From c084436da7868db4ec43e8228f254abde16c5818 Mon Sep 17 00:00:00 2001
From: WPT Sync Bot <josh+wptsync@joshmatthews.net>
Date: Sun, 28 Apr 2019 21:53:47 -0400
Subject: Update web-platform-tests to revision
 3b0853b41cdb88c713f2ac3636f5b69c14b31d49

---
 .../css/CSS2/lists/counter-reset-increment-002.xht |  1 -
 .../counter-reset-increment-display-contents.html  | 19 ----------
 .../counter-reset-increment-display-none.html      | 19 ----------
 ...unter-reset-increment-set-display-contents.html | 21 ++++++++++++
 .../counter-reset-increment-set-display-none.html  | 21 ++++++++++++
 .../css/css-lists/counter-set-001-ref.html         | 37 ++++++++++++++++++++
 .../css/css-lists/counter-set-001.html             | 40 ++++++++++++++++++++++
 .../css/css-lists/li-list-item-counter-ref.html    | 26 ++++++++++++++
 .../css/css-lists/li-list-item-counter.html        | 32 +++++++++++++++++
 .../css-lists/li-value-counter-reset-001-ref.html  | 27 +++++++++++++++
 .../css/css-lists/li-value-counter-reset-001.html  | 30 ++++++++++++++++
 .../multicol-span-all-button-001-ref.html          | 29 ++++++++++++++++
 .../css-multicol/multicol-span-all-button-001.html | 28 +++++++++++++++
 .../multicol-span-all-button-002-ref.html          | 38 ++++++++++++++++++++
 .../css-multicol/multicol-span-all-button-002.html | 37 ++++++++++++++++++++
 .../multicol-span-all-button-003-ref.html          | 38 ++++++++++++++++++++
 .../css-multicol/multicol-span-all-button-003.html | 37 ++++++++++++++++++++
 .../css-scroll-snap/overflowing-snap-areas.html    | 15 ++++++++
 .../fetch/api/request/request-keepalive.html       |  2 +-
 .../interfaces/mediacapture-streams.idl            | 11 ------
 .../web-platform-tests/interfaces/user-timing.idl  |  6 ++--
 21 files changed, 460 insertions(+), 54 deletions(-)
 delete mode 100644 tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-display-contents.html
 delete mode 100644 tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-display-none.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-set-display-contents.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-set-display-none.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-lists/counter-set-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-lists/counter-set-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-lists/li-list-item-counter-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-lists/li-list-item-counter.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-lists/li-value-counter-reset-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-lists/li-value-counter-reset-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-002-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-002.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-003-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-003.html

(limited to 'tests/wpt/web-platform-tests')

diff --git a/tests/wpt/web-platform-tests/css/CSS2/lists/counter-reset-increment-002.xht b/tests/wpt/web-platform-tests/css/CSS2/lists/counter-reset-increment-002.xht
index bf422ba1eb8..8dc50ca60b2 100644
--- a/tests/wpt/web-platform-tests/css/CSS2/lists/counter-reset-increment-002.xht
+++ b/tests/wpt/web-platform-tests/css/CSS2/lists/counter-reset-increment-002.xht
@@ -29,7 +29,6 @@
   li:before
   {
   content: counter(list-item) ". ";
-  counter-increment: list-item;
   }
   ]]></style>
 
diff --git a/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-display-contents.html b/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-display-contents.html
deleted file mode 100644
index a59576b2534..00000000000
--- a/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-display-contents.html
+++ /dev/null
@@ -1,19 +0,0 @@
-<!DOCTYPE html>
-<meta charset="utf-8">
-<title>CSS Lists: counter-reset and counter-increment on display:contents</title>
-<link rel="author" title="Rune Lillesveen" href="mailto:futhark@chromium.org">
-<link rel="help" href="https://drafts.csswg.org/css-lists/#counters-without-boxes">
-<link rel="match" href="counter-7-ref.html">
-<style>
-  .inc { counter-increment: x }
-  .reset-6 { counter-reset: x 6 }
-  .reset-666 { counter-reset: x 666 }
-  .contents { display: contents }
-  .result::before { content: counter(x) }
-</style>
-<p>You should see the number 7 below.</p>
-<div>
-  <span class="reset-6"></span>
-  <span class="contents reset-666 inc"></span>
-  <span class="inc result"></span>
-</div>
diff --git a/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-display-none.html b/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-display-none.html
deleted file mode 100644
index 3b344a751c1..00000000000
--- a/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-display-none.html
+++ /dev/null
@@ -1,19 +0,0 @@
-<!DOCTYPE html>
-<meta charset="utf-8">
-<title>CSS Lists: counter-reset and counter-increment on display:none</title>
-<link rel="author" title="Rune Lillesveen" href="mailto:futhark@chromium.org">
-<link rel="help" href="https://drafts.csswg.org/css-lists/#counters-without-boxes">
-<link rel="match" href="counter-7-ref.html">
-<style>
-  .inc { counter-increment: x }
-  .reset-6 { counter-reset: x 6 }
-  .reset-666 { counter-reset: x 666 }
-  .none { display: none }
-  .result::before { content: counter(x) }
-</style>
-<p>You should see the number 7 below.</p>
-<div>
-  <span class="reset-6"></span>
-  <span class="none reset-666 inc"></span>
-  <span class="inc result"></span>
-</div>
diff --git a/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-set-display-contents.html b/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-set-display-contents.html
new file mode 100644
index 00000000000..6508df0da15
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-set-display-contents.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Lists: counter-reset, counter-set and counter-increment on display:contents</title>
+<link rel="author" title="Rune Lillesveen" href="mailto:futhark@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-lists/#counters-without-boxes">
+<link rel="match" href="counter-7-ref.html">
+<style>
+  .inc { counter-increment: x }
+  .reset-6 { counter-reset: x 6 }
+  .reset-666 { counter-reset: x 666 }
+  .set-666 { counter-set: x 666 }
+  .contents { display: contents }
+  .result::before { content: counter(x) }
+</style>
+<p>You should see the number 7 below.</p>
+<div>
+  <span class="reset-6"></span>
+  <span class="contents reset-666 inc"></span>
+  <span class="contents set-666"></span>
+  <span class="inc result"></span>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-set-display-none.html b/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-set-display-none.html
new file mode 100644
index 00000000000..510fd8b6482
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-lists/counter-reset-increment-set-display-none.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Lists: counter-reset, counter-set and counter-increment on display:none</title>
+<link rel="author" title="Rune Lillesveen" href="mailto:futhark@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-lists/#counters-without-boxes">
+<link rel="match" href="counter-7-ref.html">
+<style>
+  .inc { counter-increment: x }
+  .reset-6 { counter-reset: x 6 }
+  .reset-666 { counter-reset: x 666 }
+  .set-666 { counter-set: x 666 }
+  .none { display: none }
+  .result::before { content: counter(x) }
+</style>
+<p>You should see the number 7 below.</p>
+<div>
+  <span class="reset-6"></span>
+  <span class="none reset-666 inc"></span>
+  <span class="none set-666"></span>
+  <span class="inc result"></span>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-lists/counter-set-001-ref.html b/tests/wpt/web-platform-tests/css/css-lists/counter-set-001-ref.html
new file mode 100644
index 00000000000..be06ea1dc94
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-lists/counter-set-001-ref.html
@@ -0,0 +1,37 @@
+<!DOCTYPE HTML>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>CSS Lists: basic tests for 'counter-set'</title>
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.org">
+  <style>
+html,body {
+  color:black; background-color:white; font:16px/1 monospace; padding:0; margin:0;
+}
+  </style>
+</head>
+<body>
+
+<span>7</span><!-- "7" -->
+<span>0</span><!-- "0" -->
+<span>7</span><!-- "7" -->
+<span>8</span><!-- "8" -->
+<span>2</span><!-- "2" -->
+<x>
+  <span>2</span><!-- "2" -->
+</x>
+<span>3</span><!-- "3" -->
+<x>
+  <span>0</span><!-- "0" -->
+  <span>2</span><!-- "2" -->
+  <x>
+    <span>2.5</span><!-- "2.5" -->
+  </x>
+</x>
+<span>3</span><!-- "3" -->
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-lists/counter-set-001.html b/tests/wpt/web-platform-tests/css/css-lists/counter-set-001.html
new file mode 100644
index 00000000000..3be4c737c2b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-lists/counter-set-001.html
@@ -0,0 +1,40 @@
+<!DOCTYPE HTML>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>CSS Lists: basic tests for 'counter-set'</title>
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.org">
+  <link rel="help" href="https://drafts.csswg.org/css-lists/#propdef-counter-set">
+  <link rel="match" href="counter-set-001-ref.html">
+  <style>
+html,body {
+  color:black; background-color:white; font:16px/1 monospace; padding:0; margin:0;
+}
+span::before { content: counters(n, '.'); }
+  </style>
+</head>
+<body>
+
+<span style="counter-set: n 7"></span><!-- "7" -->
+<span style="counter-set: n"></span><!-- "0" -->
+<span style="counter-set: n 8 n 7"></span><!-- "7" -->
+<span style="counter-set: n 6; counter-increment: n 2"></span><!-- "8" -->
+<span style="counter-set: n; counter-increment: n 2"></span><!-- "2" -->
+<x style="counter-reset: n 9">
+  <span style="counter-set: n 2"></span><!-- "2" -->
+</x>
+<span style="counter-increment: n"></span><!-- "3" -->
+<x style="counter-reset: n 9">
+  <span style="counter-set: n"></span><!-- "0" -->
+  <span style="counter-set: n 2"></span><!-- "2" -->
+  <x style="counter-reset: n 1">
+    <span style="counter-set: n 5"></span><!-- "2.5" -->
+  </x>
+</x>
+<span style="counter-increment: n"></span><!-- "3" -->
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-lists/li-list-item-counter-ref.html b/tests/wpt/web-platform-tests/css/css-lists/li-list-item-counter-ref.html
new file mode 100644
index 00000000000..8340d6d7f65
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-lists/li-list-item-counter-ref.html
@@ -0,0 +1,26 @@
+<!DOCTYPE HTML>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>Reference:_CSS Lists: 'counter-increment:list-item' on LI</title>
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.org">
+  <style>
+html,body {
+  color:black; background-color:white; font:16px/1 monospace; padding:0; margin:0;
+}
+body { margin-left: 10em; }
+  </style>
+</head>
+<body>
+
+<ol><li value=0>a<li value=4>b<li value=4>c</ol>
+<ol><li value=0>a<li value=9>b<li value=9>c</ol>
+<ol><li value=-1>a<li value=3>b<li value=2>c</ol>
+<ol><li value=0>a<li value=4>b<li value=4>c</ol>
+<ol><li value=2>a<li value=6>b<li value=8>c</ol>
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-lists/li-list-item-counter.html b/tests/wpt/web-platform-tests/css/css-lists/li-list-item-counter.html
new file mode 100644
index 00000000000..b9a1196cabc
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-lists/li-list-item-counter.html
@@ -0,0 +1,32 @@
+<!DOCTYPE HTML>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>CSS Lists: 'counter-increment:list-item' on LI</title>
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.org">
+  <link rel="help" href="https://drafts.csswg.org/css-lists/#propdef-counter-increment">
+  <link rel="match" href="li-list-item-counter-ref.html">
+  <style>
+html,body {
+  color:black; background-color:white; font:16px/1 monospace; padding:0; margin:0;
+}
+body { margin-left: 10em; }
+li { counter-increment: list-item 0; }
+.dec { counter-increment:list-item -1; }
+.zero { counter-increment:list-item 1 list-item -1; }
+.two { counter-increment:list-item 3 list-item -1; }
+  </style>
+</head>
+<body>
+
+<ol><li>a<li value=4>b<li>c</ol>
+<ol><li>a<li value=4 style="counter-increment:list-item 5">b<li>c</ol>
+<ol><li class=dec>a<li value=4 class=dec>b<li class=dec>c</ol>
+<ol><li class=zero>a<li value=4 class=zero>b<li class=zero>c</ol>
+<ol><li class=two>a<li value=4 class=two>b<li class=two>c</ol>
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-lists/li-value-counter-reset-001-ref.html b/tests/wpt/web-platform-tests/css/css-lists/li-value-counter-reset-001-ref.html
new file mode 100644
index 00000000000..9afb1ecfa05
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-lists/li-value-counter-reset-001-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE HTML>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>Reference:_CSS Lists: 'counter-set:list-item' trumps LI @value</title>
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.org">
+  <style>
+html,body {
+  color:black; background-color:white; font:16px/1 monospace; padding:0; margin:0;
+}
+body { margin-left: 10em; }
+  </style>
+</head>
+<body>
+
+<ol><li>a<li value=99>b</ol>
+<ol><li>a<li value=149>b</ol>
+<ol><li>a<li value=54>b</ol>
+<ol><li>a<li value=149>b</ol>
+<ol><li>a<li value=51>b</ol>
+<ol><li>a<li value=88>b</ol>
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-lists/li-value-counter-reset-001.html b/tests/wpt/web-platform-tests/css/css-lists/li-value-counter-reset-001.html
new file mode 100644
index 00000000000..0e91c3a03d6
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-lists/li-value-counter-reset-001.html
@@ -0,0 +1,30 @@
+<!DOCTYPE HTML>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>CSS Lists: 'counter-set:list-item' trumps LI @value</title>
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.org">
+  <link rel="help" href="https://drafts.csswg.org/css-lists/#propdef-counter-set">
+  <link rel="match" href="li-value-counter-reset-001-ref.html">
+  <style>
+html,body {
+  color:black; background-color:white; font:16px/1 monospace; padding:0; margin:0;
+}
+body { margin-left: 10em; }
+li.set { counter-set: list-item 99; }
+  </style>
+</head>
+<body>
+
+<ol><li>a<li value=4 class=set>b</ol>
+<ol><li>a<li value=4 class=set style="counter-increment:list-item 50">b</ol>
+<ol><li>a<li value=4 style="counter-increment:list-item 50">b</ol>
+<ol><li>a<li class=set style="counter-increment:list-item 50">b</ol>
+<ol><li>a<li style="counter-increment:list-item 50">b</ol>
+<ol><li>a<li value=4 class=set style="counter-set:list-item 88">b</ol>
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-001-ref.html b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-001-ref.html
new file mode 100644
index 00000000000..d25ecd08c85
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-001-ref.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8">
+  <title>CSS Multi-column Layout Test: Test a multi-column container on button works with a column-span:all child</title>
+  <link rel="author" title="Ting-Yu Lin" href="tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+
+  <style>
+  button {
+    width: 400px;
+  }
+  .inner {
+    column-count: 3;
+    column-rule: 6px solid;
+  }
+  h3 {
+    column-span: all;
+    outline: 1px solid blue;
+  }
+  </style>
+
+  <button>
+    <div class="inner">
+      <div>block1</div><div>block2</div>
+      <h3>spanner</h3>
+      <div>block3</div><div>block4</div>
+    </div>
+  </button>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-001.html b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-001.html
new file mode 100644
index 00000000000..14833091c8f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8">
+  <title>CSS Multi-column Layout Test: Test a multi-column container on button works with a column-span:all child</title>
+  <link rel="author" title="Ting-Yu Lin" href="tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+  <link rel="help" href="https://drafts.csswg.org/css-multicol-1/#column-span">
+  <link rel="match" href="multicol-span-all-button-001-ref.html">
+  <meta name="assert" content="This test checks the page is rendered correctly for a multi-column container on button with a column-span:all child.">
+
+  <style>
+  button {
+    column-count: 3;
+    column-rule: 6px solid;
+    width: 400px;
+  }
+  h3 {
+    column-span: all;
+    outline: 1px solid blue;
+  }
+  </style>
+
+  <button>
+    <div>block1</div><div>block2</div>
+    <h3>spanner</h3>
+    <div>block3</div><div>block4</div>
+  </button>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-002-ref.html b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-002-ref.html
new file mode 100644
index 00000000000..c9ec677335e
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-002-ref.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8">
+  <title>CSS Multi-column Layout Test: Test a overflow:hidden and position:absolute multi-column container on button works with a column-span:all child and position:absolute boxes</title>
+  <link rel="author" title="Ting-Yu Lin" href="tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+
+  <style>
+  button {
+    width: 400px;
+    padding: 1em;
+    overflow: hidden;
+    position: absolute;
+  }
+  .inner {
+    column-count: 3;
+    column-rule: 6px solid;
+  }
+  h3 {
+    column-span: all;
+    outline: 1px solid blue;
+  }
+  a {
+    position: absolute;
+    width: 1em;
+    height: 1em;
+    background-color: blue;
+  }
+  </style>
+
+  <button>
+    <div class="inner">
+      <div>block1</div><div>block2</div><a></a>
+      <h3>spanner<a></a></h3>
+      <div>block3</div><div>block4</div><a></a>
+    </div>
+  </button>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-002.html b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-002.html
new file mode 100644
index 00000000000..874cb130dee
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-002.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8">
+  <title>CSS Multi-column Layout Test: Test a overflow:hidden and position:absolute multi-column container on button works with a column-span:all child and position:absolute boxes</title>
+  <link rel="author" title="Ting-Yu Lin" href="tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+  <link rel="help" href="https://drafts.csswg.org/css-multicol-1/#column-span">
+  <link rel="match" href="multicol-span-all-button-002-ref.html">
+  <meta name="assert" content="This test checks the page is rendered correctly for a overflow:hidden and position:absolute button multi-column container with a column-span:all child and position:absolute boxes.">
+
+  <style>
+  button {
+    column-count: 3;
+    column-rule: 6px solid;
+    width: 400px;
+    padding: 1em;
+    overflow: hidden;
+    position: absolute;
+  }
+  h3 {
+    column-span: all;
+    outline: 1px solid blue;
+  }
+  a {
+    position: absolute;
+    width: 1em;
+    height: 1em;
+    background-color: blue;
+  }
+  </style>
+
+  <button>
+    <div>block1</div><div>block2</div><a></a>
+    <h3>spanner<a></a></h3>
+    <div>block3</div><div>block4</div><a></a>
+  </button>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-003-ref.html b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-003-ref.html
new file mode 100644
index 00000000000..337f9c763aa
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-003-ref.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8">
+  <title>CSS Multi-column Layout Test: Test a overflow:hidden and position:absolute multi-column container on button works with a column-span:all child and position:fixed boxes</title>
+  <link rel="author" title="Ting-Yu Lin" href="tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+
+  <style>
+  button {
+    width: 400px;
+    padding: 1em;
+    overflow: hidden;
+    position: absolute;
+  }
+  .inner {
+    column-count: 3;
+    column-rule: 6px solid;
+  }
+  h3 {
+    column-span: all;
+    outline: 1px solid blue;
+  }
+  a {
+    position: fixed;
+    width: 1em;
+    height: 1em;
+    background-color: blue;
+  }
+  </style>
+
+  <button>
+    <div class="inner">
+      <div>block1</div><div>block2</div><a></a>
+      <h3>spanner<a></a></h3>
+      <div>block3</div><div>block4</div><a></a>
+    </div>
+  </button>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-003.html b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-003.html
new file mode 100644
index 00000000000..fc15c94a306
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-multicol/multicol-span-all-button-003.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8">
+  <title>CSS Multi-column Layout Test: Test a overflow:hidden and position:absolute multi-column container on button works with a column-span:all child and position:fixed boxes</title>
+  <link rel="author" title="Ting-Yu Lin" href="tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+  <link rel="help" href="https://drafts.csswg.org/css-multicol-1/#column-span">
+  <link rel="match" href="multicol-span-all-button-003-ref.html">
+  <meta name="assert" content="This test checks the page is rendered correctly for a overflow:hidden and position:absolute button multi-column container with a column-span:all child and position:absolute boxes.">
+
+  <style>
+  button {
+    column-count: 3;
+    column-rule: 6px solid;
+    width: 400px;
+    padding: 1em;
+    overflow: hidden;
+    position: absolute;
+  }
+  h3 {
+    column-span: all;
+    outline: 1px solid blue;
+  }
+  a {
+    position: fixed;
+    width: 1em;
+    height: 1em;
+    background-color: blue;
+  }
+  </style>
+
+  <button>
+    <div>block1</div><div>block2</div><a></a>
+    <h3>spanner<a></a></h3>
+    <div>block3</div><div>block4</div><a></a>
+  </button>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-scroll-snap/overflowing-snap-areas.html b/tests/wpt/web-platform-tests/css/css-scroll-snap/overflowing-snap-areas.html
index 8f6698d0206..ee31847fddd 100644
--- a/tests/wpt/web-platform-tests/css/css-scroll-snap/overflowing-snap-areas.html
+++ b/tests/wpt/web-platform-tests/css/css-scroll-snap/overflowing-snap-areas.html
@@ -63,6 +63,7 @@ div {
     <div class="target small" style="top: 200px"></div>
     <div class="target small" style="top: 600px"></div>
     <div class="target small" style="top: 1200px"></div>
+    <div class="target large-y" style="top: 2000px"></div>
   </div>
 </div>
 
@@ -143,6 +144,20 @@ test(() => {
 }, "Snap to current scroll position which is a valid snap position, as the " +
    "snap area covers snapport on y and there is no subsequent snap positions.");
 
+test(() => {
+  const maxScrollTop = scroller_y.scrollHeight - scroller_y.clientHeight;
+
+  // Scroll to the bottom edge which is a valid snap position that a large
+  // target element covers the snapport.
+  scroller_y.scrollTo(0, maxScrollTop);
+  assert_equals(scroller_y.scrollTop, maxScrollTop);
+
+  // Scroll to `the bottom edge + 1`.
+  scroller_y.scrollTo(0, maxScrollTop + 1);
+  assert_equals(scroller_y.scrollTop, maxScrollTop);
+}, "Don't snap back even if scrollTo tries to scroll to positions which are " +
+   "outside of the scroll range and if a snap target element covers the snaport");
+
 test(() => {
   two_axes_scroller.scrollTo(10, 100);
   assert_equals(two_axes_scroller.scrollLeft, 10);
diff --git a/tests/wpt/web-platform-tests/fetch/api/request/request-keepalive.html b/tests/wpt/web-platform-tests/fetch/api/request/request-keepalive.html
index c9e1a6acdd3..602fabc4db3 100644
--- a/tests/wpt/web-platform-tests/fetch/api/request/request-keepalive.html
+++ b/tests/wpt/web-platform-tests/fetch/api/request/request-keepalive.html
@@ -21,7 +21,7 @@ test(() => {
 
 test(() => {
   const init = {method: 'POST', keepalive: true, body: new ReadableStream()};
-  assert_throws('TypeError', () => {new Request('/', init)});
+  assert_throws(new TypeError(), () => {new Request('/', init)});
 }, 'keepalive flag with stream body');
 </script>
 </body>
diff --git a/tests/wpt/web-platform-tests/interfaces/mediacapture-streams.idl b/tests/wpt/web-platform-tests/interfaces/mediacapture-streams.idl
index 0feea37802d..427aa92dd1f 100644
--- a/tests/wpt/web-platform-tests/interfaces/mediacapture-streams.idl
+++ b/tests/wpt/web-platform-tests/interfaces/mediacapture-streams.idl
@@ -38,7 +38,6 @@ interface MediaStreamTrack : EventTarget {
     MediaTrackConstraints getConstraints();
     MediaTrackSettings getSettings();
     Promise<void> applyConstraints(optional MediaTrackConstraints constraints);
-                    attribute EventHandler onoverconstrained;
 };
 
 enum MediaStreamTrackState {
@@ -149,16 +148,6 @@ dictionary MediaStreamTrackEventInit : EventInit {
     required MediaStreamTrack track;
 };
 
-[Exposed=Window,
- Constructor(DOMString type, OverconstrainedErrorEventInit eventInitDict)]
-interface OverconstrainedErrorEvent : Event {
-    readonly        attribute OverconstrainedError? error;
-};
-
-dictionary OverconstrainedErrorEventInit : EventInit {
-             OverconstrainedError? error = null;
-};
-
 partial interface Navigator {
     [SameObject, SecureContext]
     readonly        attribute MediaDevices mediaDevices;
diff --git a/tests/wpt/web-platform-tests/interfaces/user-timing.idl b/tests/wpt/web-platform-tests/interfaces/user-timing.idl
index cd2e1446b89..13ad7f8730d 100644
--- a/tests/wpt/web-platform-tests/interfaces/user-timing.idl
+++ b/tests/wpt/web-platform-tests/interfaces/user-timing.idl
@@ -4,12 +4,12 @@
 // Source: User Timing Level 3 (https://w3c.github.io/user-timing/)
 
 dictionary PerformanceMarkOptions {
-    any detail = null;
+    any detail;
     DOMHighResTimeStamp startTime;
 };
 
 dictionary PerformanceMeasureOptions {
-    any detail = null;
+    any detail;
     (DOMString or DOMHighResTimeStamp) start;
     DOMHighResTimeStamp duration;
     (DOMString or DOMHighResTimeStamp) end;
@@ -18,7 +18,7 @@ dictionary PerformanceMeasureOptions {
 partial interface Performance {
     PerformanceMark mark(DOMString markName, optional PerformanceMarkOptions markOptions);
     void clearMarks(optional DOMString markName);
-    PerformanceMeasure measure(DOMString measureName, optional (DOMString or PerformanceMeasureOptions)? startOrMeasureOptions, optional DOMString endMark);
+    PerformanceMeasure measure(DOMString measureName, optional (DOMString or PerformanceMeasureOptions) startOrMeasureOptions, optional DOMString endMark);
     void clearMeasures(optional DOMString measureName);
 };
 
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