),
+                        os.path.join(cache_folder, localfile.digest),
+                    )
+                    log.info(
+                        "Local cache %s updated with %s"
+                        % (cache_folder, localfile.filename)
+                    )
                     touch(os.path.join(cache_folder, localfile.digest))
                 except (OSError, IOError):
-                    log.warning('Impossible to add file %s to cache folder %s' %
-                                (localfile.filename, cache_folder), exc_info=True)
+                    log.warning(
+                        "Impossible to add file %s to cache folder %s"
+                        % (localfile.filename, cache_folder),
+                        exc_info=True,
+                    )
         else:
             failed_files.append(localfile.filename)
             log.error("'%s'" % filerecord_for_validation.describe())
@@ -946,20 +1197,18 @@ def fetch_files(manifest_file, base_urls, filenames=[], cache_folder=None,
 
     # If we failed to fetch or validate a file, we need to fail
     if len(failed_files) > 0:
-        log.error("The following files failed: '%s'" %
-                  "', ".join(failed_files))
+        log.error("The following files failed: '%s'" % "', ".join(failed_files))
         return False
     return True
 
 
 def freespace(p):
     "Returns the number of bytes free under directory `p`"
-    if sys.platform == 'win32':  # pragma: no cover
+    if sys.platform == "win32":  # pragma: no cover
         # os.statvfs doesn't work on Windows
         import win32file
 
-        secsPerClus, bytesPerSec, nFreeClus, totClus = win32file.GetDiskFreeSpace(
-            p)
+        secsPerClus, bytesPerSec, nFreeClus, totClus = win32file.GetDiskFreeSpace(p)
         return secsPerClus * bytesPerSec * nFreeClus
     else:
         r = os.statvfs(p)
@@ -1000,94 +1249,102 @@ def purge(folder, gigs):
 
 
 def _log_api_error(e):
-    if hasattr(e, 'hdrs') and e.hdrs['content-type'] == 'application/json':
+    if hasattr(e, "hdrs") and e.hdrs["content-type"] == "application/json":
         json_resp = json.load(e.fp)
-        log.error("%s: %s" % (json_resp['error']['name'],
-                              json_resp['error']['description']))
+        log.error(
+            "%s: %s" % (json_resp["error"]["name"], json_resp["error"]["description"])
+        )
     else:
         log.exception("Error making RelengAPI request:")
 
 
 def _authorize(req, auth_file):
-    if not auth_file:
-        return
-
     is_taskcluster_auth = False
-    with open(auth_file) as f:
-        auth_file_content = f.read().strip()
+
+    if not auth_file:
         try:
-            auth_file_content = json.loads(auth_file_content)
+            taskcluster_env_keys = {
+                "clientId": "TASKCLUSTER_CLIENT_ID",
+                "accessToken": "TASKCLUSTER_ACCESS_TOKEN",
+            }
+            auth_content = {k: os.environ[v] for k, v in taskcluster_env_keys.items()}
             is_taskcluster_auth = True
-        except Exception:
-            pass
+        except KeyError:
+            return
+    else:
+        with open(auth_file) as f:
+            auth_content = f.read().strip()
+            try:
+                auth_content = json.loads(auth_content)
+                is_taskcluster_auth = True
+            except Exception:
+                pass
 
     if is_taskcluster_auth:
-        taskcluster_header = make_taskcluster_header(auth_file_content, req)
+        taskcluster_header = make_taskcluster_header(auth_content, req)
         log.debug("Using taskcluster credentials in %s" % auth_file)
-        req.add_unredirected_header('Authorization', taskcluster_header)
+        req.add_unredirected_header("Authorization", taskcluster_header)
     else:
         log.debug("Using Bearer token in %s" % auth_file)
-        req.add_unredirected_header('Authorization', 'Bearer %s' % auth_file_content)
+        req.add_unredirected_header("Authorization", "Bearer %s" % auth_content)
 
 
 def _send_batch(base_url, auth_file, batch, region):
-    url = urljoin(base_url, 'upload')
+    url = urljoin(base_url, "upload")
     if region is not None:
         url += "?region=" + region
+    data = json.dumps(batch)
     if PY3:
-        data = to_binary(json.dumps(batch))
-    else:
-        data = json.dumps(batch)
-    req = Request(url, data, {'Content-Type': 'application/json'})
+        data = data.encode("utf-8")
+    req = Request(url, data, {"Content-Type": "application/json"})
     _authorize(req, auth_file)
     try:
         resp = urllib2.urlopen(req)
     except (URLError, HTTPError) as e:
         _log_api_error(e)
         return None
-    return json.load(resp)['result']
+    return json.load(resp)["result"]
 
 
 def _s3_upload(filename, file):
     # urllib2 does not support streaming, so we fall back to good old httplib
-    url = urlparse(file['put_url'])
-    cls = HTTPSConnection if url.scheme == 'https' else HTTPConnection
-    host, port = url.netloc.split(':') if ':' in url.netloc else (url.netloc, 443)
+    url = urlparse(file["put_url"])
+    cls = HTTPSConnection if url.scheme == "https" else HTTPConnection
+    host, port = url.netloc.split(":") if ":" in url.netloc else (url.netloc, 443)
     port = int(port)
     conn = cls(host, port)
     try:
         req_path = "%s?%s" % (url.path, url.query) if url.query else url.path
-        with open(filename, 'rb') as f:
+        with open(filename, "rb") as f:
             content = f.read()
             content_length = len(content)
             f.seek(0)
             conn.request(
-                'PUT',
+                "PUT",
                 req_path,
                 f,
                 {
-                    'Content-Type': 'application/octet-stream',
-                    'Content-Length': str(content_length),
+                    "Content-Type": "application/octet-stream",
+                    "Content-Length": str(content_length),
                 },
             )
             resp = conn.getresponse()
             resp_body = resp.read()
             conn.close()
         if resp.status != 200:
-            raise RuntimeError("Non-200 return from AWS: %s %s\n%s" %
-                               (resp.status, resp.reason, resp_body))
+            raise RuntimeError(
+                "Non-200 return from AWS: %s %s\n%s"
+                % (resp.status, resp.reason, resp_body)
+            )
     except Exception:
-        file['upload_exception'] = sys.exc_info()
-        file['upload_ok'] = False
+        file["upload_exception"] = sys.exc_info()
+        file["upload_ok"] = False
     else:
-        file['upload_ok'] = True
+        file["upload_ok"] = True
 
 
 def _notify_upload_complete(base_url, auth_file, file):
-    req = Request(
-        urljoin(
-            base_url,
-            'upload/complete/%(algorithm)s/%(digest)s' % file))
+    req = Request(urljoin(base_url, "upload/complete/%(algorithm)s/%(digest)s" % file))
     _authorize(req, auth_file)
     try:
         urllib2.urlopen(req)
@@ -1097,7 +1354,7 @@ def _notify_upload_complete(base_url, auth_file, file):
             return
         # 409 indicates that the upload URL hasn't expired yet and we
         # should retry after a delay
-        to_wait = int(e.headers.get('X-Retry-After', 60))
+        to_wait = int(e.headers.get("X-Retry-After", 60))
         log.warning("Waiting %d seconds for upload URLs to expire" % to_wait)
         time.sleep(to_wait)
         _notify_upload_complete(base_url, auth_file, file)
@@ -1114,39 +1371,38 @@ def upload(manifest, message, base_urls, auth_file, region):
 
     # verify the manifest, since we'll need the files present to upload
     if not manifest.validate():
-        log.error('manifest is invalid')
+        log.error("manifest is invalid")
         return False
 
     if any(fr.visibility is None for fr in manifest.file_records):
-        log.error('All files in a manifest for upload must have a visibility set')
+        log.error("All files in a manifest for upload must have a visibility set")
 
     # convert the manifest to an upload batch
     batch = {
-        'message': message,
-        'files': {},
+        "message": message,
+        "files": {},
     }
     for fr in manifest.file_records:
-        batch['files'][fr.filename] = {
-            'size': fr.size,
-            'digest': fr.digest,
-            'algorithm': fr.algorithm,
-            'visibility': fr.visibility,
+        batch["files"][fr.filename] = {
+            "size": fr.size,
+            "digest": fr.digest,
+            "algorithm": fr.algorithm,
+            "visibility": fr.visibility,
         }
 
     # make the upload request
     resp = _send_batch(base_urls[0], auth_file, batch, region)
     if not resp:
         return None
-    files = resp['files']
+    files = resp["files"]
 
     # Upload the files, each in a thread.  This allows us to start all of the
     # uploads before any of the URLs expire.
     threads = {}
     for filename, file in files.items():
-        if 'put_url' in file:
+        if "put_url" in file:
             log.info("%s: starting upload" % (filename,))
-            thd = threading.Thread(target=_s3_upload,
-                                   args=(filename, file))
+            thd = threading.Thread(target=_s3_upload, args=(filename, file))
             thd.daemon = 1
             thd.start()
             threads[filename] = thd
@@ -1161,11 +1417,12 @@ def upload(manifest, message, base_urls, auth_file, region):
                 # _s3_upload has annotated file with result information
                 file = files[filename]
                 thread.join()
-                if file['upload_ok']:
+                if file["upload_ok"]:
                     log.info("%s: uploaded" % filename)
                 else:
-                    log.error("%s: failed" % filename,
-                              exc_info=file['upload_exception'])
+                    log.error(
+                        "%s: failed" % filename, exc_info=file["upload_exception"]
+                    )
                     success = False
                 del threads[filename]
 
@@ -1173,54 +1430,120 @@ def upload(manifest, message, base_urls, auth_file, region):
     # fails, we don't consider that an error (the server will notice
     # eventually)
     for filename, file in files.items():
-        if 'put_url' in file and file['upload_ok']:
+        if "put_url" in file and file["upload_ok"]:
             log.info("notifying server of upload completion for %s" % (filename,))
             _notify_upload_complete(base_urls[0], auth_file, file)
 
     return success
 
 
+def send_operation_on_file(data, base_urls, digest, auth_file):
+    url = base_urls[0]
+    url = urljoin(url, "file/sha512/" + digest)
+
+    data = json.dumps(data)
+
+    req = Request(url, data, {"Content-Type": "application/json"})
+    req.get_method = lambda: "PATCH"
+
+    _authorize(req, auth_file)
+
+    try:
+        urllib2.urlopen(req)
+    except (URLError, HTTPError) as e:
+        _log_api_error(e)
+        return False
+    return True
+
+
+def change_visibility(base_urls, digest, visibility, auth_file):
+    data = [
+        {
+            "op": "set_visibility",
+            "visibility": visibility,
+        }
+    ]
+    return send_operation_on_file(data, base_urls, digest, auth_file)
+
+
+def delete_instances(base_urls, digest, auth_file):
+    data = [
+        {
+            "op": "delete_instances",
+        }
+    ]
+    return send_operation_on_file(data, base_urls, digest, auth_file)
+
+
 def process_command(options, args):
-    """ I know how to take a list of program arguments and
+    """I know how to take a list of program arguments and
     start doing the right thing with them"""
     cmd = args[0]
     cmd_args = args[1:]
-    log.debug("processing '%s' command with args '%s'" %
-              (cmd, '", "'.join(cmd_args)))
+    log.debug("processing '%s' command with args '%s'" % (cmd, '", "'.join(cmd_args)))
     log.debug("using options: %s" % options)
 
-    if cmd == 'list':
-        return list_manifest(options['manifest'])
-    if cmd == 'validate':
-        return validate_manifest(options['manifest'])
-    elif cmd == 'add':
-        return add_files(options['manifest'], options['algorithm'], cmd_args,
-                         options['version'], options['visibility'],
-                         options['unpack'])
-    elif cmd == 'purge':
-        if options['cache_folder']:
-            purge(folder=options['cache_folder'], gigs=options['size'])
+    if cmd == "list":
+        return list_manifest(options["manifest"])
+    if cmd == "validate":
+        return validate_manifest(options["manifest"])
+    elif cmd == "add":
+        return add_files(
+            options["manifest"],
+            options["algorithm"],
+            cmd_args,
+            options["version"],
+            options["visibility"],
+            options["unpack"],
+        )
+    elif cmd == "purge":
+        if options["cache_folder"]:
+            purge(folder=options["cache_folder"], gigs=options["size"])
         else:
-            log.critical('please specify the cache folder to be purged')
+            log.critical("please specify the cache folder to be purged")
             return False
-    elif cmd == 'fetch':
+    elif cmd == "fetch":
         return fetch_files(
-            options['manifest'],
-            options['base_url'],
+            options["manifest"],
+            options["base_url"],
             cmd_args,
-            cache_folder=options['cache_folder'],
+            cache_folder=options["cache_folder"],
             auth_file=options.get("auth_file"),
-            region=options.get('region'))
-    elif cmd == 'upload':
-        if not options.get('message'):
-            log.critical('upload command requires a message')
+            region=options.get("region"),
+        )
+    elif cmd == "upload":
+        if not options.get("message"):
+            log.critical("upload command requires a message")
             return False
         return upload(
-            options.get('manifest'),
-            options.get('message'),
-            options.get('base_url'),
-            options.get('auth_file'),
-            options.get('region'))
+            options.get("manifest"),
+            options.get("message"),
+            options.get("base_url"),
+            options.get("auth_file"),
+            options.get("region"),
+        )
+    elif cmd == "change-visibility":
+        if not options.get("digest"):
+            log.critical("change-visibility command requires a digest option")
+            return False
+        if not options.get("visibility"):
+            log.critical("change-visibility command requires a visibility option")
+            return False
+        return change_visibility(
+            options.get("base_url"),
+            options.get("digest"),
+            options.get("visibility"),
+            options.get("auth_file"),
+        )
+    elif cmd == "delete":
+        if not options.get("digest"):
+            log.critical("change-visibility command requires a digest option")
+            return False
+        return delete_instances(
+            options.get("base_url"),
+            options.get("digest"),
+            options.get("auth_file"),
+        )
     else:
         log.critical('command "%s" is not implemented' % cmd)
         return False
@@ -1229,62 +1552,127 @@ def process_command(options, args):
 def main(argv, _skip_logging=False):
     # Set up option parsing
     parser = optparse.OptionParser()
-    parser.add_option('-q', '--quiet', default=logging.INFO,
-                      dest='loglevel', action='store_const', const=logging.ERROR)
-    parser.add_option('-v', '--verbose',
-                      dest='loglevel', action='store_const', const=logging.DEBUG)
-    parser.add_option('-m', '--manifest', default=DEFAULT_MANIFEST_NAME,
-                      dest='manifest', action='store',
-                      help='specify the manifest file to be operated on')
-    parser.add_option('-d', '--algorithm', default='sha512',
-                      dest='algorithm', action='store',
-                      help='hashing algorithm to use (only sha512 is allowed)')
-    parser.add_option('--visibility', default=None,
-                      dest='visibility', choices=['internal', 'public'],
-                      help='Visibility level of this file; "internal" is for '
-                           'files that cannot be distributed out of the company '
-                           'but not for secrets; "public" files are available to '
-                           'anyone without restriction')
-    parser.add_option('--unpack', default=False,
-                      dest='unpack', action='store_true',
-                      help='Request unpacking this file after fetch.'
-                           ' This is helpful with tarballs.')
-    parser.add_option('--version', default=None,
-                      dest='version', action='store',
-                      help='Version string for this file. This annotates the '
-                           'manifest entry with a version string to help '
-                           'identify the contents.')
-    parser.add_option('-o', '--overwrite', default=False,
-                      dest='overwrite', action='store_true',
-                      help='UNUSED; present for backward compatibility')
-    parser.add_option('--url', dest='base_url', action='append',
-                      help='RelengAPI URL ending with /tooltool/; default '
-                      'is appropriate for Mozilla')
-    parser.add_option('-c', '--cache-folder', dest='cache_folder',
-                      help='Local cache folder')
-    parser.add_option('-s', '--size',
-                      help='free space required (in GB)', dest='size',
-                      type='float', default=0.)
-    parser.add_option('-r', '--region', help='Preferred AWS region for upload or fetch; '
-                      'example: --region=us-west-2')
-    parser.add_option('--message',
-                      help='The "commit message" for an upload; format with a bug number '
-                           'and brief comment',
-                      dest='message')
-    parser.add_option('--authentication-file',
-                      help='Use the RelengAPI token found in the given file to '
-                           'authenticate to the RelengAPI server.',
-                      dest='auth_file')
+    parser.add_option(
+        "-q",
+        "--quiet",
+        default=logging.INFO,
+        dest="loglevel",
+        action="store_const",
+        const=logging.ERROR,
+    )
+    parser.add_option(
+        "-v", "--verbose", dest="loglevel", action="store_const", const=logging.DEBUG
+    )
+    parser.add_option(
+        "-m",
+        "--manifest",
+        default=DEFAULT_MANIFEST_NAME,
+        dest="manifest",
+        action="store",
+        help="specify the manifest file to be operated on",
+    )
+    parser.add_option(
+        "-d",
+        "--algorithm",
+        default="sha512",
+        dest="algorithm",
+        action="store",
+        help="hashing algorithm to use (only sha512 is allowed)",
+    )
+    parser.add_option(
+        "--digest",
+        default=None,
+        dest="digest",
+        action="store",
+        help="digest hash to change visibility for",
+    )
+    parser.add_option(
+        "--visibility",
+        default=None,
+        dest="visibility",
+        choices=["internal", "public"],
+        help='Visibility level of this file; "internal" is for '
+        "files that cannot be distributed out of the company "
+        'but not for secrets; "public" files are available to '
+        "anyone without restriction",
+    )
+    parser.add_option(
+        "--unpack",
+        default=False,
+        dest="unpack",
+        action="store_true",
+        help="Request unpacking this file after fetch."
+        " This is helpful with tarballs.",
+    )
+    parser.add_option(
+        "--version",
+        default=None,
+        dest="version",
+        action="store",
+        help="Version string for this file. This annotates the "
+        "manifest entry with a version string to help "
+        "identify the contents.",
+    )
+    parser.add_option(
+        "-o",
+        "--overwrite",
+        default=False,
+        dest="overwrite",
+        action="store_true",
+        help="UNUSED; present for backward compatibility",
+    )
+    parser.add_option(
+        "--url",
+        dest="base_url",
+        action="append",
+        help="RelengAPI URL ending with /tooltool/; default "
+        "is appropriate for Mozilla",
+    )
+    parser.add_option(
+        "-c", "--cache-folder", dest="cache_folder", help="Local cache folder"
+    )
+    parser.add_option(
+        "-s",
+        "--size",
+        help="free space required (in GB)",
+        dest="size",
+        type="float",
+        default=0.0,
+    )
+    parser.add_option(
+        "-r",
+        "--region",
+        help="Preferred AWS region for upload or fetch; " "example: --region=us-west-2",
+    )
+    parser.add_option(
+        "--message",
+        help='The "commit message" for an upload; format with a bug number '
+        "and brief comment",
+        dest="message",
+    )
+    parser.add_option(
+        "--authentication-file",
+        help="Use the RelengAPI token found in the given file to "
+        "authenticate to the RelengAPI server.",
+        dest="auth_file",
+    )
 
     (options_obj, args) = parser.parse_args(argv[1:])
 
-    # default the options list if not provided
     if not options_obj.base_url:
-        options_obj.base_url = ['https://tooltool.mozilla-releng.net/']
+        tooltool_host = os.environ.get("TOOLTOOL_HOST", "tooltool.mozilla-releng.net")
+        taskcluster_proxy_url = os.environ.get("TASKCLUSTER_PROXY_URL")
+        if taskcluster_proxy_url:
+            tooltool_url = "{}/{}".format(taskcluster_proxy_url, tooltool_host)
+        else:
+            tooltool_url = "https://{}".format(tooltool_host)
+
+        options_obj.base_url = [tooltool_url]
 
     # ensure all URLs have a trailing slash
     def add_slash(url):
-        return url if url.endswith('/') else (url + '/')
+        return url if url.endswith("/") else (url + "/")
+
     options_obj.base_url = [add_slash(u) for u in options_obj.base_url]
 
     # expand ~ in --authentication-file
@@ -1294,7 +1682,7 @@ def main(argv, _skip_logging=False):
     # Dictionaries are easier to work with
     options = vars(options_obj)
 
-    log.setLevel(options['loglevel'])
+    log.setLevel(options["loglevel"])
 
     # Set up logging, for now just to the console
     if not _skip_logging:  # pragma: no cover
@@ -1303,11 +1691,11 @@ def main(argv, _skip_logging=False):
         ch.setFormatter(cf)
         log.addHandler(ch)
 
-    if options['algorithm'] != 'sha512':
-        parser.error('only --algorithm sha512 is supported')
+    if options["algorithm"] != "sha512":
+        parser.error("only --algorithm sha512 is supported")
 
     if len(args) < 1:
-        parser.error('You must specify a command')
+        parser.error("You must specify a command")
 
     return 0 if process_command(options, args) else 1
 
diff --git a/tests/wpt/web-platform-tests/tools/webdriver/webdriver/bidi/error.py b/tests/wpt/web-platform-tests/tools/webdriver/webdriver/bidi/error.py
index 1b65d225fae..81910a63eb2 100644
--- a/tests/wpt/web-platform-tests/tools/webdriver/webdriver/bidi/error.py
+++ b/tests/wpt/web-platform-tests/tools/webdriver/webdriver/bidi/error.py
@@ -39,6 +39,10 @@ class NoSuchFrameException(BidiException):
     error_code = "no such frame"
 
 
+class NoSuchNodeException(BidiException):
+    error_code = "no such node"
+
+
 class NoSuchScriptException(BidiException):
     error_code = "no such script"
 
diff --git a/tests/wpt/web-platform-tests/tools/webdriver/webdriver/bidi/modules/browsing_context.py b/tests/wpt/web-platform-tests/tools/webdriver/webdriver/bidi/modules/browsing_context.py
index 033929d5ff5..abaf569f928 100644
--- a/tests/wpt/web-platform-tests/tools/webdriver/webdriver/bidi/modules/browsing_context.py
+++ b/tests/wpt/web-platform-tests/tools/webdriver/webdriver/bidi/modules/browsing_context.py
@@ -1,5 +1,5 @@
 import base64
-from typing import Any, Optional, Mapping, MutableMapping
+from typing import Any, List, Mapping, MutableMapping, Optional
 
 from ._module import BidiModule, command
 
@@ -80,3 +80,41 @@ class BrowsingContext(BidiModule):
         assert isinstance(result["url"], str)
 
         return result
+
+    @command
+    def print(
+        self,
+        context: str,
+        background: Optional[bool] = None,
+        margin: Optional[Mapping[str, Any]] = None,
+        orientation: Optional[str] = None,
+        page: Optional[Mapping[str, Any]] = None,
+        page_ranges: Optional[List[str]] = None,
+        scale: Optional[float] = None,
+        shrink_to_fit: Optional[bool] = None
+    ) -> Mapping[str, Any]:
+        params: MutableMapping[str, Any] = {
+            "context": context
+        }
+
+        if background is not None:
+            params["background"] = background
+        if margin is not None:
+            params["margin"] = margin
+        if orientation is not None:
+            params["orientation"] = orientation
+        if page is not None:
+            params["page"] = page
+        if page_ranges is not None:
+            params["pageRanges"] = page_ranges
+        if scale is not None:
+            params["scale"] = scale
+        if shrink_to_fit is not None:
+            params["shrinkToFit"] = shrink_to_fit
+
+        return params
+
+    @print.result
+    def _print(self, result: Mapping[str, Any]) -> Any:
+        assert result["data"] is not None
+        return result["data"]
diff --git a/tests/wpt/web-platform-tests/tools/webdriver/webdriver/client.py b/tests/wpt/web-platform-tests/tools/webdriver/webdriver/client.py
index ba01e1fe866..851c6722fc2 100644
--- a/tests/wpt/web-platform-tests/tools/webdriver/webdriver/client.py
+++ b/tests/wpt/web-platform-tests/tools/webdriver/webdriver/client.py
@@ -807,13 +807,12 @@ class Element:
     """
     identifier = "element-6066-11e4-a52e-4f735466cecf"
 
-    def __init__(self, id, session):
+    def __init__(self, session, id):
         """
         Construct a new web element representation.
 
-        :param id: Web element UUID which must be unique across
-            all browsing contexts.
         :param session: Current ``webdriver.Session``.
+        :param id: Web element UUID which must be unique across all browsing contexts.
         """
         self.id = id
         self.session = session
@@ -828,7 +827,7 @@ class Element:
     @classmethod
     def from_json(cls, json, session):
         uuid = json[Element.identifier]
-        return cls(uuid, session)
+        return cls(session, uuid)
 
     def send_element_command(self, method, uri, body=None):
         url = "element/%s/%s" % (self.id, uri)
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/testloader.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/testloader.py
index 93e2a87826c..78e05264d4d 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/testloader.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/testloader.py
@@ -164,10 +164,8 @@ class TagFilter:
     def __init__(self, tags):
         self.tags = set(tags)
 
-    def __call__(self, test_iter):
-        for test in test_iter:
-            if test.tags & self.tags:
-                yield test
+    def __call__(self, test):
+        return test.tags & self.tags
 
 
 class ManifestLoader:
@@ -214,6 +212,7 @@ class TestLoader:
                  test_types,
                  run_info,
                  manifest_filters=None,
+                 test_filters=None,
                  chunk_type="none",
                  total_chunks=1,
                  chunk_number=1,
@@ -228,6 +227,7 @@ class TestLoader:
         self.run_info = run_info
 
         self.manifest_filters = manifest_filters if manifest_filters is not None else []
+        self.test_filters = test_filters if test_filters is not None else []
 
         self.manifests = test_manifests
         self.tests = None
@@ -310,7 +310,9 @@ class TestLoader:
 
             inherit_metadata, test_metadata = self.load_metadata(manifest_file, metadata_path, test_path)
             for test in tests:
-                yield test_path, test_type, self.get_test(manifest_file, test, inherit_metadata, test_metadata)
+                wpt_test = self.get_test(manifest_file, test, inherit_metadata, test_metadata)
+                if all(f(wpt_test) for f in self.test_filters):
+                    yield test_path, test_type, wpt_test
 
     def _load_tests(self):
         """Read in the tests from the manifest file and add them to a queue"""
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_testloader.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_testloader.py
index 0936c54ea97..8c8d02a22b9 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_testloader.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_testloader.py
@@ -7,7 +7,7 @@ import tempfile
 import pytest
 
 from mozlog import structured
-from ..testloader import TestFilter as Filter, TestLoader as Loader
+from ..testloader import TestFilter, TestLoader, TagFilter
 from ..testloader import read_include_from_file
 from .test_wpttest import make_mock_manifest
 
@@ -46,19 +46,20 @@ def test_loader_h2_tests():
     manifest = WPTManifest.from_json("/", manifest_json)
 
     # By default, the loader should include the h2 test.
-    loader = Loader({manifest: {"metadata_path": ""}}, ["testharness"], None)
+    loader = TestLoader({manifest: {"metadata_path": ""}}, ["testharness"], None)
     assert "testharness" in loader.tests
     assert len(loader.tests["testharness"]) == 2
     assert len(loader.disabled_tests) == 0
 
     # We can also instruct it to skip them.
-    loader = Loader({manifest: {"metadata_path": ""}}, ["testharness"], None, include_h2=False)
+    loader = TestLoader({manifest: {"metadata_path": ""}}, ["testharness"], None, include_h2=False)
     assert "testharness" in loader.tests
     assert len(loader.tests["testharness"]) == 1
     assert "testharness" in loader.disabled_tests
     assert len(loader.disabled_tests["testharness"]) == 1
     assert loader.disabled_tests["testharness"][0].url == "/a/bar.h2.html"
 
+
 @pytest.mark.xfail(sys.platform == "win32",
                    reason="NamedTemporaryFile cannot be reopened on Win32")
 def test_include_file():
@@ -82,6 +83,7 @@ def test_include_file():
         assert "/foo/idlharness.https.any.html" in include
         assert "/foo/idlharness.https.any.worker.html" in include
 
+
 @pytest.mark.xfail(sys.platform == "win32",
                    reason="NamedTemporaryFile cannot be reopened on Win32")
 def test_filter_unicode():
@@ -92,4 +94,44 @@ def test_filter_unicode():
         f.write(include_ini.encode('utf-8'))
         f.flush()
 
-        Filter(manifest_path=f.name, test_manifests=tests)
+        TestFilter(manifest_path=f.name, test_manifests=tests)
+
+
+def test_loader_filter_tags():
+    manifest_json = {
+        "items": {
+            "testharness": {
+                "a": {
+                    "foo.html": [
+                        "abcdef123456",
+                        [None, {}],
+                    ],
+                    "bar.html": [
+                        "uvwxyz987654",
+                        [None, {}],
+                    ],
+                }
+            }
+        },
+        "url_base": "/",
+        "version": 8,
+    }
+    manifest = WPTManifest.from_json("/", manifest_json)
+
+    tmpdir_kwargs = {}
+    if sys.version_info.major >= 3 and sys.version_info.minor >= 10:
+        tmpdir_kwargs["ignore_cleanup_errors"] = True
+    with tempfile.TemporaryDirectory(**tmpdir_kwargs) as metadata_path:
+        a_path = os.path.join(metadata_path, "a")
+        os.makedirs(a_path)
+        with open(os.path.join(a_path, "bar.html.ini"), "w") as f:
+            f.write("tags: [test-include]\n")
+
+        loader = TestLoader({manifest: {"metadata_path": metadata_path}}, ["testharness"], None)
+        assert len(loader.tests["testharness"]) == 2
+
+        loader = TestLoader({manifest: {"metadata_path": metadata_path}}, ["testharness"], None,
+                            test_filters=[TagFilter({"test-include"})])
+        assert len(loader.tests["testharness"]) == 1
+        assert loader.tests["testharness"][0].id == "/a/bar.html"
+        assert loader.tests["testharness"][0].tags == {"dir:a", "test-include"}
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wptrunner.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wptrunner.py
index 224a4fde4df..740bb7e9f42 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wptrunner.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wptrunner.py
@@ -62,10 +62,12 @@ def get_loader(test_paths, product, debug=None, run_info_extras=None, chunker_kw
                                     device_serials=kwargs.get("device_serial"),
                                     adb_binary=kwargs.get("adb_binary"))
 
-    test_manifests = testloader.ManifestLoader(test_paths, force_manifest_update=kwargs["manifest_update"],
+    test_manifests = testloader.ManifestLoader(test_paths,
+                                               force_manifest_update=kwargs["manifest_update"],
                                                manifest_download=kwargs["manifest_download"]).load()
 
     manifest_filters = []
+    test_filters = []
 
     include = kwargs["include"]
     if kwargs["include_file"]:
@@ -74,6 +76,9 @@ def get_loader(test_paths, product, debug=None, run_info_extras=None, chunker_kw
     if test_groups:
         include = testloader.update_include_for_groups(test_groups, include)
 
+    if kwargs["tags"]:
+        test_filters.append(testloader.TagFilter(kwargs["tags"]))
+
     if include or kwargs["exclude"] or kwargs["include_manifest"] or kwargs["default_exclude"]:
         manifest_filters.append(testloader.TestFilter(include=include,
                                                       exclude=kwargs["exclude"],
@@ -87,6 +92,7 @@ def get_loader(test_paths, product, debug=None, run_info_extras=None, chunker_kw
                                         kwargs["test_types"],
                                         run_info,
                                         manifest_filters=manifest_filters,
+                                        test_filters=test_filters,
                                         chunk_type=kwargs["chunk_type"],
                                         total_chunks=kwargs["total_chunks"],
                                         chunk_number=kwargs["this_chunk"],
diff --git a/tests/wpt/web-platform-tests/top-level-storage-access-api/tentative/requestStorageAccessForOrigin.sub.https.window.js b/tests/wpt/web-platform-tests/top-level-storage-access-api/tentative/requestStorageAccessForOrigin.sub.https.window.js
index 76e5bf83b1e..6fff9e9189e 100644
--- a/tests/wpt/web-platform-tests/top-level-storage-access-api/tentative/requestStorageAccessForOrigin.sub.https.window.js
+++ b/tests/wpt/web-platform-tests/top-level-storage-access-api/tentative/requestStorageAccessForOrigin.sub.https.window.js
@@ -58,6 +58,7 @@ test(
 promise_setup(async () => {
   await test_driver.set_permission(
     { name: 'top-level-storage-access', requestedOrigin }, 'prompt');
+  await test_driver.set_permission({name: 'storage-access'}, 'prompt');
 });
 
 promise_test(
@@ -110,6 +111,29 @@ if (topLevelDocument) {
     '[' + testPrefix +
     '] document.requestStorageAccessForOrigin() should be resolved without a user gesture with an existing permission');
 
+  promise_test(
+      async t => {
+        const altOrigin = 'https://{{hosts[alt][www]}}:{{ports[https][0]}}';
+        t.add_cleanup(async () => {
+          await test_driver.set_permission(
+              {name: 'top-level-storage-access', requestedOrigin: altOrigin},
+              'prompt');
+          await test_driver.set_permission({name: 'storage-access'}, 'prompt');
+        });
+        await test_driver.set_permission(
+            {name: 'top-level-storage-access', requestedOrigin: altOrigin},
+            'granted');
+
+        await RunCallbackWithGesture(() => {
+          document.requestStorageAccessForOrigin(altOrigin).then(() => {
+            RunTestsInIFrame(
+                'https://{{hosts[alt][www]}}:{{ports[https][0]}}/top-level-storage-access-api/tentative/resources/requestStorageAccess-integration-iframe.https.html');
+          });
+        });
+      },
+      '[' + testPrefix +
+          '] document.requestStorageAccess() should be resolved without a user gesture after a successful requestStorageAccessForOrigin() call');
+
   // Create a test with a single-child same-origin iframe.
   // This will validate that calls to requestStorageAccessForOrigin are rejected
   // in non-top-level contexts.
diff --git a/tests/wpt/web-platform-tests/top-level-storage-access-api/tentative/resources/requestStorageAccess-integration-iframe.https.html b/tests/wpt/web-platform-tests/top-level-storage-access-api/tentative/resources/requestStorageAccess-integration-iframe.https.html
new file mode 100644
index 00000000000..f4db5cf65ec
--- /dev/null
+++ b/tests/wpt/web-platform-tests/top-level-storage-access-api/tentative/resources/requestStorageAccess-integration-iframe.https.html
@@ -0,0 +1,15 @@
+<!doctype html>
+<meta charset=utf-8>
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<!-- no testharnessreport.js -->
+<script src="../../storage-access-api/helpers.js"></script>
+<div id=log></div>
+<script>
+  promise_test(
+  async t =>  document.requestStorageAccess(),
+  '[request-storage-access-integration] ' +
+  'document.requestStorageAccess() should be resolved without a user gesture with an existing top-level-storage-access permission');
+</script>
diff --git a/tests/wpt/web-platform-tests/wai-aria/README.md b/tests/wpt/web-platform-tests/wai-aria/manual/README.md
index 4e1a7706e33..4e1a7706e33 100644
--- a/tests/wpt/web-platform-tests/wai-aria/README.md
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/README.md
diff --git a/tests/wpt/web-platform-tests/wai-aria/alertdialog_modal_false-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/alertdialog_modal_false-manual.html
index ee64c9dbf0d..ee64c9dbf0d 100644
--- a/tests/wpt/web-platform-tests/wai-aria/alertdialog_modal_false-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/alertdialog_modal_false-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/alertdialog_modal_true-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/alertdialog_modal_true-manual.html
index 4affe2fd5e6..4affe2fd5e6 100644
--- a/tests/wpt/web-platform-tests/wai-aria/alertdialog_modal_true-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/alertdialog_modal_true-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/application_activedescendant-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/application_activedescendant-manual.html
index a6ef85ac3dd..a6ef85ac3dd 100644
--- a/tests/wpt/web-platform-tests/wai-aria/application_activedescendant-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/application_activedescendant-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/application_activedescendant_value_changes-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/application_activedescendant_value_changes-manual.html
index d923c84dea7..d923c84dea7 100644
--- a/tests/wpt/web-platform-tests/wai-aria/application_activedescendant_value_changes-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/application_activedescendant_value_changes-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/aria-current_not_declared-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_not_declared-manual.html
index ecf95bb64fc..ecf95bb64fc 100644
--- a/tests/wpt/web-platform-tests/wai-aria/aria-current_not_declared-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_not_declared-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_changes-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_changes-manual.html
index d3f1eae0052..d3f1eae0052 100644
--- a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_changes-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_changes-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_date-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_date-manual.html
index b15f5ec13ad..b15f5ec13ad 100644
--- a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_date-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_date-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_location-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_location-manual.html
index e8cf762c0e7..e8cf762c0e7 100644
--- a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_location-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_location-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_page-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_page-manual.html
index ba48b738cc0..ba48b738cc0 100644
--- a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_page-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_page-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_step-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_step-manual.html
index 6f4d5986c61..6f4d5986c61 100644
--- a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_step-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_step-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_time-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_time-manual.html
index 046fb817695..046fb817695 100644
--- a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_time-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_time-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_true-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_true-manual.html
index 3ce799f8b2c..3ce799f8b2c 100644
--- a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_true-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_true-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_unspecified-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_unspecified-manual.html
index c017a000a11..c017a000a11 100644
--- a/tests/wpt/web-platform-tests/wai-aria/aria-current_with_value_unspecified-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/aria-current_with_value_unspecified-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/aria-details_pointing_to_details_element-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/aria-details_pointing_to_details_element-manual.html
index 6a0d9d776a6..6a0d9d776a6 100644
--- a/tests/wpt/web-platform-tests/wai-aria/aria-details_pointing_to_details_element-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/aria-details_pointing_to_details_element-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/aria-details_pointing_to_div_element-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/aria-details_pointing_to_div_element-manual.html
index 8a46e78d971..8a46e78d971 100644
--- a/tests/wpt/web-platform-tests/wai-aria/aria-details_pointing_to_div_element-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/aria-details_pointing_to_div_element-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/article_in_feed_posinset_and_setsize-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/article_in_feed_posinset_and_setsize-manual.html
index 9c89dc3fa99..9c89dc3fa99 100644
--- a/tests/wpt/web-platform-tests/wai-aria/article_in_feed_posinset_and_setsize-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/article_in_feed_posinset_and_setsize-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/article_in_feed_setsize_-1-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/article_in_feed_setsize_-1-manual.html
index 0552f926e94..0552f926e94 100644
--- a/tests/wpt/web-platform-tests/wai-aria/article_in_feed_setsize_-1-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/article_in_feed_setsize_-1-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/article_not_in_feed_posinset_and_setsize-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/article_not_in_feed_posinset_and_setsize-manual.html
index 91cb0e0eb48..91cb0e0eb48 100644
--- a/tests/wpt/web-platform-tests/wai-aria/article_not_in_feed_posinset_and_setsize-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/article_not_in_feed_posinset_and_setsize-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_dialog-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_dialog-manual.html
index 8ba0a22a8d4..8ba0a22a8d4 100644
--- a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_dialog-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_dialog-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_emptystring-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_emptystring-manual.html
index e9091489068..e9091489068 100644
--- a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_emptystring-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_emptystring-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_false-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_false-manual.html
index 97188995e52..97188995e52 100644
--- a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_false-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_false-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_foo-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_foo-manual.html
index a09d21c0741..a09d21c0741 100644
--- a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_foo-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_foo-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_grid-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_grid-manual.html
index 57c8efbde24..57c8efbde24 100644
--- a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_grid-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_grid-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_listbox-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_listbox-manual.html
index 4191fc40a3c..4191fc40a3c 100644
--- a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_listbox-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_listbox-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_menu-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_menu-manual.html
index 9378993f558..9378993f558 100644
--- a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_menu-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_menu-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_tree-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_tree-manual.html
index e62b87f59d6..e62b87f59d6 100644
--- a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_tree-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_tree-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_true-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_true-manual.html
index a6d94658d27..a6d94658d27 100644
--- a/tests/wpt/web-platform-tests/wai-aria/button_haspopup_true-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/button_haspopup_true-manual.html
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--- a/tests/wpt/web-platform-tests/wai-aria/treeitem_selected_undefined-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/treeitem_selected_undefined-manual.html
diff --git a/tests/wpt/web-platform-tests/wai-aria/treeitem_selected_value_changes-manual.html b/tests/wpt/web-platform-tests/wai-aria/manual/treeitem_selected_value_changes-manual.html
index 69734c82dda..69734c82dda 100644
--- a/tests/wpt/web-platform-tests/wai-aria/treeitem_selected_value_changes-manual.html
+++ b/tests/wpt/web-platform-tests/wai-aria/manual/treeitem_selected_value_changes-manual.html
diff --git a/tests/wpt/web-platform-tests/webauthn/getcredential-prf.https.html b/tests/wpt/web-platform-tests/webauthn/getcredential-prf.https.html
index 61b52ac5958..40dfc5cad33 100644
--- a/tests/wpt/web-platform-tests/webauthn/getcredential-prf.https.html
+++ b/tests/wpt/web-platform-tests/webauthn/getcredential-prf.https.html
@@ -116,13 +116,21 @@ standardSetup(async function(authenticator) {
     byCred["Zm9v"] = {
       first: new Uint8Array([1,2,3,4]).buffer,
     };
-    const assertion = await assert(id, {
+    return promise_rejects_dom(t, "SyntaxError", assert(id, {
           evalByCredential: byCred,
-    });
-    assert_own_property(assertion.getClientExtensionResults(), 'prf');
-    assert_not_own_property(assertion.getClientExtensionResults().prf,
-                            'results');
-  }, "navigator.credentials.get() using wrong credential ID");
+    }));
+  }, "navigator.credentials.get() with credential ID not in allowedCredentials");
+
+  promise_test(async t => {
+    const id = (await credential).rawId;
+    const byCred = {};
+    byCred["Zm9v"] = {
+      first: new Uint8Array([1,2,3,4]),
+    };
+    return promise_rejects_dom(t, "SyntaxError", assert(id, {
+          evalByCredential: byCred,
+    }));
+  }, "navigator.credentials.get() with Uint8Array credential ID not in allowedCredentials");
 
   promise_test(async t => {
     const id = (await credential).rawId;
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/__init__.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/__init__.py
new file mode 100644
index 00000000000..d34fef9869a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/__init__.py
@@ -0,0 +1,6 @@
+import pytest
+
+
+def assert_pdf(data):
+    assert data.startswith(b"%PDF-"), "Decoded data starts with the PDF signature"
+    assert data.endswith(b"%%EOF\n"), "Decoded data ends with the EOF flag"
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/context.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/context.py
new file mode 100644
index 00000000000..a73bfee9621
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/context.py
@@ -0,0 +1,26 @@
+from base64 import decodebytes
+
+import pytest
+
+from . import assert_pdf
+from ... import recursive_compare
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_context(bidi_session, top_context, inline, get_pdf_content):
+    text = "Test"
+    url = inline(text)
+    await bidi_session.browsing_context.navigate(
+        context=top_context["context"], url=url, wait="complete"
+    )
+
+    value = await bidi_session.browsing_context.print(context=top_context["context"])
+    pdf = decodebytes(value.encode())
+
+    assert_pdf(pdf)
+
+    pdf_content = await get_pdf_content(value)
+    recursive_compare(
+        {"type": "array", "value": [{"type": "string", "value": text}]}, pdf_content
+    )
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/invalid.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/invalid.py
new file mode 100644
index 00000000000..114aeb62dcc
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/invalid.py
@@ -0,0 +1,197 @@
+import pytest
+import webdriver.bidi.error as error
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize("context", [None, False, 42, {}, []])
+async def test_params_context_invalid_type(bidi_session, context):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(context=context)
+
+
+async def test_params_context_invalid_value(bidi_session):
+    with pytest.raises(error.NoSuchFrameException):
+        await bidi_session.browsing_context.print(context="_invalid_")
+
+
+async def test_params_context_closed(bidi_session):
+    new_tab = await bidi_session.browsing_context.create(type_hint="tab")
+    await bidi_session.browsing_context.close(context=new_tab["context"])
+
+    # Try to print the closed context
+    with pytest.raises(error.NoSuchFrameException):
+        await bidi_session.browsing_context.print(context=new_tab["context"])
+
+
+@pytest.mark.parametrize("background", ["foo", 42, {}, []])
+async def test_params_background_invalid_type(bidi_session, top_context, background):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], background=background
+        )
+
+
+@pytest.mark.parametrize(
+    "margin",
+    [
+        False,
+        "foo",
+        42,
+        [],
+        {"top": False},
+        {"top": "foo"},
+        {"top": []},
+        {"top": {}},
+        {"bottom": False},
+        {"bottom": "foo"},
+        {"bottom": []},
+        {"bottom": {}},
+        {"left": False},
+        {"left": "foo"},
+        {"left": []},
+        {"left": {}},
+        {"right": False},
+        {"right": "foo"},
+        {"right": []},
+        {"right": {}},
+    ],
+)
+async def test_params_margin_invalid_type(bidi_session, top_context, margin):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], margin=margin
+        )
+
+
+@pytest.mark.parametrize(
+    "margin",
+    [
+        {"top": -0.1},
+        {"bottom": -0.1},
+        {"left": -0.1},
+        {"right": -0.1},
+    ],
+)
+async def test_params_margin_invalid_value(bidi_session, top_context, margin):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], margin=margin
+        )
+
+
+@pytest.mark.parametrize("orientation", [False, 42, {}, []])
+async def test_params_orientation_invalid_type(bidi_session, top_context, orientation):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], orientation=orientation
+        )
+
+
+async def test_params_orientation_invalid_value(bidi_session, top_context):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], orientation="foo"
+        )
+
+
+@pytest.mark.parametrize(
+    "page",
+    [
+        False,
+        "foo",
+        42,
+        [],
+        {"height": False},
+        {"height": "foo"},
+        {"height": []},
+        {"height": {}},
+        {"width": False},
+        {"width": "foo"},
+        {"width": []},
+        {"width": {}},
+    ],
+)
+async def test_params_page_invalid_type(bidi_session, top_context, page):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], page=page
+        )
+
+
+@pytest.mark.parametrize(
+    "page",
+    [
+        {"height": -1},
+        {"width": -1},
+    ],
+)
+async def test_params_page_invalid_value(bidi_session, top_context, page):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], page=page
+        )
+
+
+@pytest.mark.parametrize(
+    "page_ranges",
+    [
+        False,
+        "foo",
+        42,
+        {},
+        [None],
+        [False],
+        [[]],
+        [{}],
+        ["1-2", {}],
+    ],
+)
+async def test_params_page_ranges_invalid_type(bidi_session, top_context, page_ranges):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], page_ranges=page_ranges
+        )
+
+@pytest.mark.parametrize(
+    "page_ranges",
+    [
+        [4.2],
+        ["4.2"],
+        ["3-2"],
+        ["a-2"],
+        ["1:2"],
+        ["1-2-3"],
+    ],
+)
+async def test_params_page_ranges_invalid_value(bidi_session, top_context, page_ranges):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], page_ranges=page_ranges
+        )
+
+
+@pytest.mark.parametrize("scale", [False, "foo", {}, []])
+async def test_params_scale_invalid_type(bidi_session, top_context, scale):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], scale=scale
+        )
+
+
+@pytest.mark.parametrize("scale", [-1, 0.09, 2.01, 42])
+async def test_params_scale_invalid_value(bidi_session, top_context, scale):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], scale=scale
+        )
+
+
+@pytest.mark.parametrize("shrink_to_fit", ["foo", 42, {}, []])
+async def test_params_shrink_to_fit_invalid_type(
+    bidi_session, top_context, shrink_to_fit
+):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.print(
+            context=top_context["context"], shrink_to_fit=shrink_to_fit
+        )
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/page_ranges.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/page_ranges.py
new file mode 100644
index 00000000000..9e466883b0a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/browsing_context/print/page_ranges.py
@@ -0,0 +1,140 @@
+# META: timeout=long
+from base64 import decodebytes
+
+import pytest
+
+from . import assert_pdf
+from ... import recursive_compare
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "ranges,expected",
+    [
+        (
+            ["2-4"],
+            [
+                {"type": "string", "value": "Page 2"},
+                {"type": "string", "value": "Page 3"},
+                {"type": "string", "value": "Page 4"},
+            ],
+        ),
+        (
+            ["2-4", "2-3"],
+            [
+                {"type": "string", "value": "Page 2"},
+                {"type": "string", "value": "Page 3"},
+                {"type": "string", "value": "Page 4"},
+            ],
+        ),
+        (
+            ["2-4", "3-5"],
+            [
+                {"type": "string", "value": "Page 2"},
+                {"type": "string", "value": "Page 3"},
+                {"type": "string", "value": "Page 4"},
+                {"type": "string", "value": "Page 5"},
+            ],
+        ),
+        (
+            ["9-"],
+            [
+                {"type": "string", "value": "Page 9"},
+                {"type": "string", "value": "Page 10"},
+            ],
+        ),
+        (
+            ["-2"],
+            [
+                {"type": "string", "value": "Page 1"},
+                {"type": "string", "value": "Page 2"},
+            ],
+        ),
+        (
+            [7],
+            [
+                {"type": "string", "value": "Page 7"},
+            ],
+        ),
+        (
+            ["7"],
+            [
+                {"type": "string", "value": "Page 7"},
+            ],
+        ),
+        (
+            ["-2", "9-", "7"],
+            [
+                {"type": "string", "value": "Page 1"},
+                {"type": "string", "value": "Page 2"},
+                {"type": "string", "value": "Page 7"},
+                {"type": "string", "value": "Page 9"},
+                {"type": "string", "value": "Page 10"},
+            ],
+        ),
+        (
+            ["-5", "2-"],
+            [
+                {"type": "string", "value": "Page 1"},
+                {"type": "string", "value": "Page 2"},
+                {"type": "string", "value": "Page 3"},
+                {"type": "string", "value": "Page 4"},
+                {"type": "string", "value": "Page 5"},
+                {"type": "string", "value": "Page 6"},
+                {"type": "string", "value": "Page 7"},
+                {"type": "string", "value": "Page 8"},
+                {"type": "string", "value": "Page 9"},
+                {"type": "string", "value": "Page 10"},
+            ],
+        ),
+        (
+            [],
+            [
+                {"type": "string", "value": "Page 1"},
+                {"type": "string", "value": "Page 2"},
+                {"type": "string", "value": "Page 3"},
+                {"type": "string", "value": "Page 4"},
+                {"type": "string", "value": "Page 5"},
+                {"type": "string", "value": "Page 6"},
+                {"type": "string", "value": "Page 7"},
+                {"type": "string", "value": "Page 8"},
+                {"type": "string", "value": "Page 9"},
+                {"type": "string", "value": "Page 10"},
+            ],
+        ),
+    ],
+)
+async def test_page_ranges_document(
+    bidi_session, inline, top_context, get_pdf_content, ranges, expected
+):
+    url = inline(
+        """
+<style>
+div {page-break-after: always}
+</style>
+
+<div>Page 1</div>
+<div>Page 2</div>
+<div>Page 3</div>
+<div>Page 4</div>
+<div>Page 5</div>
+<div>Page 6</div>
+<div>Page 7</div>
+<div>Page 8</div>
+<div>Page 9</div>
+<div>Page 10</div>"""
+    )
+    await bidi_session.browsing_context.navigate(
+        context=top_context["context"], url=url, wait="complete"
+    )
+
+    value = await bidi_session.browsing_context.print(
+        context=top_context["context"], page_ranges=ranges
+    )
+    pdf = decodebytes(value.encode())
+
+    assert_pdf(pdf)
+
+    pdf_content = await get_pdf_content(value)
+    recursive_compare({"type": "array", "value": expected}, pdf_content)
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/arguments.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/arguments.py
index 9fbe5fb8110..daf31fc869c 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/arguments.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/arguments.py
@@ -1,44 +1,136 @@
 import pytest
+import webdriver.bidi.error as error
 from webdriver.bidi.modules.script import ContextTarget
 
-from ... import recursive_compare
+from ... import any_string, recursive_compare
 
 
 @pytest.mark.asyncio
-async def test_arguments(bidi_session, top_context):
+async def test_default_arguments(bidi_session, top_context):
     result = await bidi_session.script.call_function(
-        function_declaration="(...args)=>{return args}",
-        arguments=[{
-            "type": "string",
-            "value": "ARGUMENT_STRING_VALUE"
-        }, {
-            "type": "number",
-            "value": 42}],
+        function_declaration="(...args) => args",
         await_promise=False,
         target=ContextTarget(top_context["context"]))
 
     recursive_compare({
         "type": "array",
-        "value": [{
-            "type": 'string',
-            "value": 'ARGUMENT_STRING_VALUE'
-        }, {
-            "type": 'number',
-            "value": 42}]},
-        result)
+        "value": []
+    }, result)
 
 
 @pytest.mark.asyncio
-async def test_default_arguments(bidi_session, top_context):
+@pytest.mark.parametrize(
+    "argument, expected",
+    [
+        ({"type": "undefined"}, "undefined"),
+        ({"type": "null"}, "null"),
+        ({"type": "string", "value": "foobar"}, "'foobar'"),
+        ({"type": "string", "value": "2"}, "'2'"),
+        ({"type": "number", "value": "-0"}, "-0"),
+        ({"type": "number", "value": "Infinity"}, "Infinity"),
+        ({"type": "number", "value": "-Infinity"}, "-Infinity"),
+        ({"type": "number", "value": 3}, "3"),
+        ({"type": "number", "value": 1.4}, "1.4"),
+        ({"type": "boolean", "value": True}, "true"),
+        ({"type": "boolean", "value": False}, "false"),
+        ({"type": "bigint", "value": "42"}, "42n"),
+    ],
+)
+async def test_primitive_value(bidi_session, top_context, argument, expected):
     result = await bidi_session.script.call_function(
-        function_declaration="(...args)=>{return args}",
+        function_declaration=f"""(arg) => {{
+            if (arg !== {expected}) {{
+                throw new Error(`Argument should be {expected}, but was ` + arg);
+            }}
+            return arg;
+        }}""",
+        arguments=[argument],
         await_promise=False,
-        target=ContextTarget(top_context["context"]))
+        target=ContextTarget(top_context["context"]),
+    )
 
-    recursive_compare({
-        "type": "array",
-        "value": []
-    }, result)
+    recursive_compare(argument, result)
+
+
+@pytest.mark.asyncio
+async def test_primitive_value_NaN(bidi_session, top_context):
+    nan_remote_value = {"type": "number", "value": "NaN"}
+    result = await bidi_session.script.call_function(
+        function_declaration="""(arg) => {
+            if (!isNaN(arg)) {
+                throw new Error("Argument should be 'NaN', but was " + arg);
+            }
+            return arg;
+        }""",
+        arguments=[nan_remote_value],
+        await_promise=False,
+        target=ContextTarget(top_context["context"]),
+    )
+
+    recursive_compare(nan_remote_value, result)
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize(
+    "argument, expected_type",
+    [
+        ({
+             "type": "array",
+             "value": [
+                 {"type": "string", "value": "foobar"},
+             ],
+         },
+         "Array"
+         ),
+        ({"type": "date", "value": "2022-05-31T13:47:29.000Z"},
+         "Date"
+         ),
+        ({
+             "type": "map",
+             "value": [
+                 ["foobar", {"type": "string", "value": "foobar"}],
+             ],
+         },
+         "Map"
+         ),
+        ({
+             "type": "object",
+             "value": [
+                 ["foobar", {"type": "string", "value": "foobar"}],
+             ],
+         },
+         "Object"
+         ),
+        ({"type": "regexp", "value": {"pattern": "foo", "flags": "g"}},
+         "RegExp"
+         ),
+        ({
+             "type": "set",
+             "value": [
+                 {"type": "string", "value": "foobar"},
+             ],
+         },
+         "Set"
+         )
+    ],
+)
+async def test_local_value(bidi_session, top_context, argument, expected_type):
+    result = await bidi_session.script.call_function(
+        function_declaration=f"""(arg) => {{
+            if (!(arg instanceof {expected_type})) {{
+                const type = Object.prototype.toString.call(arg);
+                throw new Error(
+                    "Argument type should be {expected_type}, but was " + type
+                );
+            }}
+            return arg;
+        }}""",
+        arguments=[argument],
+        await_promise=False,
+        target=ContextTarget(top_context["context"]),
+    )
+
+    recursive_compare(argument, result)
 
 
 @pytest.mark.asyncio
@@ -113,11 +205,6 @@ async def test_default_arguments(bidi_session, top_context):
             {"type": "boolean", "value": False},
         ),
         (
-            "document.createElement('div')",
-            "(node) => node.tagName",
-            {"type": "string", "value": "DIV"},
-        ),
-        (
             "window.foo = 3; window",
             "(window) => window.foo",
             {"type": "number", "value": 3},
@@ -134,7 +221,7 @@ async def test_default_arguments(bidi_session, top_context):
         ),
     ],
 )
-async def test_remote_value_argument(
+async def test_remote_reference_argument(
     bidi_session, top_context, setup_expression, function_declaration, expected
 ):
     remote_value_result = await bidi_session.script.evaluate(
@@ -159,116 +246,6 @@ async def test_remote_value_argument(
 
 @pytest.mark.asyncio
 @pytest.mark.parametrize(
-    "argument, expected",
-    [
-        ({"type": "undefined"}, "undefined"),
-        ({"type": "null"}, "null"),
-        ({"type": "string", "value": "foobar"}, "'foobar'"),
-        ({"type": "string", "value": "2"}, "'2'"),
-        ({"type": "number", "value": "-0"}, "-0"),
-        ({"type": "number", "value": "Infinity"}, "Infinity"),
-        ({"type": "number", "value": "-Infinity"}, "-Infinity"),
-        ({"type": "number", "value": 3}, "3"),
-        ({"type": "number", "value": 1.4}, "1.4"),
-        ({"type": "boolean", "value": True}, "true"),
-        ({"type": "boolean", "value": False}, "false"),
-        ({"type": "bigint", "value": "42"}, "42n"),
-    ],
-)
-async def test_primitive_values(bidi_session, top_context, argument, expected):
-    result = await bidi_session.script.call_function(
-        function_declaration=f"""(arg) => {{
-            if(arg!=={expected})
-                throw Error("Argument should be {expected}, but was "+arg);
-            return arg;
-        }}""",
-        arguments=[argument],
-        await_promise=False,
-        target=ContextTarget(top_context["context"]),
-    )
-
-    recursive_compare(argument, result)
-
-
-@pytest.mark.asyncio
-async def test_nan(bidi_session, top_context):
-    nan_remote_value = {"type": "number", "value": "NaN"}
-    result = await bidi_session.script.call_function(
-        function_declaration=f"""(arg) => {{
-            if(!isNaN(arg))
-                throw Error("Argument should be 'NaN', but was "+arg);
-            return arg;
-        }}""",
-        arguments=[nan_remote_value],
-        await_promise=False,
-        target=ContextTarget(top_context["context"]),
-    )
-
-    recursive_compare(nan_remote_value, result)
-
-
-@pytest.mark.asyncio
-@pytest.mark.parametrize(
-    "argument, expected_type",
-    [
-        ({
-             "type": "array",
-             "value": [
-                 {"type": "string", "value": "foobar"},
-             ],
-         },
-         "Array"
-         ),
-        ({"type": "date", "value": "2022-05-31T13:47:29.000Z"},
-         "Date"
-         ),
-        ({
-             "type": "map",
-             "value": [
-                 ["foobar", {"type": "string", "value": "foobar"}],
-             ],
-         },
-         "Map"
-         ),
-        ({
-             "type": "object",
-             "value": [
-                 ["foobar", {"type": "string", "value": "foobar"}],
-             ],
-         },
-         "Object"
-         ),
-        ({"type": "regexp", "value": {"pattern": "foo", "flags": "g"}},
-         "RegExp"
-         ),
-        ({
-             "type": "set",
-             "value": [
-                 {"type": "string", "value": "foobar"},
-             ],
-         },
-         "Set"
-         )
-    ],
-)
-async def test_local_values(bidi_session, top_context, argument, expected_type):
-    result = await bidi_session.script.call_function(
-        function_declaration=f"""(arg) => {{
-            if(! (arg instanceof {expected_type}))
-                throw Error("Argument type should be {expected_type}, but was "+
-                    Object.prototype.toString.call(arg));
-            return arg;
-        }}""",
-        arguments=[argument],
-        await_promise=False,
-        target=ContextTarget(top_context["context"]),
-    )
-
-    recursive_compare(argument, result)
-
-
-@pytest.mark.asyncio
-@pytest.mark.parametrize(
     "value_fn, function_declaration",
     [
         (
@@ -293,11 +270,11 @@ async def test_local_values(bidi_session, top_context, argument, expected_type):
         ),
     ],
 )
-async def test_remote_value_deserialization(
+async def test_remote_reference_deserialization(
     bidi_session, top_context, call_function, evaluate, value_fn, function_declaration
 ):
     remote_value = await evaluate(
-        "window.SOME_OBJECT = {SOME_PROPERTY:'SOME_VALUE'}; window.SOME_OBJECT",
+        "window.SOME_OBJECT = { SOME_PROPERTY: 'SOME_VALUE' }; window.SOME_OBJECT",
         result_ownership="root",
     )
 
@@ -317,6 +294,107 @@ async def test_remote_value_deserialization(
 
 @pytest.mark.asyncio
 @pytest.mark.parametrize(
+    "setup_expression, expected_node_type",
+    [
+        ("document.querySelector('img')", 1),
+        ("document.querySelector('input#button').attributes[0]", 2),
+        ("document.querySelector('#with-text-node').childNodes[0]", 3),
+        ("""document.createProcessingInstruction("xml-stylesheet", "href='foo.css'")""", 7),
+        ("document.querySelector('#with-comment').childNodes[0]", 8),
+        ("document", 9),
+        ("document.doctype", 10),
+        ("document.createDocumentFragment()", 11),
+        ("document.querySelector('#custom-element').shadowRoot", 11),
+    ],
+    ids=[
+        "element",
+        "attribute",
+        "text node",
+        "processing instruction",
+        "comment",
+        "document",
+        "doctype",
+        "document fragment",
+        "shadow root",
+    ]
+)
+async def test_remote_reference_node_argument(
+    bidi_session, get_test_page, top_context, setup_expression, expected_node_type
+):
+    await bidi_session.browsing_context.navigate(
+        context=top_context['context'], url=get_test_page(), wait="complete"
+    )
+
+    remote_reference = await bidi_session.script.evaluate(
+        expression=setup_expression,
+        await_promise=False,
+        target=ContextTarget(top_context["context"]),
+    )
+
+    result = await bidi_session.script.call_function(
+        function_declaration="(node) => node.nodeType",
+        arguments=[remote_reference],
+        await_promise=False,
+        target=ContextTarget(top_context["context"]),
+    )
+
+    assert result == {"type": "number", "value": expected_node_type}
+
+
+@pytest.mark.asyncio
+async def test_remote_reference_node_cdata(bidi_session, inline, top_context):
+    xml_page = inline("""<foo>CDATA section: <![CDATA[ < > & ]]>.</foo>""", doctype="xml")
+
+    await bidi_session.browsing_context.navigate(
+        context=top_context['context'], url=xml_page, wait="complete"
+    )
+
+    remote_reference = await bidi_session.script.evaluate(
+        expression="document.querySelector('foo').childNodes[1]",
+        await_promise=False,
+        target=ContextTarget(top_context["context"]),
+    )
+
+    result = await bidi_session.script.call_function(
+        function_declaration="(node) => node.nodeType",
+        arguments=[remote_reference],
+        await_promise=False,
+        target=ContextTarget(top_context["context"]),
+    )
+
+    assert result == {"type": "number", "value": 4}
+
+
+@pytest.mark.asyncio
+async def test_remote_reference_sharedId_precedence_over_handle(
+    bidi_session, get_test_page, top_context
+):
+    await bidi_session.browsing_context.navigate(
+        context=top_context['context'], url=get_test_page(), wait="complete"
+    )
+
+    remote_reference = await bidi_session.script.evaluate(
+        expression="document.querySelector('img')",
+        await_promise=False,
+        result_ownership="root",
+        target=ContextTarget(top_context["context"]),
+    )
+
+    assert "handle" in remote_reference
+    # Invalidate shared reference to trigger a "no such node" error
+    remote_reference["sharedId"] = "foo"
+
+    with pytest.raises(error.NoSuchNodeException):
+        await bidi_session.script.call_function(
+            function_declaration="(node) => node.nodeType",
+            arguments=[remote_reference],
+            await_promise=False,
+            target=ContextTarget(top_context["context"]),
+        )
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize(
     "expression, function_declaration, expected",
     [
         (
@@ -324,6 +402,7 @@ async def test_remote_value_deserialization(
             "(collection) => collection.item(0)",
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "attributes": {},
                     "childNodeCount": 0,
@@ -339,6 +418,7 @@ async def test_remote_value_deserialization(
             "(nodeList) => nodeList.item(0)",
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "attributes": {},
                     "childNodeCount": 0,
@@ -354,7 +434,7 @@ async def test_remote_value_deserialization(
         "nodelist"
     ]
 )
-async def test_remote_value_dom_collection(
+async def test_remote_reference_dom_collection(
     bidi_session,
     inline,
     top_context,
@@ -382,4 +462,4 @@ async def test_remote_value_dom_collection(
         arguments=[remote_value],
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/invalid.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/invalid.py
index cf5a07f41b7..d73705c6724 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/invalid.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/invalid.py
@@ -10,7 +10,7 @@ pytestmark = pytest.mark.asyncio
 async def test_params_target_invalid_type(bidi_session, target):
     with pytest.raises(error.InvalidArgumentException):
         await bidi_session.script.call_function(
-            function_declaration="1 + 2",
+            function_declaration="(arg) => arg",
             await_promise=False,
             target=target)
 
@@ -19,7 +19,7 @@ async def test_params_target_invalid_type(bidi_session, target):
 async def test_params_context_invalid_type(bidi_session, context):
     with pytest.raises(error.InvalidArgumentException):
         await bidi_session.script.call_function(
-            function_declaration="1 + 2",
+            function_declaration="(arg) => arg",
             await_promise=False,
             target=ContextTarget(context))
 
@@ -28,7 +28,7 @@ async def test_params_context_invalid_type(bidi_session, context):
 async def test_params_sandbox_invalid_type(bidi_session, top_context, sandbox):
     with pytest.raises(error.InvalidArgumentException):
         await bidi_session.script.call_function(
-            function_declaration="1 + 2",
+            function_declaration="(arg) => arg",
             await_promise=False,
             target=ContextTarget(top_context["context"],
                                  sandbox))
@@ -37,7 +37,7 @@ async def test_params_sandbox_invalid_type(bidi_session, top_context, sandbox):
 async def test_params_context_unknown(bidi_session):
     with pytest.raises(error.NoSuchFrameException):
         await bidi_session.script.call_function(
-            function_declaration="1 + 2",
+            function_declaration="(arg) => arg",
             await_promise=False,
             target=ContextTarget("_UNKNOWN_"))
 
@@ -46,7 +46,7 @@ async def test_params_context_unknown(bidi_session):
 async def test_params_realm_invalid_type(bidi_session, realm):
     with pytest.raises(error.InvalidArgumentException):
         await bidi_session.script.call_function(
-            function_declaration="1 + 2",
+            function_declaration="(arg) => arg",
             await_promise=False,
             target=RealmTarget(realm))
 
@@ -54,7 +54,7 @@ async def test_params_realm_invalid_type(bidi_session, realm):
 async def test_params_realm_unknown(bidi_session):
     with pytest.raises(error.NoSuchFrameException):
         await bidi_session.script.call_function(
-            function_declaration="1 + 2",
+            function_declaration="(arg) => arg",
             await_promise=False,
             target=RealmTarget("_UNKNOWN_"))
 
@@ -74,7 +74,7 @@ async def test_params_this_invalid_type(bidi_session, top_context,
                                         this):
     with pytest.raises(error.InvalidArgumentException):
         await bidi_session.script.call_function(
-            function_declaration="1 + 2",
+            function_declaration="(arg) => arg",
             this=this,
             await_promise=False,
             target=ContextTarget(top_context["context"]))
@@ -85,29 +85,61 @@ async def test_params_arguments_invalid_type(bidi_session, top_context,
                                              arguments):
     with pytest.raises(error.InvalidArgumentException):
         await bidi_session.script.call_function(
-            function_declaration="1 + 2",
+            function_declaration="(arg) => arg",
             arguments=arguments,
             await_promise=False,
             target=ContextTarget(top_context["context"]))
 
 
 @pytest.mark.parametrize("argument", [False, "SOME_STRING", 42, {}, []])
-async def test_params_single_argument_invalid_type(bidi_session, top_context,
+async def test_params_arguments_entry_invalid_type(bidi_session, top_context,
                                                    argument):
     with pytest.raises(error.InvalidArgumentException):
         await bidi_session.script.call_function(
-            function_declaration="1 + 2",
+            function_declaration="(arg) => arg",
             arguments=[argument],
             await_promise=False,
             target=ContextTarget(top_context["context"]))
 
 
+@pytest.mark.parametrize("value", [None, False, 42, {}, []])
+async def test_params_arguments_handle_invalid_type(
+    bidi_session, top_context, value
+):
+    serialized_value = {
+        "handle": value,
+    }
+
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.script.call_function(
+            function_declaration="(arg) => arg",
+            arguments=[serialized_value],
+            await_promise=False,
+            target=ContextTarget(top_context["context"]))
+
+
+@pytest.mark.parametrize("value", [None, False, 42, {}, []])
+async def test_params_arguments_sharedId_invalid_type(
+    bidi_session, top_context, value
+):
+    serialized_value = {
+        "sharedId": value,
+    }
+
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.script.call_function(
+            function_declaration="(arg) => arg",
+            arguments=[serialized_value],
+            await_promise=False,
+            target=ContextTarget(top_context["context"]))
+
+
 @pytest.mark.parametrize("await_promise", [None, "False", 0, 42, {}, []])
 async def test_params_await_promise_invalid_type(bidi_session, top_context,
                                                  await_promise):
     with pytest.raises(error.InvalidArgumentException):
         await bidi_session.script.call_function(
-            function_declaration="1 + 2",
+            function_declaration="(arg) => arg",
             await_promise=await_promise,
             target=ContextTarget(top_context["context"]))
 
@@ -117,7 +149,7 @@ async def test_params_result_ownership_invalid_value(bidi_session, top_context,
                                                      result_ownership):
     with pytest.raises(error.InvalidArgumentException):
         await bidi_session.script.call_function(
-            function_declaration="1 + 2",
+            function_declaration="(arg) => arg",
             await_promise=False,
             target=ContextTarget(top_context["context"]),
             result_ownership=result_ownership)
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/result_node.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/result_node.py
index 08e47be5f71..e1575374fd5 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/result_node.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/result_node.py
@@ -1,18 +1,7 @@
 import pytest
 from webdriver.bidi.modules.script import ContextTarget
 
-
-page_data = """
-    <div id="deep"><p><span></span></p><br/></div>
-    <div id="text-node"><p></p>Lorem</div>
-    <br/>
-    <svg id="foo"></svg>
-    <div id="comment"><!-- Comment --></div>
-    <script>
-        var svg = document.querySelector("svg");
-        svg.setAttributeNS("http://www.w3.org/2000/svg", "svg:foo", "bar");
-    </script>
-"""
+from ... import any_string, recursive_compare
 
 
 @pytest.mark.asyncio
@@ -25,6 +14,7 @@ page_data = """
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "attributes": {},
                     "childNodeCount": 0,
@@ -41,9 +31,9 @@ page_data = """
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "attributes": {
-                        "id": "foo",
                         "svg:foo": "bar",
                     },
                     "childNodeCount": 0,
@@ -56,24 +46,17 @@ page_data = """
         ),
         (   # all children including non-element nodes
             """
-                () => document.querySelector("div#text-node")
+                () => document.querySelector("#with-text-node")
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
-                    "attributes": {"id": "text-node"},
-                    "childNodeCount": 2,
+                    "attributes": {"id": "with-text-node"},
+                    "childNodeCount": 1,
                     "children": [{
                         "type": "node",
-                        "value": {
-                            "attributes": {},
-                            "childNodeCount": 0,
-                            "localName": "p",
-                            "namespaceURI": "http://www.w3.org/1999/xhtml",
-                            "nodeType": 1
-                        }
-                    },{
-                        "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "childNodeCount": 0,
                             "nodeType": 3,
@@ -88,15 +71,17 @@ page_data = """
         ),
         (   # children limited due to max depth
             """
-                () => document.querySelector("div#deep")
+                () => document.querySelector("#with-children")
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
-                    "attributes": {"id": "deep"},
+                    "attributes": {"id": "with-children"},
                     "childNodeCount": 2,
                     "children": [{
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "attributes": {},
                             "childNodeCount": 1,
@@ -104,8 +89,9 @@ page_data = """
                             "namespaceURI": "http://www.w3.org/1999/xhtml",
                             "nodeType": 1
                         }
-                    },{
+                    }, {
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "attributes": {},
                             "childNodeCount": 0,
@@ -126,6 +112,7 @@ page_data = """
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "attributes": {},
                     "childNodeCount": 0,
@@ -145,10 +132,10 @@ page_data = """
     ]
 )
 async def test_element_node(
-    bidi_session, inline, top_context, function_declaration, expected
+    bidi_session, get_test_page, top_context, function_declaration, expected
 ):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.call_function(
@@ -157,7 +144,7 @@ async def test_element_node(
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -166,25 +153,27 @@ async def test_element_node(
     [
         (
             """
-                () => document.querySelector("svg").attributes[0]
+                () => document.querySelector("input#button").attributes[0]
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
                     "localName": "id",
                     "namespaceURI": None,
                     "nodeType": 2,
-                    "nodeValue": "foo",
+                    "nodeValue": "button",
                 },
             },
-        ),(
+        ), (
             """
-                () => document.querySelector("svg").attributes[1]
+                () => document.querySelector("svg").attributes[0]
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -201,10 +190,10 @@ async def test_element_node(
     ]
 )
 async def test_attribute_node(
-    bidi_session, inline, top_context, function_declaration, expected
+    bidi_session, get_test_page, top_context, function_declaration, expected
 ):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.call_function(
@@ -213,7 +202,7 @@ async def test_attribute_node(
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -222,10 +211,11 @@ async def test_attribute_node(
     [
         (
             """
-                () => document.querySelector("div#text-node").childNodes[1]
+                () => document.querySelector("#with-text-node").childNodes[0]
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -238,9 +228,11 @@ async def test_attribute_node(
         "basic",
     ]
 )
-async def test_text_node(bidi_session, inline, top_context, function_declaration, expected):
+async def test_text_node(
+    bidi_session, get_test_page, top_context, function_declaration, expected
+):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.call_function(
@@ -249,7 +241,7 @@ async def test_text_node(bidi_session, inline, top_context, function_declaration
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -262,6 +254,7 @@ async def test_text_node(bidi_session, inline, top_context, function_declaration
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -287,7 +280,7 @@ async def test_cdata_node(bidi_session, inline, new_tab, function_declaration, e
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -300,6 +293,7 @@ async def test_cdata_node(bidi_session, inline, new_tab, function_declaration, e
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -321,14 +315,13 @@ async def test_processing_instruction_node(
         context=new_tab['context'], url=xml_page, wait="complete"
     )
 
-
     result = await bidi_session.script.call_function(
         function_declaration=function_declaration,
         target=ContextTarget(new_tab["context"]),
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -337,10 +330,11 @@ async def test_processing_instruction_node(
     [
         (
             """
-                () => document.querySelector("div#comment").childNodes[0]
+                () => document.querySelector("#with-comment").childNodes[0]
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -354,10 +348,10 @@ async def test_processing_instruction_node(
     ]
 )
 async def test_comment_node(
-    bidi_session, inline, top_context, function_declaration, expected
+    bidi_session, get_test_page, top_context, function_declaration, expected
 ):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.call_function(
@@ -366,7 +360,7 @@ async def test_comment_node(
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -379,16 +373,19 @@ async def test_comment_node(
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 2,
                     "children": [{
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "childNodeCount": 0,
                             "nodeType": 10
                         }
                     }, {
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "attributes": {},
                             "childNodeCount": 2,
@@ -406,10 +403,10 @@ async def test_comment_node(
     ]
 )
 async def test_document_node(
-    bidi_session, inline, top_context, function_declaration, expected
+    bidi_session, get_test_page, top_context, function_declaration, expected
 ):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.call_function(
@@ -418,7 +415,7 @@ async def test_document_node(
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -431,6 +428,7 @@ async def test_document_node(
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -443,10 +441,10 @@ async def test_document_node(
     ]
 )
 async def test_doctype_node(
-    bidi_session, inline, top_context, function_declaration, expected
+    bidi_session, get_test_page, top_context, function_declaration, expected
 ):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.call_function(
@@ -455,7 +453,7 @@ async def test_doctype_node(
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -464,10 +462,35 @@ async def test_doctype_node(
     [
         (
             """
-                () => new DocumentFragment()
+                () => document.querySelector("#custom-element").shadowRoot
+            """,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {
+                    "childNodeCount": 1,
+                    "children": [{
+                        "type": "node",
+                        "sharedId": any_string,
+                        "value": {
+                            "attributes": {"id": "in-shadow-dom"},
+                            "childNodeCount": 1,
+                            "localName": "div",
+                            "namespaceURI": "http://www.w3.org/1999/xhtml",
+                            "nodeType": 1
+                        }
+                    }],
+                    "nodeType": 11
+                }
+            }
+        ),
+        (
+            """
+                () => document.createDocumentFragment()
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -476,14 +499,15 @@ async def test_doctype_node(
             }
         ),
     ], ids=[
-        "basic",
+        "shadow root",
+        "not connected",
     ]
 )
 async def test_document_fragment_node(
-    bidi_session, inline, top_context, function_declaration, expected
+    bidi_session, get_test_page, top_context, function_declaration, expected
 ):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.call_function(
@@ -492,30 +516,31 @@ async def test_document_fragment_node(
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
-async def test_node_within_object(bidi_session, inline, top_context):
+async def test_node_within_object(bidi_session, get_test_page, top_context):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.call_function(
-        function_declaration="""() => ({"elem": document.querySelector("span")})""",
+        function_declaration="""() => ({"elem": document.querySelector("img")})""",
         target=ContextTarget(top_context["context"]),
         await_promise=False,
     )
 
-    assert result == {
+    expected = {
         "type": "object",
         "value": [
             ["elem", {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "attributes": {},
                     "childNodeCount": 0,
-                    "localName": "span",
+                    "localName": "img",
                     "namespaceURI": "http://www.w3.org/1999/xhtml",
                     "nodeType": 1
                 }
@@ -523,22 +548,25 @@ async def test_node_within_object(bidi_session, inline, top_context):
         ]
     }
 
+    recursive_compare(expected, result)
+
 
 @pytest.mark.asyncio
 @pytest.mark.parametrize(
     "function_declaration, expected",
     [
         (
-            "() => document.getElementsByTagName('span')",
+            "() => document.getElementsByTagName('img')",
             {
                 "type": "htmlcollection",
                 "value": [
                     {
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "attributes": {},
                             "childNodeCount": 0,
-                            "localName": "span",
+                            "localName": "img",
                             "namespaceURI": "http://www.w3.org/1999/xhtml",
                             "nodeType": 1
                         }
@@ -547,16 +575,17 @@ async def test_node_within_object(bidi_session, inline, top_context):
             }
         ),
         (
-            "() => document.querySelectorAll('span')",
+            "() => document.querySelectorAll('img')",
             {
                 "type": "nodelist",
                 "value": [
                     {
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "attributes": {},
                             "childNodeCount": 0,
-                            "localName": "span",
+                            "localName": "img",
                             "namespaceURI": "http://www.w3.org/1999/xhtml",
                             "nodeType": 1
                         }
@@ -571,13 +600,13 @@ async def test_node_within_object(bidi_session, inline, top_context):
 )
 async def test_node_within_dom_collection(
     bidi_session,
-    inline,
+    get_test_page,
     top_context,
     function_declaration,
     expected
 ):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.call_function(
@@ -586,4 +615,4 @@ async def test_node_within_dom_collection(
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/sandbox.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/sandbox.py
index e0a4914d8f6..382ede3c783 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/sandbox.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/call_function/sandbox.py
@@ -128,6 +128,23 @@ async def test_sandbox_with_side_effects(bidi_session, new_tab):
 
 
 @pytest.mark.asyncio
+async def test_sandbox_returns_same_node(bidi_session, new_tab):
+    node = await bidi_session.script.call_function(
+        function_declaration="() => document.querySelector('body')",
+        target=ContextTarget(new_tab["context"]),
+        await_promise=True,
+    )
+    recursive_compare({"type": "node", "sharedId": any_string}, node)
+
+    node_sandbox = await bidi_session.script.call_function(
+        function_declaration="() => document.querySelector('body')",
+        target=ContextTarget(new_tab["context"], sandbox="sandbox_1"),
+        await_promise=True,
+    )
+    assert node_sandbox == node
+
+
+@pytest.mark.asyncio
 async def test_arguments(bidi_session, new_tab):
     argument = {
         "type": "set",
@@ -135,22 +152,40 @@ async def test_arguments(bidi_session, new_tab):
             {"type": "string", "value": "foobar"},
         ],
     }
+
     result = await bidi_session.script.call_function(
-        function_declaration=f"""(arg) => {{
+        function_declaration="""(arg) => {
             if(! (arg instanceof Set))
                 throw Error("Argument type should be Set, but was "+
                     Object.prototype.toString.call(arg));
             return arg;
-        }}""",
+        }""",
         arguments=[argument],
         await_promise=False,
         target=ContextTarget(new_tab["context"], "sandbox"),
     )
-
     recursive_compare(argument, result)
 
 
 @pytest.mark.asyncio
+async def test_arguments_uses_same_node_in_sandbox(bidi_session, new_tab):
+    node = await bidi_session.script.call_function(
+        function_declaration="() => document.querySelector('body')",
+        target=ContextTarget(new_tab["context"]),
+        await_promise=True,
+    )
+    recursive_compare({"type": "node", "sharedId": any_string}, node)
+
+    result = await bidi_session.script.call_function(
+        function_declaration="""(node) => node.localName""",
+        arguments=[node],
+        await_promise=False,
+        target=ContextTarget(new_tab["context"], "sandbox"),
+    )
+    assert result == {"type": "string", "value": "body"}
+
+
+@pytest.mark.asyncio
 @pytest.mark.parametrize("await_promise", [True, False])
 async def test_exception_details(bidi_session, new_tab, await_promise):
     function_declaration = "()=>{{ throw 1 }}"
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/classic_interop/__init__.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/classic_interop/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/classic_interop/__init__.py
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/classic_interop/node_shared_id.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/classic_interop/node_shared_id.py
new file mode 100644
index 00000000000..410d029207c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/classic_interop/node_shared_id.py
@@ -0,0 +1,72 @@
+import pytest
+
+from webdriver import Element, ShadowRoot
+from webdriver.bidi.modules.script import ContextTarget
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "expression, expected_node_type",
+    [
+        ("""return document.querySelector("div#with-children")""", 1),
+        ("""return document.querySelector("custom-element").shadowRoot""", 11),
+    ],
+    ids=["Element", "ShadowRoot"],
+)
+async def test_web_reference_created_in_classic(
+    bidi_session,
+    current_session,
+    get_test_page,
+    top_context,
+    expression,
+    expected_node_type
+):
+    current_session.url = get_test_page()
+
+    node = current_session.execute_script(expression)
+    shared_id = node.id
+
+    # Use element reference from WebDriver classic in WebDriver BiDi
+    result = await bidi_session.script.call_function(
+        function_declaration="(node)=>{return node.nodeType}",
+        arguments=[{"sharedId": shared_id}],
+        await_promise=False,
+        target=ContextTarget(top_context["context"]),
+    )
+
+    assert result == {"type": "number", "value": expected_node_type}
+
+
+@pytest.mark.parametrize(
+    "expression, expected",
+    [
+        ("""document.querySelector("div#with-children")""", 1),
+        ("""document.querySelector("custom-element").shadowRoot""", 11),
+    ],
+    ids=["Element", "ShadowRoot"],
+)
+async def test_web_reference_created_in_bidi(
+    bidi_session,
+    current_session,
+    get_test_page,
+    top_context,
+    expression,
+    expected
+):
+    current_session.url = get_test_page()
+
+    result = await bidi_session.script.evaluate(
+        expression=expression,
+        target=ContextTarget(top_context["context"]),
+        await_promise=False,
+    )
+
+    nodeType = result["value"]["nodeType"]
+    assert nodeType == expected
+
+    # Use web reference from WebDriver BiDi in WebDriver classic
+    types = {1: Element, 11: ShadowRoot}
+    node = types[nodeType](current_session, result["sharedId"])
+    nodeType = current_session.execute_script("""return arguments[0].nodeType""", args=(node,))
+    assert nodeType == expected
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/__init__.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/__init__.py
index e69de29bb2d..8b137891791 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/__init__.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/__init__.py
@@ -0,0 +1 @@
+
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/result_node.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/result_node.py
index 0d0589a5f38..63915a8f4a4 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/result_node.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/result_node.py
@@ -1,18 +1,7 @@
 import pytest
 from webdriver.bidi.modules.script import ContextTarget
 
-
-page_data = """
-    <div id="deep"><p><span></span></p><br/></div>
-    <div id="text-node"><p></p>Lorem</div>
-    <br/>
-    <svg id="foo"></svg>
-    <div id="comment"><!-- Comment --></div>
-    <script>
-        var svg = document.querySelector("svg");
-        svg.setAttributeNS("http://www.w3.org/2000/svg", "svg:foo", "bar");
-    </script>
-"""
+from ... import any_string, recursive_compare
 
 
 @pytest.mark.asyncio
@@ -25,6 +14,7 @@ page_data = """
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "attributes": {},
                     "childNodeCount": 0,
@@ -41,9 +31,9 @@ page_data = """
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "attributes": {
-                        "id": "foo",
                         "svg:foo": "bar",
                     },
                     "childNodeCount": 0,
@@ -56,24 +46,17 @@ page_data = """
         ),
         (   # all children including non-element nodes
             """
-                document.querySelector("div#text-node")
+                document.querySelector("#with-text-node")
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
-                    "attributes": {"id": "text-node"},
-                    "childNodeCount": 2,
+                    "attributes": {"id": "with-text-node"},
+                    "childNodeCount": 1,
                     "children": [{
                         "type": "node",
-                        "value": {
-                            "attributes": {},
-                            "childNodeCount": 0,
-                            "localName": "p",
-                            "namespaceURI": "http://www.w3.org/1999/xhtml",
-                            "nodeType": 1
-                        }
-                    },{
-                        "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "childNodeCount": 0,
                             "nodeType": 3,
@@ -88,15 +71,17 @@ page_data = """
         ),
         (   # children limited due to max depth
             """
-                document.querySelector("div#deep")
+                document.querySelector("#with-children")
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
-                    "attributes": {"id": "deep"},
+                    "attributes": {"id": "with-children"},
                     "childNodeCount": 2,
                     "children": [{
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "attributes": {},
                             "childNodeCount": 1,
@@ -104,8 +89,9 @@ page_data = """
                             "namespaceURI": "http://www.w3.org/1999/xhtml",
                             "nodeType": 1
                         }
-                    },{
+                    }, {
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "attributes": {},
                             "childNodeCount": 0,
@@ -126,6 +112,7 @@ page_data = """
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "attributes": {},
                     "childNodeCount": 0,
@@ -144,9 +131,9 @@ page_data = """
         "not_connected",
     ]
 )
-async def test_element_node(bidi_session, inline, top_context, expression, expected):
+async def test_element_node(bidi_session, get_test_page, top_context, expression, expected):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.evaluate(
@@ -155,7 +142,7 @@ async def test_element_node(bidi_session, inline, top_context, expression, expec
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -164,25 +151,27 @@ async def test_element_node(bidi_session, inline, top_context, expression, expec
     [
         (
             """
-                document.querySelector("svg").attributes[0]
+                document.querySelector("input#button").attributes[0]
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
                     "localName": "id",
                     "namespaceURI": None,
                     "nodeType": 2,
-                    "nodeValue": "foo",
+                    "nodeValue": "button",
                 },
             },
-        ),(
+        ), (
             """
-                document.querySelector("svg").attributes[1]
+                document.querySelector("svg").attributes[0]
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -195,12 +184,12 @@ async def test_element_node(bidi_session, inline, top_context, expression, expec
         ),
     ], ids=[
         "basic",
-        "namespace",
+        "namespaceURI",
     ]
 )
-async def test_attribute_node(bidi_session, inline, top_context, expression, expected):
+async def test_attribute_node(bidi_session, get_test_page, top_context, expression, expected):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.evaluate(
@@ -209,7 +198,7 @@ async def test_attribute_node(bidi_session, inline, top_context, expression, exp
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -218,10 +207,11 @@ async def test_attribute_node(bidi_session, inline, top_context, expression, exp
     [
         (
             """
-                document.querySelector("div#text-node").childNodes[1]
+                document.querySelector("#with-text-node").childNodes[0]
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -234,9 +224,9 @@ async def test_attribute_node(bidi_session, inline, top_context, expression, exp
         "basic",
     ]
 )
-async def test_text_node(bidi_session, inline, top_context, expression, expected):
+async def test_text_node(bidi_session, get_test_page, top_context, expression, expected):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.evaluate(
@@ -245,7 +235,7 @@ async def test_text_node(bidi_session, inline, top_context, expression, expected
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -258,6 +248,7 @@ async def test_text_node(bidi_session, inline, top_context, expression, expected
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -283,7 +274,7 @@ async def test_cdata_node(bidi_session, inline, new_tab, expression, expected):
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -296,6 +287,7 @@ async def test_cdata_node(bidi_session, inline, new_tab, expression, expected):
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -317,14 +309,13 @@ async def test_processing_instruction_node(
         context=new_tab['context'], url=xml_page, wait="complete"
     )
 
-
     result = await bidi_session.script.evaluate(
         expression=expression,
         target=ContextTarget(new_tab["context"]),
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -333,10 +324,11 @@ async def test_processing_instruction_node(
     [
         (
             """
-                document.querySelector("div#comment").childNodes[0]
+                document.querySelector("#with-comment").childNodes[0]
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -349,9 +341,9 @@ async def test_processing_instruction_node(
         "basic",
     ]
 )
-async def test_comment_node(bidi_session, inline, top_context, expression, expected):
+async def test_comment_node(bidi_session, get_test_page, top_context, expression, expected):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.evaluate(
@@ -360,7 +352,7 @@ async def test_comment_node(bidi_session, inline, top_context, expression, expec
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -373,16 +365,19 @@ async def test_comment_node(bidi_session, inline, top_context, expression, expec
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 2,
                     "children": [{
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "childNodeCount": 0,
                             "nodeType": 10
                         }
                     }, {
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "attributes": {},
                             "childNodeCount": 2,
@@ -399,9 +394,9 @@ async def test_comment_node(bidi_session, inline, top_context, expression, expec
         "basic",
     ]
 )
-async def test_document_node(bidi_session, inline, top_context, expression, expected):
+async def test_document_node(bidi_session, get_test_page, top_context, expression, expected):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.evaluate(
@@ -410,7 +405,7 @@ async def test_document_node(bidi_session, inline, top_context, expression, expe
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -423,6 +418,7 @@ async def test_document_node(bidi_session, inline, top_context, expression, expe
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -434,9 +430,9 @@ async def test_document_node(bidi_session, inline, top_context, expression, expe
         "basic",
     ]
 )
-async def test_doctype_node(bidi_session, inline, top_context, expression, expected):
+async def test_doctype_node(bidi_session, get_test_page, top_context, expression, expected):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.evaluate(
@@ -445,7 +441,7 @@ async def test_doctype_node(bidi_session, inline, top_context, expression, expec
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
@@ -454,10 +450,35 @@ async def test_doctype_node(bidi_session, inline, top_context, expression, expec
     [
         (
             """
+                document.querySelector("#custom-element").shadowRoot;
+            """,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {
+                    "childNodeCount": 1,
+                    "children": [{
+                        "type": "node",
+                        "sharedId": any_string,
+                        "value": {
+                            "attributes": {"id": "in-shadow-dom"},
+                            "childNodeCount": 1,
+                            "localName": "div",
+                            "namespaceURI": "http://www.w3.org/1999/xhtml",
+                            "nodeType": 1
+                        }
+                    }],
+                    "nodeType": 11
+                }
+            }
+        ),
+        (
+            """
                 new DocumentFragment();
             """,
             {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "childNodeCount": 0,
                     "children": [],
@@ -466,14 +487,15 @@ async def test_doctype_node(bidi_session, inline, top_context, expression, expec
             }
         ),
     ], ids=[
-        "basic",
+        "shadowRoot",
+        "not connected"
     ]
 )
 async def test_document_fragment_node(
-    bidi_session, inline, top_context, expression, expected
+    bidi_session, get_test_page, top_context, expression, expected
 ):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.evaluate(
@@ -482,30 +504,31 @@ async def test_document_fragment_node(
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
 
 
 @pytest.mark.asyncio
-async def test_node_within_object(bidi_session, inline, top_context):
+async def test_node_within_object(bidi_session, get_test_page, top_context):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.evaluate(
-        expression="""({"elem": document.querySelector("span")})""",
+        expression="""({"elem": document.querySelector("img")})""",
         target=ContextTarget(top_context["context"]),
         await_promise=False,
     )
 
-    assert result == {
+    expected = {
         "type": "object",
         "value": [
             ["elem", {
                 "type": "node",
+                "sharedId": any_string,
                 "value": {
                     "attributes": {},
                     "childNodeCount": 0,
-                    "localName": "span",
+                    "localName": "img",
                     "namespaceURI": "http://www.w3.org/1999/xhtml",
                     "nodeType": 1
                 }
@@ -513,22 +536,25 @@ async def test_node_within_object(bidi_session, inline, top_context):
         ]
     }
 
+    recursive_compare(expected, result)
+
 
 @pytest.mark.asyncio
 @pytest.mark.parametrize(
     "expression, expected",
     [
         (
-            "document.getElementsByTagName('span')",
+            "document.getElementsByTagName('img')",
             {
                 "type": "htmlcollection",
                 "value": [
                     {
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "attributes": {},
                             "childNodeCount": 0,
-                            "localName": "span",
+                            "localName": "img",
                             "namespaceURI": "http://www.w3.org/1999/xhtml",
                             "nodeType": 1
                         }
@@ -537,16 +563,17 @@ async def test_node_within_object(bidi_session, inline, top_context):
             }
         ),
         (
-            "document.querySelectorAll('span')",
+            "document.querySelectorAll('img')",
             {
                 "type": "nodelist",
                 "value": [
                     {
                         "type": "node",
+                        "sharedId": any_string,
                         "value": {
                             "attributes": {},
                             "childNodeCount": 0,
-                            "localName": "span",
+                            "localName": "img",
                             "namespaceURI": "http://www.w3.org/1999/xhtml",
                             "nodeType": 1
                         }
@@ -561,13 +588,13 @@ async def test_node_within_object(bidi_session, inline, top_context):
 )
 async def test_node_within_dom_collection(
     bidi_session,
-    inline,
+    get_test_page,
     top_context,
     expression,
     expected
 ):
     await bidi_session.browsing_context.navigate(
-        context=top_context['context'], url=inline(page_data), wait="complete"
+        context=top_context['context'], url=get_test_page(), wait="complete"
     )
 
     result = await bidi_session.script.evaluate(
@@ -576,4 +603,4 @@ async def test_node_within_dom_collection(
         await_promise=False,
     )
 
-    assert result == expected
+    recursive_compare(expected, result)
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/sandbox.py b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/sandbox.py
index ba4eb732d16..3a6771780d5 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/sandbox.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/bidi/script/evaluate/sandbox.py
@@ -128,6 +128,23 @@ async def test_sandbox_with_side_effects(bidi_session, new_tab):
 
 
 @pytest.mark.asyncio
+async def test_sandbox_returns_same_node(bidi_session, new_tab):
+    node = await bidi_session.script.evaluate(
+        expression="document.querySelector('body')",
+        target=ContextTarget(new_tab["context"]),
+        await_promise=True,
+    )
+    recursive_compare({"type": "node", "sharedId": any_string}, node)
+
+    node_sandbox = await bidi_session.script.evaluate(
+        expression="document.querySelector('body')",
+        target=ContextTarget(new_tab["context"], sandbox="sandbox_1"),
+        await_promise=True,
+    )
+    assert node_sandbox == node
+
+
+@pytest.mark.asyncio
 @pytest.mark.parametrize("await_promise", [True, False])
 async def test_exception_details(bidi_session, new_tab, await_promise):
     if await_promise:
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/element_clear/clear.py b/tests/wpt/web-platform-tests/webdriver/tests/element_clear/clear.py
index fa96ed3a58a..9b0d7f2133f 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/element_clear/clear.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/element_clear/clear.py
@@ -45,7 +45,7 @@ def test_null_response_value(session, inline):
 
 
 def test_no_top_browsing_context(session, closed_window):
-    element = Element("foo", session)
+    element = Element(session, "foo")
     response = element_clear(session, element)
     assert_error(response, "no such window")
 
@@ -59,14 +59,14 @@ def test_no_top_browsing_context(session, closed_window):
 
 
 def test_no_browsing_context(session, closed_frame):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = element_clear(session, element)
     assert_error(response, "no such window")
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = element_clear(session, element)
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/element_click/click.py b/tests/wpt/web-platform-tests/webdriver/tests/element_click/click.py
index 79be957d1b2..3c3f7d70e6c 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/element_click/click.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/element_click/click.py
@@ -21,7 +21,7 @@ def test_null_response_value(session, inline):
 
 
 def test_no_top_browsing_context(session, closed_window):
-    element = Element("foo", session)
+    element = Element(session, "foo")
     response = element_click(session, element)
     assert_error(response, "no such window")
 
@@ -35,14 +35,14 @@ def test_no_top_browsing_context(session, closed_window):
 
 
 def test_no_browsing_context(session, closed_frame):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = element_click(session, element)
     assert_error(response, "no such window")
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = element_click(session, element)
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/element_send_keys/send_keys.py b/tests/wpt/web-platform-tests/webdriver/tests/element_send_keys/send_keys.py
index 854d2af42cc..281c7ad719d 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/element_send_keys/send_keys.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/element_send_keys/send_keys.py
@@ -34,7 +34,7 @@ def test_null_response_value(session, inline):
 
 
 def test_no_top_browsing_context(session, closed_window):
-    element = Element("foo", session)
+    element = Element(session, "foo")
     response = element_send_keys(session, element, "foo")
     assert_error(response, "no such window")
 
@@ -48,14 +48,14 @@ def test_no_top_browsing_context(session, closed_window):
 
 
 def test_no_browsing_context(session, closed_frame):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = element_send_keys(session, element, "foo")
     assert_error(response, "no such window")
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = element_send_keys(session, element, "foo")
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/execute_async_script/arguments.py b/tests/wpt/web-platform-tests/webdriver/tests/execute_async_script/arguments.py
index 55fd9527aea..ead6e0c186e 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/execute_async_script/arguments.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/execute_async_script/arguments.py
@@ -55,7 +55,7 @@ def test_object(session):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     result = execute_async_script(session, """
         arguments[1](true);
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/execute_script/arguments.py b/tests/wpt/web-platform-tests/webdriver/tests/execute_script/arguments.py
index 53c49aaa689..b8657ce0efa 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/execute_script/arguments.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/execute_script/arguments.py
@@ -47,7 +47,7 @@ def test_object(session):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     result = execute_script(session, "return true;", args=[element])
     assert_error(result, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/get_computed_label/get.py b/tests/wpt/web-platform-tests/webdriver/tests/get_computed_label/get.py
index 8124fee0c9d..0dc00a471a9 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/get_computed_label/get.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/get_computed_label/get.py
@@ -19,7 +19,7 @@ def test_no_browsing_context(session, closed_frame):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     result = get_computed_label(session, element.id)
     assert_error(result, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/get_computed_role/get.py b/tests/wpt/web-platform-tests/webdriver/tests/get_computed_role/get.py
index dcfe753f0dc..8d15e8fb90d 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/get_computed_role/get.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/get_computed_role/get.py
@@ -19,7 +19,7 @@ def test_no_browsing_context(session, closed_frame):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     result = get_computed_role(session, element.id)
     assert_error(result, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/get_element_attribute/get.py b/tests/wpt/web-platform-tests/webdriver/tests/get_element_attribute/get.py
index e23d7e4d5ab..375f25032c0 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/get_element_attribute/get.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/get_element_attribute/get.py
@@ -30,7 +30,7 @@ def test_no_browsing_context(session, closed_frame):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = get_element_attribute(session, element.id, "id")
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/get_element_css_value/get.py b/tests/wpt/web-platform-tests/webdriver/tests/get_element_css_value/get.py
index f9797c2cff5..6f0a8a56395 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/get_element_css_value/get.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/get_element_css_value/get.py
@@ -34,7 +34,7 @@ def test_no_browsing_context(session, closed_frame):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = get_element_css_value(session, element.id, "display")
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/get_element_property/get.py b/tests/wpt/web-platform-tests/webdriver/tests/get_element_property/get.py
index 072375804e8..84e4e896281 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/get_element_property/get.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/get_element_property/get.py
@@ -31,7 +31,7 @@ def test_no_browsing_context(session, closed_frame):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = get_element_property(session, element.id, "id")
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/get_element_rect/get.py b/tests/wpt/web-platform-tests/webdriver/tests/get_element_rect/get.py
index 7f87b44e7e9..942f119f43c 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/get_element_rect/get.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/get_element_rect/get.py
@@ -34,7 +34,7 @@ def test_no_browsing_context(session, closed_frame):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = get_element_rect(session, element.id)
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/get_element_shadow_root/get.py b/tests/wpt/web-platform-tests/webdriver/tests/get_element_shadow_root/get.py
index 61d0d008100..d9adde0b9e3 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/get_element_shadow_root/get.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/get_element_shadow_root/get.py
@@ -30,7 +30,7 @@ def test_no_browsing_context(session, closed_frame):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = get_shadow_root(session, element.id)
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/get_element_tag_name/get.py b/tests/wpt/web-platform-tests/webdriver/tests/get_element_tag_name/get.py
index 1bf19309e45..3bb03d79886 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/get_element_tag_name/get.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/get_element_tag_name/get.py
@@ -30,7 +30,7 @@ def test_no_browsing_context(session, closed_frame):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = get_element_tag_name(session, element.id)
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/get_element_text/get.py b/tests/wpt/web-platform-tests/webdriver/tests/get_element_text/get.py
index aa36c487c80..e8d559cf661 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/get_element_text/get.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/get_element_text/get.py
@@ -30,7 +30,7 @@ def test_no_browsing_context(session, closed_frame):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = get_element_text(session, element.id)
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/is_element_enabled/enabled.py b/tests/wpt/web-platform-tests/webdriver/tests/is_element_enabled/enabled.py
index 34e5cce4197..fccff383a55 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/is_element_enabled/enabled.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/is_element_enabled/enabled.py
@@ -33,7 +33,7 @@ def test_no_browsing_context(session, closed_frame):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = is_element_enabled(session, element.id)
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/is_element_selected/selected.py b/tests/wpt/web-platform-tests/webdriver/tests/is_element_selected/selected.py
index b119705e7dd..1fb5b9ce86b 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/is_element_selected/selected.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/is_element_selected/selected.py
@@ -49,7 +49,7 @@ def test_no_browsing_context(session, closed_frame):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = is_element_selected(session, element.id)
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/print/__init__.py b/tests/wpt/web-platform-tests/webdriver/tests/print/__init__.py
index 788c0e1a317..e69de29bb2d 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/print/__init__.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/print/__init__.py
@@ -1,21 +0,0 @@
-def load_pdf_document(session, inline, pdf_data):
-    """Load a PDF document in the browser using pdf.js"""
-    session.url = inline("""
-<!doctype html>
-<script src="/_pdf_js/pdf.js"></script>
-<canvas></canvas>
-<script>
-async function getText() {
-  pages = [];
-  let loadingTask = pdfjsLib.getDocument({data: atob("%s")});
-  let pdf = await loadingTask.promise;
-  for (let pageNumber=1; pageNumber<=pdf.numPages; pageNumber++) {
-    let page = await pdf.getPage(pageNumber);
-    textContent = await page.getTextContent()
-    text = textContent.items.map(x => x.str).join("");
-    pages.push(text);
-  }
-  return pages
-}
-</script>
-""" % pdf_data)
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/print/printcmd.py b/tests/wpt/web-platform-tests/webdriver/tests/print/printcmd.py
index 169e2249a99..415786675c5 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/print/printcmd.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/print/printcmd.py
@@ -3,7 +3,6 @@ from base64 import decodebytes
 
 import pytest
 
-from . import load_pdf_document
 from tests.support.asserts import assert_error, assert_success
 
 
@@ -91,7 +90,7 @@ def test_large_html_document(session, inline):
     (["-5", "2-"], ["Page 1", "Page 2", "Page 3", "Page 4", "Page 5", "Page 6", "Page 7", "Page 8", "Page 9", "Page 10"]),
     ([], ["Page 1", "Page 2", "Page 3", "Page 4", "Page 5", "Page 6", "Page 7", "Page 8", "Page 9", "Page 10"]),
 ])
-def test_page_ranges_document(session, inline, ranges, expected):
+def test_page_ranges_document(session, inline, load_pdf_document, ranges, expected):
     session.url = inline("""
 <style>
 div {page-break-after: always}
@@ -116,7 +115,7 @@ div {page-break-after: always}
     # TODO: Test that the output is reasonable
     assert_pdf(pdf)
 
-    load_pdf_document(session, inline, value)
+    load_pdf_document(value)
     pages = session.execute_async_script("""let callback = arguments[arguments.length - 1];
 window.getText().then(pages => callback(pages));""")
     assert pages == expected
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures.py b/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures.py
index e63c0d01d26..7fff07bb407 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures.py
@@ -250,6 +250,118 @@ def iframe(inline):
     return iframe
 
 
+
+@pytest.fixture
+def get_test_page(iframe, inline):
+    def get_test_page(
+        as_frame=False,
+        frame_doc=None,
+        shadow_doc=None,
+        nested_shadow_dom=False
+    ):
+        if frame_doc is None:
+            frame_doc = """<div id="in-frame"><input type="checkbox"/></div>"""
+
+        if shadow_doc is None:
+            shadow_doc = """<div id="in-shadow-dom"><input type="checkbox"/></div>"""
+
+        definition_inner_shadow_dom = ""
+        if nested_shadow_dom:
+            definition_inner_shadow_dom = f"""
+                customElements.define('inner-custom-element',
+                    class extends HTMLElement {{
+                        constructor() {{
+                            super();
+                            this.attachShadow({{mode: "open"}}).innerHTML = `
+                                {shadow_doc}
+                            `;
+                        }}
+                    }}
+                );
+            """
+            shadow_doc = """
+                <style>
+                    inner-custom-element {
+                        display:block; width:20px; height:20px;
+                    }
+                </style>
+                <div id="in-nested-shadow-dom">
+                    <inner-custom-element></inner-custom-element>
+                </div>
+                """
+
+        page_data = f"""
+            <style>
+                custom-element {{
+                    display:block; width:20px; height:20px;
+                }}
+            </style>
+            <div id="with-children"><p><span></span></p><br/></div>
+            <div id="with-text-node">Lorem</div>
+            <div id="with-comment"><!-- Comment --></div>
+
+            <input id="button" type="button"/>
+            <input id="checkbox" type="checkbox"/>
+            <input id="file" type="file"/>
+            <input id="hidden" type="hidden"/>
+            <input id="text" type="text"/>
+
+            {iframe(frame_doc)}
+
+            <img />
+            <svg></svg>
+
+            <custom-element id="custom-element"></custom-element>
+            <script>
+                var svg = document.querySelector("svg");
+                svg.setAttributeNS("http://www.w3.org/2000/svg", "svg:foo", "bar");
+
+                customElements.define("custom-element",
+                    class extends HTMLElement {{
+                        constructor() {{
+                            super();
+                            this.attachShadow({{mode: "open"}}).innerHTML = `{shadow_doc}`;
+                        }}
+                    }}
+                );
+                {definition_inner_shadow_dom}
+            </script>"""
+
+        if as_frame:
+            return inline(iframe(page_data))
+        else:
+            return inline(page_data)
+
+    return get_test_page
+
+
+@pytest.fixture
+def test_page_with_pdf_js(inline):
+    """Prepare an url to load a PDF document in the browser using pdf.js"""
+    def test_page_with_pdf_js(encoded_pdf_data):
+        return inline("""
+<!doctype html>
+<script src="/_pdf_js/pdf.js"></script>
+<canvas></canvas>
+<script>
+async function getText() {
+  pages = [];
+  let loadingTask = pdfjsLib.getDocument({data: atob("%s")});
+  let pdf = await loadingTask.promise;
+  for (let pageNumber=1; pageNumber<=pdf.numPages; pageNumber++) {
+    let page = await pdf.getPage(pageNumber);
+    textContent = await page.getTextContent()
+    text = textContent.items.map(x => x.str).join("");
+    pages.push(text);
+  }
+  return pages
+}
+</script>
+""" % encoded_pdf_data)
+
+    return test_page_with_pdf_js
+
+
 @pytest.fixture
 async def top_context(bidi_session):
     contexts = await bidi_session.browsing_context.get_tree()
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures_bidi.py b/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures_bidi.py
index 6273b8f1575..6f1106373d9 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures_bidi.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures_bidi.py
@@ -140,3 +140,33 @@ def add_and_remove_iframe(bidi_session, inline):
 
         return frame_id
     return closed_frame
+
+
+@pytest.fixture
+def load_pdf(bidi_session, test_page_with_pdf_js, top_context):
+    """Load a PDF document in the browser using pdf.js"""
+    async def load_pdf(encoded_pdf_data, context=top_context["context"]):
+        url = test_page_with_pdf_js(encoded_pdf_data)
+
+        await bidi_session.browsing_context.navigate(
+            context=context, url=url, wait="complete"
+        )
+
+    return load_pdf
+
+
+@pytest.fixture
+def get_pdf_content(bidi_session, top_context, load_pdf):
+    """Load a PDF document in the browser using pdf.js and extract content from the document"""
+    async def get_pdf_content(encoded_pdf_data, context=top_context["context"]):
+        await load_pdf(encoded_pdf_data=encoded_pdf_data, context=context)
+
+        result = await bidi_session.script.call_function(
+            function_declaration="""() => { return window.getText()}""",
+            target=ContextTarget(context),
+            await_promise=True,
+        )
+
+        return result
+
+    return get_pdf_content
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures_http.py b/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures_http.py
index 748fe214a2b..65ea064c519 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures_http.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/support/fixtures_http.py
@@ -178,89 +178,9 @@ def stale_element(current_session, get_test_page):
 
 
 @pytest.fixture
-def get_test_page(iframe, inline):
-    def get_test_page(
-        as_frame=False,
-        frame_doc=None,
-        shadow_doc=None,
-        nested_shadow_dom=False
-    ):
-        if frame_doc is None:
-            frame_doc = """<div id="in-frame"><input type="checkbox"/></div>"""
-
-        if shadow_doc is None:
-            shadow_doc = """
-                <div id="in-shadow-dom">
-                    <input type="checkbox"/>
-                </div>
-            """
-
-        definition_inner_shadow_dom = ""
-        if nested_shadow_dom:
-            definition_inner_shadow_dom = f"""
-                customElements.define('inner-custom-element',
-                    class extends HTMLElement {{
-                        constructor() {{
-                            super();
-                            this.attachShadow({{mode: "open"}}).innerHTML = `
-                                {shadow_doc}
-                            `;
-                        }}
-                    }}
-                );
-            """
-            shadow_doc = """
-                <style>
-                    inner-custom-element {
-                        display:block; width:20px; height:20px;
-                    }
-                </style>
-                <div id="in-nested-shadow-dom">
-                    <inner-custom-element></inner-custom-element>
-                </div>
-                """
-
-        page_data = f"""
-            <style>
-                custom-element {{
-                    display:block; width:20px; height:20px;
-                }}
-            </style>
-            <div id="with-children"><p><span></span></p><br/></div>
-            <div id="with-text-node">Lorem</div>
-            <div id="with-comment"><!-- Comment --></div>
-
-            <input id="button" type="button"/>
-            <input id="checkbox" type="checkbox"/>
-            <input id="file" type="file"/>
-            <input id="hidden" type="hidden"/>
-            <input id="text" type="text"/>
-
-            {iframe(frame_doc)}
-
-            <svg></svg>
-
-            <custom-element id="custom-element"></custom-element>
-            <script>
-                var svg = document.querySelector("svg");
-                svg.setAttributeNS("http://www.w3.org/2000/svg", "svg:foo", "bar");
-
-                customElements.define("custom-element",
-                    class extends HTMLElement {{
-                        constructor() {{
-                            super();
-                            this.attachShadow({{mode: "open"}}).innerHTML = `
-                                {shadow_doc}
-                            `;
-                        }}
-                    }}
-                );
-                {definition_inner_shadow_dom}
-            </script>"""
+def load_pdf_document(current_session, test_page_with_pdf_js):
+    """Load a PDF document in the browser using pdf.js"""
+    def load_pdf_document(encoded_pdf_data):
+        current_session.url = test_page_with_pdf_js(encoded_pdf_data)
 
-        if as_frame:
-            return inline(iframe(page_data))
-        else:
-            return inline(page_data)
-
-    return get_test_page
+    return load_pdf_document
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/take_element_screenshot/screenshot.py b/tests/wpt/web-platform-tests/webdriver/tests/take_element_screenshot/screenshot.py
index deea9514ed4..ea4cc290db4 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/take_element_screenshot/screenshot.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/take_element_screenshot/screenshot.py
@@ -33,7 +33,7 @@ def test_no_browsing_context(session, closed_frame, inline):
 
 
 def test_no_such_element_with_invalid_value(session):
-    element = Element("foo", session)
+    element = Element(session, "foo")
 
     response = take_element_screenshot(session, element.id)
     assert_error(response, "no such element")
diff --git a/tests/wpt/web-platform-tests/webrtc-extensions/RTCRtpTransceiver-headerExtensionControl.html b/tests/wpt/web-platform-tests/webrtc-extensions/RTCRtpTransceiver-headerExtensionControl.html
index 770aa49f052..b6dc7da5d40 100644
--- a/tests/wpt/web-platform-tests/webrtc-extensions/RTCRtpTransceiver-headerExtensionControl.html
+++ b/tests/wpt/web-platform-tests/webrtc-extensions/RTCRtpTransceiver-headerExtensionControl.html
@@ -57,10 +57,10 @@ test(function(t) {
   const transceiver = pc.addTransceiver('audio');
   const capabilities = transceiver.getHeaderExtensionsToNegotiate();
   capabilities[0].uri = "4711";
-  assert_throws_dom("NotSupportedError", () => {
+  assert_throws_dom('InvalidModificationError', () => {
     transceiver.setHeaderExtensionsToNegotiate(capabilities);
-  }, 'transceiver should throw NotSupported when setting an unknown URI');
-}, `setHeaderExtensionsToNegotiate throws NotSupported on encountering unknown URI`);
+  }, 'transceiver should throw InvalidModificationError when setting an unknown URI');
+}, `setHeaderExtensionsToNegotiate throws InvalidModificationError on encountering unknown URI`);
 
 test(function(t) {
   const pc = new RTCPeerConnection();
@@ -72,7 +72,7 @@ test(function(t) {
   });
   ["sendonly", "recvonly", "inactive", "stopped"].map(direction => {
     capability.direction = direction;
-    assert_throws_dom("InvalidModificationError", () => {
+    assert_throws_dom('InvalidModificationError', () => {
       transceiver.setHeaderExtensionsToNegotiate(capabilities);
     }, `transceiver should throw InvalidModificationError when setting a mandatory header extension\'s direction to ${direction}`);
   });
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-getStats.https.html b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-getStats.https.html
index 8062618dd61..96e763985c0 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-getStats.https.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-getStats.https.html
@@ -187,8 +187,8 @@
     8.5.  The stats selection algorithm
       3.  If selector is an RTCRtpSender, gather stats for and add the following objects
           to result:
-        - All RTCOutboundRTPStreamStats objects corresponding to selector.
-        - All stats objects referenced directly or indirectly by the RTCOutboundRTPStreamStats
+        - All RTCOutboundRtpStreamStats objects corresponding to selector.
+        - All stats objects referenced directly or indirectly by the RTCOutboundRtpStreamStats
           objects added.
   */
   promise_test(async t => {
@@ -208,8 +208,8 @@
     8.5.  The stats selection algorithm
       4.  If selector is an RTCRtpReceiver, gather stats for and add the following objects
           to result:
-        - All RTCInboundRTPStreamStats objects corresponding to selector.
-        - All stats objects referenced directly or indirectly by the RTCInboundRTPStreamStats
+        - All RTCInboundRtpStreamStats objects corresponding to selector.
+        - All stats objects referenced directly or indirectly by the RTCInboundRtpStreamStats
           added.
    */
   promise_test(async t => {
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCRtpReceiver-getStats.https.html b/tests/wpt/web-platform-tests/webrtc/RTCRtpReceiver-getStats.https.html
index 06d0f0b39bf..b8daf12fc27 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCRtpReceiver-getStats.https.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCRtpReceiver-getStats.https.html
@@ -40,8 +40,8 @@
     8.5. The stats selection algorithm
       4.  If selector is an RTCRtpReceiver, gather stats for and add the following objects
           to result:
-        - All RTCInboundRTPStreamStats objects corresponding to selector.
-        - All stats objects referenced directly or indirectly by the RTCInboundRTPStreamStats
+        - All RTCInboundRtpStreamStats objects corresponding to selector.
+        - All stats objects referenced directly or indirectly by the RTCInboundRtpStreamStats
           added.
    */
 
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCRtpSender-getStats.https.html b/tests/wpt/web-platform-tests/webrtc/RTCRtpSender-getStats.https.html
index 27ac3e952f1..62c01aafa6a 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCRtpSender-getStats.https.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCRtpSender-getStats.https.html
@@ -35,8 +35,8 @@
     8.5. The stats selection algorithm
       3.  If selector is an RTCRtpSender, gather stats for and add the following objects
           to result:
-        - All RTCOutboundRTPStreamStats objects corresponding to selector.
-        - All stats objects referenced directly or indirectly by the RTCOutboundRTPStreamStats
+        - All RTCOutboundRtpStreamStats objects corresponding to selector.
+        - All stats objects referenced directly or indirectly by the RTCOutboundRtpStreamStats
           objects added.
    */
 
diff --git a/tests/wpt/web-platform-tests/workers/Worker_script_mimetype.htm b/tests/wpt/web-platform-tests/workers/Worker_script_mimetype.htm
index 4768fe70bcb..d2278d3717c 100644
--- a/tests/wpt/web-platform-tests/workers/Worker_script_mimetype.htm
+++ b/tests/wpt/web-platform-tests/workers/Worker_script_mimetype.htm
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <title>Worker constructor with wrong MIME type scripts</title>
 <meta charset="utf-8">
+<meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>