Sync WPT with upstream (04-05-2025) (#36829)

Automated downstream sync of changes from upstream as of 04-05-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>

tests/wpt/meta/FileAPI/url/url-in-tags-revoke.window.js.ini

@@ -14,6 +14,3 @@
 
   [Opening a blob URL in a new window by clicking an <a> tag works immediately before revoking the URL.]
     expected: TIMEOUT
-
-  [Fetching a blob URL immediately before revoking it works in <script> tags.]
-    expected: TIMEOUT

tests/wpt/meta/FileAPI/url/url-with-fetch.any.js.ini

@@ -12,6 +12,3 @@
 
   [Revoke blob URL after creating Request, then clone Request, will fetch]
     expected: FAIL
-
-  [Revoke blob URL after calling fetch, fetch should succeed]
-    expected: FAIL

tests/wpt/meta/css/css-gaps/multicol/multicol-gap-decorations-015.html.ini

@@ -0,0 +1,2 @@
+[multicol-gap-decorations-015.html]
+  expected: FAIL

tests/wpt/meta/css/css-gaps/multicol/multicol-gap-decorations-016.html.ini

@@ -0,0 +1,2 @@
+[multicol-gap-decorations-016.html]
+  expected: FAIL

tests/wpt/meta/css/css-grid/subgrid/line-names-015.html.ini

@@ -0,0 +1,2 @@
+[line-names-015.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-auto-025.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-auto-025.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-001.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-001.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-001.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-001.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-002.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-002.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-002.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-002.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-003.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-003.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-003.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-003.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-004.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-004.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-004.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-004.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-005.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-005.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-005.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-005.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-006.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-006.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-006.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-006.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-007.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-007.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-007.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-007.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-008.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-008.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-008.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-008.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-009.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-009.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-009.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-009.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-010.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-010.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-010.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-010.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-011.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-011.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-011.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-011.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-012.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-012.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-012.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-012.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-013.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-013.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-013.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-013.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-014.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-014.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-014.tentative.html.ini

@@ -1,2 +0,0 @@
-[line-clamp-with-abspos-014.tentative.html]
-  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-015.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-015.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-016.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-016.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-017.tentative.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-017.tentative.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-018.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-018.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-019.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-019.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-020.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-020.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-021.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-021.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-abspos-022.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-abspos-022.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-001.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-001.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-002.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-002.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-003.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-003.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-004.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-004.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-005.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-005.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-006.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-006.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-007.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-007.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-008.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-008.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-009.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-009.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-010.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-010.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-011.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-011.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-012.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-012.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-013.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-013.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-014.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-014.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-015.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-015.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-016.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-016.html]
+  expected: FAIL

tests/wpt/meta/css/css-overflow/line-clamp/line-clamp-with-fixed-pos-017.html.ini

@@ -0,0 +1,2 @@
+[line-clamp-with-fixed-pos-017.html]
+  expected: FAIL

tests/wpt/meta/css/css-sizing/dynamic-available-size-iframe.html.ini

@@ -1,2 +0,0 @@
-[dynamic-available-size-iframe.html]
-  expected: FAIL

tests/wpt/meta/css/css-transforms/parsing/transform-valid.html.ini

@@ -0,0 +1,30 @@
+[transform-valid.html]
+  [e.style['transform'\] = "scaleX(7)" should set the property value]
+    expected: FAIL
+
+  [e.style['transform'\] = "scaleX(720%)" should set the property value]
+    expected: FAIL
+
+  [e.style['transform'\] = "scaleY(-8)" should set the property value]
+    expected: FAIL
+
+  [e.style['transform'\] = "scaleY(-85%)" should set the property value]
+    expected: FAIL
+
+  [e.style['transform'\] = "scaleZ(4)" should set the property value]
+    expected: FAIL
+
+  [e.style['transform'\] = "scaleZ(25%)" should set the property value]
+    expected: FAIL
+
+  [e.style['transform'\] = "skewX(0)" should set the property value]
+    expected: FAIL
+
+  [e.style['transform'\] = "skewX(90deg)" should set the property value]
+    expected: FAIL
+
+  [e.style['transform'\] = "skewY(0)" should set the property value]
+    expected: FAIL
+
+  [e.style['transform'\] = "skewY(-90deg)" should set the property value]
+    expected: FAIL

tests/wpt/meta/css/css-values/tree-counting/calc-sibling-function-in-shadow-dom.html.ini

@@ -1,3 +1,6 @@
 [calc-sibling-function-in-shadow-dom.html]
   [Host children have sibling-index() and sibling-count() based on assignedNodes order]
     expected: FAIL
+
+  [Host children have sibling-index() and sibling-count() based on the DOM tree order]
+    expected: FAIL

tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/008.html.ini

@@ -0,0 +1,3 @@
+[008.html]
+  [Link with onclick form submit to javascript url and href navigation ]
+    expected: FAIL

tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-nosrc.html.ini

@@ -4,3 +4,6 @@
 
   [form submission]
     expected: FAIL
+
+  [link click]
+    expected: FAIL

tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js.ini

@@ -0,0 +1,3 @@
+[navigation-unload-same-origin.window.html]
+  [Same-origin navigation started from unload handler must be ignored]
+    expected: FAIL

tests/wpt/meta/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini

@@ -0,0 +1,3 @@
+[traverse_the_history_3.html]
+  [Multiple history traversals, last would be aborted]
+    expected: FAIL

tests/wpt/meta/html/canvas/element/manual/imagebitmap/createImageBitmap-invalid-args.html.ini

@@ -1,5 +1,5 @@
 [createImageBitmap-invalid-args.html]
-  expected: ERROR
+  expected: TIMEOUT
   [createImageBitmap with a vector HTMLImageElement source and sw set to 0]
     expected: FAIL
 

tests/wpt/meta/html/canvas/element/manual/imagebitmap/createImageBitmap-transfer.html.ini

@@ -1,5 +1,5 @@
 [createImageBitmap-transfer.html]
-  expected: ERROR
+  expected: TIMEOUT
   [Transfer ImageBitmap created from a vector HTMLImageElement]
     expected: FAIL
 

tests/wpt/meta/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini

@@ -1,4 +1,3 @@
 [document-base-url-window-initiator-is-not-opener.https.window.html]
-  expected: TIMEOUT
   [window.open() gets base url from initiator not opener.]
     expected: [FAIL, PASS, TIMEOUT]

tests/wpt/meta/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini

@@ -1,15 +1,16 @@
 [supported-elements.html]
+  expected: TIMEOUT
   [Contenteditable element should support autofocus]
     expected: FAIL
 
   [Host element with delegatesFocus including no focusable descendants should be skipped]
-    expected: FAIL
+    expected: NOTRUN
 
   [Element with tabindex should support autofocus]
     expected: FAIL
 
   [Area element should support autofocus]
-    expected: FAIL
+    expected: NOTRUN
 
   [Host element with delegatesFocus should support autofocus]
-    expected: FAIL
+    expected: NOTRUN

tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini

@@ -1,4 +1,3 @@
 [iframe_sandbox_popups_escaping-3.html]
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: TIMEOUT
+    expected: FAIL

tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini

@@ -1,4 +1,4 @@
 [iframe_sandbox_popups_nonescaping-2.html]
   expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN

tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini

@@ -1,3 +1,4 @@
 [iframe_sandbox_popups_nonescaping-3.html]
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: NOTRUN

tests/wpt/meta/html/semantics/forms/form-submission-0/text-plain.window.js.ini

@@ -167,9 +167,6 @@
   [text/plain: \\n in name (normal form)]
     expected: FAIL
 
-  [text/plain: 0x00 in name (normal form)]
-    expected: FAIL
-
   [text/plain: double quote in value (normal form)]
     expected: FAIL
 

tests/wpt/meta/html/semantics/forms/the-select-element/customizable-select/select-parsing.tentative.html.ini

@@ -43,3 +43,6 @@
 
   [textarea tags should parse inside select instead of closing the select]
     expected: FAIL
+
+  [Input tags should parse inside select if nested in another tag]
+    expected: FAIL

tests/wpt/meta/html/semantics/scripting-1/the-script-element/module/dynamic-import/blob-url.any.js.ini

@@ -5,6 +5,9 @@
   [Different blob URLs pointing to the same blob resolve to different modules]
     expected: FAIL
 
+  [Revoking a blob URL immediately after calling import will not fail]
+    expected: FAIL
+
 
 [blob-url.any.worker-module.html]
   expected: TIMEOUT
@@ -15,6 +18,3 @@
 [blob-url.any.html]
   [Different blob URLs pointing to the same blob resolve to different modules]
     expected: FAIL
-
-  [Revoking a blob URL immediately after calling import will not fail]
-    expected: FAIL

tests/wpt/meta/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini

@@ -772,3 +772,15 @@
 
   [X SNR (-349.0959218623025 dB) is not greater than or equal to 65.737. Got -349.0959218623025.]
     expected: FAIL
+
+  [X Stitched sine-wave buffers at sample rate 43800 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.0038986,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[14650\]\t-2.9403580000000000e+7\t8.6956524848937988e-1\t2.9403580869565248e+7\t3.3814116790712982e+7\t3.8985999999999999e-3\n\t[14651\]\t3.0547976493835449e-1\t8.9879405498504639e-1\t5.9331429004669189e-1\t6.6012262403823208e-1\t3.8985999999999999e-3\n\tMax AbsError of 2.9403580869565248e+7 at index of 14650.\n\tMax RelError of 3.3814116790712982e+7 at index of 14650.\n]
+    expected: FAIL
+
+  [X SNR (-105.93391852623517 dB) is not greater than or equal to 65.737. Got -105.93391852623517.]
+    expected: FAIL
+
+  [X Stitched sine-wave buffers at sample rate 43800 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.0038986,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[14650\]\t-2.5247278509648089e-39\t8.6956524848937988e-1\t8.6956524848937988e-1\t1.0000000000000000e+0\t3.8985999999999999e-3\n\t[14651\]\t3.0547976493835449e-1\t8.9879405498504639e-1\t5.9331429004669189e-1\t6.6012262403823208e-1\t3.8985999999999999e-3\n\tMax AbsError of 8.6956524848937988e-1 at index of 14650.\n\tMax RelError of 1.0000000000000000e+0 at index of 14650.\n]
+    expected: FAIL
+
+  [X SNR (42.96525288004425 dB) is not greater than or equal to 65.737. Got 42.96525288004425.]
+    expected: FAIL

tests/wpt/tests/ai/language_detection/detector-iframe.https.html

@@ -1,4 +1,7 @@
 <!DOCTYPE html>
+<meta name="timeout" content="long">
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/common/get-host-info.sub.js"></script>
@@ -10,11 +13,21 @@ const { HTTPS_ORIGIN, HTTPS_NOTSAMESITE_ORIGIN } = get_host_info();
 const PATH = location.pathname.substring(0, location.pathname.lastIndexOf('/') + 1);
 const IFRAME_PATH = PATH + 'resources/iframe-helper.html';
 
+const getId = (() => {
+  let idCount = 0;
+  return () => idCount++;
+})();
+
 function run_iframe_test(iframe, test_name) {
-  iframe.contentWindow.postMessage({type: test_name}, '*');
+  const id = getId();
+  iframe.contentWindow.postMessage({id, type: test_name}, '*');
   const {promise, resolve, reject} = Promise.withResolvers();
 
   window.onmessage = message => {
+    if (message.data.id !== id){
+      return;
+    }
+
     if (message.data.success) {
       resolve(message.data.success);
     } else {
@@ -27,19 +40,18 @@ function run_iframe_test(iframe, test_name) {
 
 function load_iframe(src, permission_policy) {
   let iframe = document.createElement('iframe');
-  return new Promise((resolve, reject) => {
-    iframe.onload = () => {
-      resolve(iframe);
-    }
-    iframe.src = src;
-    iframe.allow = permission_policy;
-    document.body.appendChild(iframe);
-  });
+  const {promise, resolve} = Promise.withResolvers();
+
+  iframe.onload = () => {
+    resolve(iframe);
+  }
+  iframe.src = src;
+  iframe.allow = permission_policy;
+  document.body.appendChild(iframe);
+
+  return promise;
 }
 
-// TODO(crbug.com/414428433): Tests in this file intermittently crash.
-// Re-enable once potential causes in Permissions Policy implementation
-// and test setup are addressed.
 promise_test(async t => {
   const src = HTTPS_NOTSAMESITE_ORIGIN + IFRAME_PATH;
   const iframe = await load_iframe(src, /*permission_policy=*/"");
@@ -49,7 +61,7 @@ promise_test(async t => {
 
 promise_test(async t => {
   const src = HTTPS_NOTSAMESITE_ORIGIN + IFRAME_PATH;
-  const iframe = await load_iframe(src, "languageDetector");
+  const iframe = await load_iframe(src, "language-detector");
 
   assert_equals(
     await run_iframe_test(iframe, "LanguageDetectorCreate"), 'Success');
@@ -73,7 +85,7 @@ promise_test(async t => {
 
 promise_test(async t => {
   const src = HTTPS_NOTSAMESITE_ORIGIN + IFRAME_PATH;
-  const iframe = await load_iframe(src, "languageDetector");
+  const iframe = await load_iframe(src, "language-detector");
 
   assert_in_array(
   await run_iframe_test(iframe, "LanguageDetectorAvailability"),

tests/wpt/tests/ai/language_detection/detector.https.window.js

@@ -184,6 +184,11 @@ promise_test(async t => {
   });
 }, 'Aborting LanguageDetector.measureInputUsage().');
 
+promise_test(async () => {
+  const detector = await createLanguageDetector({expectedInputLanguages: []});
+  assert_equals(detector.expectedInputLanguages, null);
+}, 'Creating LanguageDetector with empty expectedInputLanguages array');
+
 promise_test(async () => {
   const detector = await createLanguageDetector();
   assert_equals(detector.expectedInputLanguages, null);

tests/wpt/tests/ai/language_detection/resources/iframe-helper.html

@@ -1,18 +1,28 @@
 <!DOCTYPE HTML>
 <meta charset="utf-8">
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<body></body>
 <script>
+test_driver.set_test_context(parent);
+
 window.onmessage = async message => {
-  switch (message.data.type) {
-    case 'LanguageDetectorCreate':
-      LanguageDetector.create()
-        .then(t => parent.postMessage({success: 'Success'}))
-        .catch(err => parent.postMessage({err}));
-      break;
-    case 'LanguageDetectorAvailability':
-      LanguageDetector.availability()
-        .then(t => parent.postMessage({success: availability}))
-        .catch(err => parent.postMessage({err}));
-      break;
-  };
+  const {id, type} = message.data;
+  try {
+    switch (type) {
+      case 'LanguageDetectorCreate':
+        await test_driver.bless("Create LanguageDetector", null, window);
+        await LanguageDetector.create();
+        parent.postMessage({id, success: 'Success'}, '*');
+        break;
+      case 'LanguageDetectorAvailability':
+        await test_driver.bless("Check LanguageDetector Availability", null, window);
+        const availability = await LanguageDetector.availability();
+        parent.postMessage({id, success: availability}, '*');
+        break;
+    }
+  } catch (err) {
+    parent.postMessage({id, err: err}, '*');
+  }
 };
 </script>