Auto merge of #25367 - pshaughn:ce_undefined_is, r=jdm

apply is: to Document.createElement even when name isn't registered yet

The "is" option to Document.createElement should be respected even when the name hasn't been registered yet, in which case the name gets looked up again at the time the element should be upgraded. This change does that.
I'm now seeing a few test timeouts that aren't in the metadata, but I suspect they're slowness on my local configuration and not actual breakage.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #25009 fix #24997 and fix #24998

<!-- Either: -->
- [X] There are tests for these changes OR

<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->

<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->

6 files changed, 37 insertions, 244 deletions

diff --git a/components/script/dom/create.rs b/components/script/dom/create.rs
index e992a8707dd..c45e4286992 100644
--- a/components/script/dom/create.rs
+++ b/components/script/dom/create.rs
@@ -189,14 +189,21 @@ fn create_html_element(
         }
     }
 
-    // Steps 7.1-7.2
+    // Steps 7.1-7.3
     let result = create_native_html_element(name.clone(), prefix, document, creator);
+    match is {
+        Some(is) => {
+            result.set_is(is);
+            result.set_custom_element_state(CustomElementState::Undefined);
+        },
+        None => {
+            if is_valid_custom_element_name(&*name.local) {
+                result.set_custom_element_state(CustomElementState::Undefined);
+            }
+        },
+    };
 
-    // Step 7.3
-    if is_valid_custom_element_name(&*name.local) || is.is_some() {
-        result.set_custom_element_state(CustomElementState::Undefined);
-    }
-
+    // Step 8
     result
 }
 
diff --git a/components/script/dom/customelementregistry.rs b/components/script/dom/customelementregistry.rs
index 7b4229835e2..dbeacdc7ebb 100644
--- a/components/script/dom/customelementregistry.rs
+++ b/components/script/dom/customelementregistry.rs
@@ -581,7 +581,9 @@ pub fn upgrade_element(definition: Rc<CustomElementDefinition>, element: &Elemen
         return;
     }
 
-    // Step 3
+    // Step 3 happens later to save having to undo it in an exception
+
+    // Step 4
     for attr in element.attrs().iter() {
         let local_name = attr.local_name().clone();
         let value = DOMString::from(&**attr.value());
@@ -593,7 +595,7 @@ pub fn upgrade_element(definition: Rc<CustomElementDefinition>, element: &Elemen
         );
     }
 
-    // Step 4
+    // Step 5
     if element.is_connected() {
         ScriptThread::enqueue_callback_reaction(
             element,
@@ -602,44 +604,51 @@ pub fn upgrade_element(definition: Rc<CustomElementDefinition>, element: &Elemen
         );
     }
 
-    // Step 5
+    // Step 6
     definition
         .construction_stack
         .borrow_mut()
         .push(ConstructionStackEntry::Element(DomRoot::from_ref(element)));
 
-    // Step 7
+    // Steps 7-8, successful case
     let result = run_upgrade_constructor(&definition.constructor, element);
 
+    // "regardless of whether the above steps threw an exception" step
     definition.construction_stack.borrow_mut().pop();
 
-    // Step 7 exception handling
+    // Step 8 exception handling
     if let Err(error) = result {
-        // Step 7.1
+        // Step 8.exception.1
         element.set_custom_element_state(CustomElementState::Failed);
 
-        // Step 7.2
+        // Step 8.exception.2 isn't needed since step 3 hasn't happened yet
+
+        // Step 8.exception.3
         element.clear_reaction_queue();
 
-        // Step 7.3
+        // Step 8.exception.4
         let global = GlobalScope::current().expect("No current global");
         let cx = global.get_cx();
         unsafe {
             throw_dom_exception(cx, &global, error);
             report_pending_exception(*cx, true);
         }
+
         return;
     }
 
-    // Step 8
+    // TODO Step 9: "If element is a form-associated custom element..."
+
+    // Step 10
+
     element.set_custom_element_state(CustomElementState::Custom);
 
-    // Step 9
+    // Step 3
     element.set_custom_element_definition(definition);
 }
 
 /// <https://html.spec.whatwg.org/multipage/#concept-upgrade-an-element>
-/// Steps 7.1-7.2
+/// Steps 8.1-8.3
 #[allow(unsafe_code)]
 fn run_upgrade_constructor(
     constructor: &Rc<CustomElementConstructor>,
@@ -654,10 +663,12 @@ fn run_upgrade_constructor(
     }
     rooted!(in(*cx) let mut construct_result = ptr::null_mut::<JSObject>());
     {
+        // Step 8.1 TODO when shadow DOM exists
+
         // Go into the constructor's compartment
         let _ac = JSAutoRealm::new(*cx, constructor.callback());
         let args = HandleValueArray::new();
-        // Step 7.1
+        // Step 8.2
         if unsafe {
             !Construct1(
                 *cx,
@@ -668,7 +679,7 @@ fn run_upgrade_constructor(
         } {
             return Err(Error::JSFailed);
         }
-        // Step 7.2
+        // Step 8.3
         let mut same = false;
         rooted!(in(*cx) let construct_result_val = ObjectValue(construct_result.get()));
         if unsafe {
diff --git a/tests/wpt/metadata/custom-elements/Document-createElement.html.ini b/tests/wpt/metadata/custom-elements/Document-createElement.html.ini
index 228fc09afd7..174f0d03891 100644
--- a/tests/wpt/metadata/custom-elements/Document-createElement.html.ini
+++ b/tests/wpt/metadata/custom-elements/Document-createElement.html.ini
@@ -1,7 +1,4 @@
 [Document-createElement.html]
-  [document.createElement with unknown "is" value should create "undefined" state element]
-    expected: FAIL
-
   [document.createElement must create an instance of autonomous custom elements when it has is attribute]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/custom-elements/builtin-coverage.html.ini b/tests/wpt/metadata/custom-elements/builtin-coverage.html.ini
index 92de0b6d054..196dd3decbd 100644
--- a/tests/wpt/metadata/custom-elements/builtin-coverage.html.ini
+++ b/tests/wpt/metadata/custom-elements/builtin-coverage.html.ini
@@ -8,437 +8,221 @@
 
   [a: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [a: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [abbr: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [abbr: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [address: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [address: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [area: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [area: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [article: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [article: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [aside: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [aside: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [audio: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [audio: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [b: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [b: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [base: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [base: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [bdi: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [bdi: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [bdo: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [bdo: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [blockquote: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [blockquote: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [body: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [body: document parser should instantiate a customized built-in element]
-    expected: FAIL
   [br: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [br: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [button: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [button: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [canvas: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [canvas: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [caption: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [caption: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [cite: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [cite: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [code: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [code: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [col: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [col: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [colgroup: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [colgroup: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [data: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [data: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [datalist: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [datalist: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [dd: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [dd: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [del: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [del: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [details: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [details: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [dfn: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [dfn: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [dialog: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [dialog: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [div: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [div: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [dl: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [dl: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [dt: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [dt: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [em: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [em: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [embed: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [embed: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [fieldset: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [fieldset: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [figcaption: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [figcaption: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [figure: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [figure: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [footer: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [footer: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [form: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [form: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [h1: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [h1: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [h2: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [h2: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [h3: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [h3: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [h4: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [h4: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [h5: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [h5: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [h6: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [h6: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [header: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [header: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [hgroup: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [hgroup: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [hr: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [hr: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [html: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [html: document parser should instantiate a customized built-in element]
-    expected: FAIL
   [i: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [i: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [iframe: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [iframe: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [img: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [img: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [input: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [input: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [ins: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [ins: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [kbd: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [kbd: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [label: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [label: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [legend: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [legend: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [li: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [li: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [link: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [link: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [main: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [main: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [map: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [map: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [mark: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [mark: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [menu: Define a customized built-in element]
     expected: FAIL
   [meta: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [meta: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [meter: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [meter: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [nav: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [nav: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [noscript: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [noscript: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [object: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [object: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [ol: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [ol: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [optgroup: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [optgroup: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [option: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [option: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [output: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [output: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [p: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [p: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [param: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [param: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [picture: Define a customized built-in element]
     expected: FAIL
   [pre: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [pre: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [progress: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [progress: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [q: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [q: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [rp: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [rp: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [rt: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [rt: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [ruby: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [ruby: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [s: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [s: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [samp: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [samp: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [script: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [script: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [section: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [section: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [select: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [select: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [small: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [small: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [source: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [source: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [span: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [span: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [strong: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [strong: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [style: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [style: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [sub: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [sub: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [summary: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [summary: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [sup: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [sup: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [table: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [table: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [tbody: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [tbody: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [td: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [td: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [template: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [template: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [textarea: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [textarea: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [tfoot: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [tfoot: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [th: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [th: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [thead: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [thead: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [time: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [time: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [title: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [title: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [tr: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [tr: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [track: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [track: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [u: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [u: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [ul: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [ul: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [var: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [var: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [video: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [video: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
   [wbr: Operator 'new' should instantiate a customized built-in element]
     expected: FAIL
-  [wbr: innerHTML should instantiate a customized built-in element]
-    expected: FAIL
diff --git a/tests/wpt/metadata/custom-elements/upgrading/Document-importNode.html.ini b/tests/wpt/metadata/custom-elements/upgrading/Document-importNode.html.ini
index 589b0d6ff32..e7c91ebb270 100644
--- a/tests/wpt/metadata/custom-elements/upgrading/Document-importNode.html.ini
+++ b/tests/wpt/metadata/custom-elements/upgrading/Document-importNode.html.ini
@@ -1,7 +1,4 @@
 [Document-importNode.html]
-  [built-in: document.importNode() should import "undefined" custom elements successfully]
-    expected: FAIL
-
   [Document-importNode]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/custom-elements/upgrading/Node-cloneNode.html.ini b/tests/wpt/metadata/custom-elements/upgrading/Node-cloneNode.html.ini
deleted file mode 100644
index 503570bcb71..00000000000
--- a/tests/wpt/metadata/custom-elements/upgrading/Node-cloneNode.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[Node-cloneNode.html]
-  [Node.prototype.cloneNode(false) must be able to clone as a customized built-in element when it has an inconsistent "is" attribute]
-    expected: FAIL