HTML parser: remove support for layer and nolayer

https://bugs.webkit.org/show_bug.cgi?id=254915
rdar://107554605

Reviewed by Alexey Proskuryakov.

Matches the HTML Standard and Firefox.

* LayoutTests/fast/dom/wrapper-classes-expected.txt:
* LayoutTests/fast/dom/wrapper-classes.html:
* LayoutTests/imported/w3c/web-platform-tests/html/dom/elements/elements-in-the-dom/unknown-element-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/html/dom/elements/elements-in-the-dom/unknown-element.html:
* LayoutTests/imported/w3c/web-platform-tests/html/dom/historical-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/html/dom/historical.html:

Upstreamed via web-platform-tests/wpt#39332.

* Source/WebCore/html/HTMLTagNames.in:

Canonical link: https://commits.webkit.org/262553@main

LayoutTests/fast/dom/wrapper-classes-expected.txt

@@ -317,9 +317,6 @@ PASS tagJSWrapperConstructorClass('keygen') is 'Function'
 PASS tagJSWrapperClass('label') is 'HTMLLabelElement'
 PASS tagJSWrapperPrototypeClass('label') is 'HTMLLabelElement'
 PASS tagJSWrapperConstructorClass('label') is 'Function'
-PASS tagJSWrapperClass('layer') is 'HTMLElement'
-PASS tagJSWrapperPrototypeClass('layer') is 'HTMLElement'
-PASS tagJSWrapperConstructorClass('layer') is 'Function'
 PASS tagJSWrapperClass('legend') is 'HTMLLegendElement'
 PASS tagJSWrapperPrototypeClass('legend') is 'HTMLLegendElement'
 PASS tagJSWrapperConstructorClass('legend') is 'Function'
@@ -359,9 +356,6 @@ PASS tagJSWrapperConstructorClass('noembed') is 'Function'
 PASS tagJSWrapperClass('noframes') is 'HTMLElement'
 PASS tagJSWrapperPrototypeClass('noframes') is 'HTMLElement'
 PASS tagJSWrapperConstructorClass('noframes') is 'Function'
-PASS tagJSWrapperClass('nolayer') is 'HTMLElement'
-PASS tagJSWrapperPrototypeClass('nolayer') is 'HTMLElement'
-PASS tagJSWrapperConstructorClass('nolayer') is 'Function'
 PASS tagJSWrapperClass('noscript') is 'HTMLElement'
 PASS tagJSWrapperPrototypeClass('noscript') is 'HTMLElement'
 PASS tagJSWrapperConstructorClass('noscript') is 'Function'

LayoutTests/fast/dom/wrapper-classes.html

@@ -196,7 +196,6 @@
     testTag("kbd", "HTMLElement");
     testTag("keygen", "HTMLUnknownElement");
     testTag("label", "HTMLLabelElement");
-    testTag("layer", "HTMLElement");
     testTag("legend", "HTMLLegendElement");
     testTag("li", "HTMLLIElement");
     testTag("link", "HTMLLinkElement");
@@ -210,7 +209,6 @@
     testTag("nobr", "HTMLElement");
     testTag("noembed", "HTMLElement");
     testTag("noframes", "HTMLElement");
-    testTag("nolayer", "HTMLElement");
     testTag("noscript", "HTMLElement");
     testTag("object", "HTMLObjectElement");
     testTag("ol", "HTMLOListElement");

LayoutTests/imported/w3c/web-platform-tests/html/dom/elements/elements-in-the-dom/unknown-element-expected.txt

@@ -1,3 +1,7 @@
 
-PASS HTMLUnknownElement
+PASS <applet> is an HTMLUnknownElement
+PASS <attachment> is an HTMLUnknownElement
+PASS <layer> is an HTMLUnknownElement
+PASS <nolayer> is an HTMLUnknownElement
+PASS <xxx> is an HTMLUnknownElement
 

LayoutTests/imported/w3c/web-platform-tests/html/dom/elements/elements-in-the-dom/unknown-element.html

@@ -6,11 +6,17 @@
 <script src="/resources/testharnessreport.js"></script>
 <div id="log"></div>
 <script>
-test(function() {
-  var elt = document.createElement("xxx");
-  assert_true(window.HTMLUnknownElement && elt instanceof HTMLUnknownElement,
-              "not an instance of HTMLUnknownElement");
-  assert_true(window.HTMLSpanElement && !(elt instanceof HTMLSpanElement),
-              "an instance of HTMLSpanElement");
+[
+  "applet",
+  "attachment",
+  "layer",
+  "nolayer",
+  "xxx"
+].forEach(name => {
+  test(() => {
+    const elt = document.createElement("xxx");
+    assert_true(window.HTMLUnknownElement && elt instanceof HTMLUnknownElement, "not an instance of HTMLUnknownElement");
+    assert_true(window.HTMLSpanElement && !(elt instanceof HTMLSpanElement), "an instance of HTMLSpanElement");
+  }, `<${name}> is an HTMLUnknownElement`);
 });
 </script>

LayoutTests/imported/w3c/web-platform-tests/html/dom/historical-expected.txt

@@ -1,5 +1,9 @@
 
 PASS document.applets is always empty
+PASS <attachment> is HTMLUnknownElement
+PASS <applet> is HTMLUnknownElement
+PASS <layer> is HTMLUnknownElement
+PASS <nolayer> is HTMLUnknownElement
 PASS HTMLAppletElement is no more
 PASS document.all cannot find applet
 PASS document cannot find applet

LayoutTests/imported/w3c/web-platform-tests/html/dom/historical.html

@@ -3,16 +3,29 @@
 <script src=/resources/testharness.js></script>
 <script src=/resources/testharnessreport.js></script>
 <div id=log></div>
+<attachment></attachment>
 <applet name=war align=left></applet>
+<layer></layer>
+<nolayer></nolayer>
 <script>
 test(() => {
   assert_array_equals(document.applets, []);
 }, "document.applets is always empty");
 
+[
+  "attachment",
+  "applet",
+  "layer",
+  "nolayer"
+].forEach(name => {
+  test(() => {
+    const ap = document.getElementsByTagName(name)[0];
+    assert_true(ap instanceof window.HTMLUnknownElement);
+  }, `<${name}> is HTMLUnknownElement`);
+});
+
 test(() => {
-  const ap = document.getElementsByTagName("applet")[0];
   assert_equals(self.HTMLAppletElement, undefined);
-  assert_true(ap instanceof window.HTMLUnknownElement);
 }, "HTMLAppletElement is no more")
 
 test(() => {

Source/WebCore/html/HTMLTagNames.in

@@ -73,7 +73,6 @@ ins interfaceName=HTMLModElement
 kbd interfaceName=HTMLElement
 keygen interfaceName=HTMLUnknownElement
 label
-layer interfaceName=HTMLElement
 legend
 li interfaceName=HTMLLIElement
 link constructorNeedsCreatedByParser
@@ -91,7 +90,6 @@ nav interfaceName=HTMLElement
 nobr interfaceName=HTMLElement
 noembed interfaceName=HTMLElement
 noframes interfaceName=HTMLElement
-nolayer interfaceName=HTMLElement
 object constructorNeedsFormElement
 ol interfaceName=HTMLOListElement
 optgroup interfaceName=HTMLOptGroupElement