Import wpt@beca8464a59440d44a41edbba1989e8d6dc2a38e

Using wpt-import in Chromium 61886adc. With Chromium commits locally applied on WPT: 03ccd4e9 "html: Move autofocus tests to html/interaction/focus/the-autofocus-attribute/" c19433ef "Reland "[ChromeDriver] Stop using --ignore-certificate-errors"" afc509ca "[WPT/common/security-features] Fix typo" df884b61 "[WPT/referrer-policy] Add worker subresource tests" Note to sheriffs: This CL imports external tests and adds expectations for those tests; if this CL is large and causes a few new failures, please fix the failures by adding new lines to TestExpectations rather than reverting. See: https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md Directory owners for changes in this CL: cbiesinger@chromium.org: external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox foolip@chromium.org, lpz@chromium.org, robertma@chromium.org: external/wpt/tools jsbell@chromium.org: external/wpt/encoding NOAUTOREVERT=true TBR=foolip No-Export: true Change-Id: I82487518a93b5804cdfbc23a1f61ba3e1d0a8b02 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1836773Reviewed-by: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com> Commit-Queue: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com> Cr-Commit-Position: refs/heads/master@{#702355}

Import wpt@beca8464a59440d44a41edbba1989e8d6dc2a38e
Using wpt-import in Chromium 61886adc. With Chromium commits locally applied on WPT: 03ccd4e9 "html: Move autofocus tests to html/interaction/focus/the-autofocus-attribute/" c19433ef "Reland "[ChromeDriver] Stop using --ignore-certificate-errors"" afc509ca "[WPT/common/security-features] Fix typo" df884b61 "[WPT/referrer-policy] Add worker subresource tests" Note to sheriffs: This CL imports external tests and adds expectations for those tests; if this CL is large and causes a few new failures, please fix the failures by adding new lines to TestExpectations rather than reverting. See: https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md Directory owners for changes in this CL: cbiesinger@chromium.org: external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox foolip@chromium.org, lpz@chromium.org, robertma@chromium.org: external/wpt/tools jsbell@chromium.org: external/wpt/encoding NOAUTOREVERT=true TBR=foolip No-Export: true Change-Id: I82487518a93b5804cdfbc23a1f61ba3e1d0a8b02 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1836773Reviewed-by: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com> Commit-Queue: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com> Cr-Commit-Position: refs/heads/master@{#702355}
e60ff72c · Chromium WPT Sync · Commit Bot · 0b26f34d · e60ff72c · e60ff72c
Commit e60ff72c authored Oct 03, 2019 by Chromium WPT Sync Committed by Commit Bot Oct 03, 2019
23 changed files
--- a/third_party/blink/web_tests/TestExpectations
+++ b/third_party/blink/web_tests/TestExpectations
@@ -3189,6 +3189,9 @@ crbug.com/1002514 external/wpt/web-share/share-sharePromise-internal-slot.https.
 crbug.com/618969 external/wpt/css/css-grid/subgrid/ [ Skip ]
 # ====== New tests from wpt-importer added here ======
+crbug.com/626703 [ Linux ] external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-align-self-baseline-horiz-008.xhtml [ Failure ]
+crbug.com/626703 [ Mac ] external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-align-self-baseline-horiz-008.xhtml [ Failure ]
+crbug.com/626703 [ Win ] external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-align-self-baseline-horiz-008.xhtml [ Failure ]
 crbug.com/626703 [ Win10 ] external/wpt/css/css-text/line-breaking/line-breaking-021.html [ Failure ]
 crbug.com/626703 [ Win7 ] external/wpt/pointerevents/pointerevent_touch-action-inherit_child-pan-x-child-pan-y_touch.html [ Timeout ]
 crbug.com/626703 [ Win7 ] external/wpt/pointerevents/pointerevent_touch-action-inherit_child-none_touch.html [ Timeout ]

--- a/third_party/blink/web_tests/external/WPT_BASE_MANIFEST_6.json
+++ b/third_party/blink/web_tests/external/WPT_BASE_MANIFEST_6.json
--- a/third_party/blink/web_tests/external/wpt/css/css-text/hyphens/hyphens-out-of-flow-001.html
+++ b/third_party/blink/web_tests/external/wpt/css/css-text/hyphens/hyphens-out-of-flow-001.html
@@ -4,7 +4,7 @@
 <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
 <link rel="help" href="https://drafts.csswg.org/css-text-3/#hyphens-property">
 <meta name="flags" content="">
-<link rel="match" href="reference/hyphens-span-001-ref.html">
+<link rel="match" href="reference/hyphens-out-of-flow-001-ref.html">
 <meta name="assert" content="the presence of an out of flow element has no effect on manual hyhenation">
 <style>
 span {

--- a/third_party/blink/web_tests/external/wpt/css/css-text/hyphens/reference/hyphens-out-of-flow-001-ref.html
+++ b/third_party/blink/web_tests/external/wpt/css/css-text/hyphens/reference/hyphens-out-of-flow-001-ref.html
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text Test reference</title>
+<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
+<style>
+div {
+  border: solid orange;
+  margin: 5px;
+  width: 6ch;
+  hyphens: manual;
+}
+</style>
+<p>Test passes if the text in all orange boxes below is identical (including the presence and position of a hyphen).
+<div>high&shy;way</div>
+<div>high&shy;way</div>
+<div>high&shy;way</div>
+<div>high&shy;way</div>
+<div>high&shy;way</div>
+<div>high&shy;way</div>
+<div>high&shy;way</div>
--- a/third_party/blink/web_tests/external/wpt/css/css-text/hyphens/reference/hyphens-span-001-ref.html
+++ b/third_party/blink/web_tests/external/wpt/css/css-text/hyphens/reference/hyphens-span-001-ref.html
@@ -20,3 +20,5 @@ div {
 <div>high&shy;way</div>
 <div>high&shy;way</div>
 <div>high&shy;way</div>
+<div>high&shy;way</div>
+<div>high&shy;way</div>
--- a/third_party/blink/web_tests/external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-align-self-baseline-horiz-008-ref.xhtml
+++ b/third_party/blink/web_tests/external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-align-self-baseline-horiz-008-ref.xhtml
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!-- Reference case for behavior of 'baseline' and 'last baseline' values
+     for align-items and align-self for sideways writing modes.
+-->
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <title>CSS Reftest Reference</title>
+    <link rel="author" title="Brad Werth" href="mailto:bwerth@mozilla.com"/>
+    <style>
+      .container {
+        float: left;
+        display: flex;
+        writing-mode: sideways-rl;
+        border: 1px dashed blue;
+        font: 14px sans-serif;
+        width: 80px;
+      }
+      .reverse { flex-flow: row wrap-reverse; }
+      .start  { align-self: start; }
+      .end    { align-self: end; }
+      .offset { margin-right: 10px;
+                margin-left: 3px; }
+      .lime   { background: lime;   }
+      .yellow { background: yellow; }
+      .orange { background: orange; }
+      .pink   { background: pink;   }
+      .ib     { display: inline-block; }
+    </style>
+  </head>
+  <body>
+    <div class="container">
+      <div class="lime offset start">one line (first)</div
+      ><div class="yellow offset end">one line (last)</div
+      ><div class="orange offset end">two<br/>lines and offset (last)</div
+      ><div class="pink offset start">offset (first)</div>
+    </div>
+    <div class="container reverse">
+      <div class="lime offset end">one line (first)</div
+      ><div class="offset start"><div class="yellow ib">one line (last)</div
+      ><div class="orange ib">two<br/>lines and offset (last)</div></div
+      ><div class="pink offset end">offset (first)</div>
+    </div>
+  </body>
+</html>
--- a/third_party/blink/web_tests/external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-align-self-baseline-horiz-008.xhtml
+++ b/third_party/blink/web_tests/external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-align-self-baseline-horiz-008.xhtml
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!-- Testcase for behavior of 'baseline' and 'last baseline' values
+     for align-items (and align-self, implicitly) for sideways
+     writing modes. This test confirms non-interference between the
+     'baseline' and 'last baseline' items.
+-->
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <title>CSS Test: Baseline alignment of block flex items with 'baseline' and 'last-baseline' values for 'align-self' against each other.</title>
+    <link rel="author" title="Brad Werth" href="mailto:bwerth@mozilla.com"/>
+    <link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#baseline-participation"/>
+    <link rel="match" href="flexbox-align-self-baseline-horiz-008-ref.xhtml"/>
+    <style>
+      .container {
+        float: left;
+        display: flex;
+        writing-mode: sideways-rl;
+        border: 1px dashed blue;
+        font: 14px sans-serif;
+        width: 80px;
+      }
+      .reverse { flex-flow: row wrap-reverse; }
+      .base     { align-self: baseline; }
+      .lastbase { align-self: last baseline; }
+      .offset { margin-right: 10px;
+                margin-left: 3px; }
+      .lime   { background: lime;   }
+      .yellow { background: yellow; }
+      .orange { background: orange; }
+      .pink   { background: pink;   }
+    </style>
+  </head>
+  <body>
+    <div class="container">
+      <div class="lime base">one line (first)</div>
+      <div class="yellow lastbase">one line (last)</div>
+      <div class="orange offset lastbase">two<br/>lines and offset (last)</div>
+      <div class="pink offset base">offset (first)</div>
+    </div>
+    <div class="container reverse">
+      <div class="lime base">one line (first)</div>
+      <div class="yellow lastbase">one line (last)</div>
+      <div class="orange offset lastbase">two<br/>lines and offset (last)</div>
+      <div class="pink offset base">offset (first)</div>
+    </div>
+  </body>
+</html>
--- a/third_party/blink/web_tests/external/wpt/encoding/streams/backpressure.any.js
+++ b/third_party/blink/web_tests/external/wpt/encoding/streams/backpressure.any.js
@@ -4,11 +4,11 @@
 const classes = [
  {
-    constructor: TextDecoderStream,
+    name: 'TextDecoderStream',
    input: new Uint8Array([65])
  },
  {
-    constructor: TextEncoderStream,
+    name: 'TextEncoderStream',
    input: 'A'
  }
 ];
@@ -17,7 +17,7 @@ const microtasksRun = () => new Promise(resolve => step_timeout(resolve, 0));
 for (const streamClass of classes) {
  promise_test(async () => {
-    const stream = new streamClass.constructor();
+    const stream = new self[streamClass.name]();
    const writer = stream.writable.getWriter();
    const reader = stream.readable.getReader();
    const events = [];
@@ -32,10 +32,10 @@ for (const streamClass of classes) {
    assert_array_equals(events, ['paused', 'read', 'write'],
                        'write should happen after read');
  }, 'write() should not complete until read relieves backpressure for ' +
-     `${streamClass.constructor.name}`);
+     `${streamClass.name}`);
  promise_test(async () => {
-    const stream = new streamClass.constructor();
+    const stream = new self[streamClass.name]();
    const writer = stream.writable.getWriter();
    const reader = stream.readable.getReader();
    const events = [];
@@ -56,5 +56,5 @@ for (const streamClass of classes) {
                                 'write2'],
                        'writes should not happen before read2');
  }, 'additional writes should wait for backpressure to be relieved for ' +
-     `class ${streamClass.constructor.name}`);
+     `class ${streamClass.name}`);
 }
--- a/third_party/blink/web_tests/external/wpt/interfaces/css-typed-om.idl
+++ b/third_party/blink/web_tests/external/wpt/interfaces/css-typed-om.idl
@@ -65,6 +65,8 @@ interface CSSKeywordValue : CSSStyleValue {
    attribute USVString value;
 };
+typedef (DOMString or CSSKeywordValue) CSSKeywordish;
 typedef (double or CSSNumericValue) CSSNumberish;
 enum CSSNumericBaseType {

--- a/third_party/blink/web_tests/external/wpt/interfaces/webrtc-stats.idl
+++ b/third_party/blink/web_tests/external/wpt/interfaces/webrtc-stats.idl
@@ -48,13 +48,13 @@ enum RTCCodecType {
 };
 dictionary RTCReceivedRtpStreamStats : RTCRtpStreamStats {
-             unsigned long packetsReceived;
+             unsigned long long packetsReceived;
-             long packetsLost;
+             long long packetsLost;
             double jitter;
-             unsigned long packetsDiscarded;
+             unsigned long long packetsDiscarded;
-             unsigned long packetsRepaired;
+             unsigned long long packetsRepaired;
-             unsigned long burstPacketsLost;
+             unsigned long long burstPacketsLost;
-             unsigned long burstPacketsDiscarded;
+             unsigned long long burstPacketsDiscarded;
             unsigned long burstLossCount;
             unsigned long burstDiscardCount;
             double burstLossRate;
@@ -64,6 +64,7 @@ dictionary RTCReceivedRtpStreamStats : RTCRtpStreamStats {
             unsigned long framesDropped;
             unsigned long partialFramesLost;
             unsigned long fullFramesLost;
 };
 dictionary RTCInboundRtpStreamStats : RTCReceivedRtpStreamStats {
@@ -80,12 +81,12 @@ dictionary RTCInboundRtpStreamStats : RTCReceivedRtpStreamStats {
 boolean voiceActivityFlag;
 DOMHighResTimeStamp lastPacketReceivedTimestamp;
 double averageRtcpInterval;
- unsigned long fecPacketsReceived;
+ unsigned long long fecPacketsReceived;
- unsigned long fecPacketsDiscarded;
+ unsigned long long fecPacketsDiscarded;
 unsigned long long bytesReceived;
- unsigned long packetsFailedDecryption;
+ unsigned long long packetsFailedDecryption;
- unsigned long packetsDuplicated;
+ unsigned long long packetsDuplicated;
- record<USVString, unsigned long> perDscpPacketsReceived;
+ record<USVString, unsigned long long> perDscpPacketsReceived;
 unsigned long nackCount;
 unsigned long firCount;
 unsigned long pliCount;
@@ -94,6 +95,8 @@ dictionary RTCInboundRtpStreamStats : RTCReceivedRtpStreamStats {
 double jitterBufferDelay;
 unsigned long long jitterBufferEmittedCount;
 unsigned long long totalSamplesReceived;
+ unsigned long long samplesDecodedWithSilk;
+ unsigned long long samplesDecodedWithCelt;
 unsigned long long concealedSamples;
 unsigned long long silentConcealedSamples;
 unsigned long long concealmentEvents;
@@ -125,6 +128,7 @@ dictionary RTCOutboundRtpStreamStats : RTCSentRtpStreamStats {
             DOMString mediaSourceId;
             DOMString senderId;
             DOMString remoteId;
+             DOMString rid;
             DOMHighResTimeStamp lastPacketSentTimestamp;
             unsigned long packetsDiscardedOnSend;
             unsigned long long bytesDiscardedOnSend;
@@ -143,6 +147,8 @@ dictionary RTCOutboundRtpStreamStats : RTCSentRtpStreamStats {
             unsigned long framesDiscardedOnSend;
             unsigned long long qpSum;
             unsigned long long totalSamplesSent;
+             unsigned long long samplesEncodedWithSilk;
+             unsigned long long samplesEncodedWithCelt;
             boolean voiceActivityFlag;
             double totalEncodeTime;
             double totalPacketSendDelay;
@@ -150,7 +156,7 @@ dictionary RTCOutboundRtpStreamStats : RTCSentRtpStreamStats {
             RTCQualityLimitationReason qualityLimitationReason;
             record<DOMString, double> qualityLimitationDurations;
             unsigned long qualityLimitationResolutionChanges;
-             record<USVString, unsigned long> perDscpPacketsSent;
+             record<USVString, unsigned long long> perDscpPacketsSent;
             unsigned long nackCount;
             unsigned long firCount;
             unsigned long pliCount;
@@ -257,8 +263,8 @@ dictionary RTCDataChannelStats : RTCStats {
 };
 dictionary RTCTransportStats : RTCStats {
-             unsigned long packetsSent;
+             unsigned long long packetsSent;
-             unsigned long packetsReceived;
+             unsigned long long packetsReceived;
             unsigned long long bytesSent;
             unsigned long long bytesReceived;
             DOMString rtcpTransportStatsId;
@@ -302,8 +308,8 @@ dictionary RTCIceCandidatePairStats : RTCStats {
             DOMString remoteCandidateId;
             RTCStatsIceCandidatePairState state;
             boolean nominated;
-             unsigned long packetsSent;
+             unsigned long long packetsSent;
-             unsigned long packetsReceived;
+             unsigned long long packetsReceived;
             unsigned long long bytesSent;
             unsigned long long bytesReceived;
             DOMHighResTimeStamp lastPacketSentTimestamp;
@@ -353,6 +359,12 @@ dictionary RTCIceServerStats : RTCStats {
           double totalRoundTripTime;
 };
+dictionary RTCReceiverVideoTrackAttachmentStats : RTCVideoReceiverStats {
+};
+dictionary RTCReceiverAudioTrackAttachmentStats : RTCAudioReceiverStats {
+};
 partial dictionary RTCCodecStats {
   DOMString implementation;
 };

--- a/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/fractions/frac-legacy-bevelled-attribute.tentative-ref.html
+++ b/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/fractions/frac-legacy-bevelled-attribute.tentative-ref.html
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>fractions bevelled (reference)</title>
+  </head>
+  <body>
+    <p>Test passes is you see a blue rectangle <em>above</em> a green rectangle, separated by a horizontal bar.</p>
+    <p>
+      <math>
+        <mfrac>
+          <mspace width="100px" height="30px" style="background: lightblue"></mspace>
+          <mspace width="100px" height="30px" style="background: lightgreen"></mspace>
+        </mfrac>
+      </math>
+    </p>
+  </body>
+</html>
--- a/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/fractions/frac-legacy-bevelled-attribute.tentative.html
+++ b/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/fractions/frac-legacy-bevelled-attribute.tentative.html
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>fractions bevelled</title>
+    <link rel="help" href="https://www.w3.org/TR/MathML3/chapter3.html#presm.mfrac">
+    <link rel="help" href="https://mathml-refresh.github.io/mathml-core/#fractions-mfrac">
+    <link rel="help" href="https://github.com/mathml-refresh/mathml/issues/29">
+    <meta name="assert" content="Verify that the MathML3 bevelled attribute is ignored.">
+    <link rel="match" href="frac-legacy-bevelled-attribute.tentative-ref.html">
+  </head>
+  <body>
+    <p>Test passes is you see a blue rectangle <em>above</em> a green rectangle, separated by a horizontal bar.</p>
+    <p>
+      <math>
+        <mfrac bevelled="true">
+          <mspace width="100px" height="30px" style="background: lightblue"></mspace>
+          <mspace width="100px" height="30px" style="background: lightgreen"></mspace>
+        </mfrac>
+      </math>
+    </p>
+    <script src="/mathml/support/feature-detection.js"></script>
+    <script>
+      MathMLFeatureDetection.ensure_for_match_reftest("has_mspace");
+      MathMLFeatureDetection.ensure_for_match_reftest("has_mfrac");
+    </script>
+  </body>
+</html>
--- a/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/mrow/legacy-mfenced-element-001-ref.html
+++ b/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/mrow/legacy-mfenced-element-001-ref.html
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>mfenced element</title>
+  </head>
+  <body>
+    <p>Test passes if you see 6 green squares and no red.</p>
+    <p>
+      <math>
+        <mrow>
+          <mspace width="30px" height="30px" style="background: green"></mspace>
+          <mspace width="30px" height="30px" style="background: lightgreen"></mspace>
+          <mspace width="30px" height="30px" style="background: green"></mspace>
+        </mrow>
+        <mrow>
+          <mspace width="30px" height="30px" style="background: lightgreen"></mspace>
+          <mspace width="30px" height="30px" style="background: green"></mspace>
+          <mspace width="30px" height="30px" style="background: lightgreen"></mspace>
+        </mrow>
+      </math>
+    </p>
+  </body>
+</html>
--- a/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/mrow/legacy-mfenced-element-001.html
+++ b/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/mrow/legacy-mfenced-element-001.html
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>mfenced element</title>
+    <link rel="help" href="https://www.w3.org/TR/MathML3/chapter3.html#presm.mfenced">
+    <link rel="help" href="https://mathml-refresh.github.io/mathml-core/#new-display-math-value">
+    <link rel="help" href="https://mathml-refresh.github.io/mathml-core/#mathml-elements">
+    <link rel="help" href="https://mathml-refresh.github.io/mathml-core/#horizontally-group-sub-expressions-mrow">
+    <meta name="assert" content="Verify that the mfenced element is not supported.">
+    <link rel="match" href="legacy-mfenced-element-001-ref.html">
+  </head>
+  <body>
+    <p>Test passes if you see 6 green squares and no red.</p>
+    <p>
+      <math style="color: red">
+        <mfenced>
+          <mspace width="30px" height="30px" style="background: green"></mspace>
+          <mspace width="30px" height="30px" style="background: lightgreen"></mspace>
+          <mspace width="30px" height="30px" style="background: green"></mspace>
+        </mfenced>
+        <mfenced open="{" close="]" separators="?!">
+          <mspace width="30px" height="30px" style="background: lightgreen"></mspace>
+          <mspace width="30px" height="30px" style="background: green"></mspace>
+          <mspace width="30px" height="30px" style="background: lightgreen"></mspace>
+        </mfenced>
+      </math>
+    </p>
+    <script src="/mathml/support/feature-detection.js"></script>
+    <script>
+      MathMLFeatureDetection.ensure_for_match_reftest("has_mspace");
+    </script>
+  </body>
+</html>
--- a/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/scripts/subsup-legacy-scriptshift-attributes-001.tentative-ref.html
+++ b/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/scripts/subsup-legacy-scriptshift-attributes-001.tentative-ref.html
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>msub/msup/msubsup/mmultiscripts subscriptshift and superscriptshift attributes (reference)</title>
+  </head>
+  <body>
+    <p>Test passes if the green squares are not about 300px away from the blue squares.</p>
+    <p>
+      <math>
+        <mmultiscripts>
+          <mspace width="30px" height="30px" style="background: blue;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+          <mprescripts/>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+        </mmultiscripts>
+        <msub>
+          <mspace width="30px" height="30px" style="background: blue;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+        </msub>
+        <msup>
+          <mspace width="30px" height="30px" style="background: blue;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+        </msup>
+        <msubsup>
+          <mspace width="30px" height="30px" style="background: blue;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+        </msubsup>
+      </math>
+    </p>
+  </body>
+</html>
--- a/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/scripts/subsup-legacy-scriptshift-attributes-001.tentative.html
+++ b/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/scripts/subsup-legacy-scriptshift-attributes-001.tentative.html
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>msub/msup/msubsup/mmultiscripts subscriptshift and superscriptshift attributes</title>
+    <link rel="help" href="https://www.w3.org/TR/MathML3/chapter3.html#presm.msub">
+    <link rel="help" href="https://www.w3.org/TR/MathML3/chapter3.html#presm.msup">
+    <link rel="help" href="https://www.w3.org/TR/MathML3/chapter3.html#presm.msunsup">
+    <link rel="help" href="https://www.w3.org/TR/MathML3/chapter3.html#presm.mmultiscripts">
+    <link rel="help" href="https://mathml-refresh.github.io/mathml-core/#subscripts-and-superscripts-msub-msup-msubsup">
+    <link rel="help" href="https://mathml-refresh.github.io/mathml-core/#prescripts-and-tensor-indices-mmultiscripts">
+    <link rel="match" href="subsup-legacy-scriptshift-attributes-001.tentative-ref.html">
+  </head>
+  <body>
+    <p>Test passes if the green squares are not about 300px away from the blue squares.</p>
+    <p>
+      <math>
+        <mmultiscripts subscriptshift="300px" superscriptshift="300px">
+          <mspace width="30px" height="30px" style="background: blue;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+          <mprescripts/>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+        </mmultiscripts>
+        <msub subscriptshift="300px">
+          <mspace width="30px" height="30px" style="background: blue;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+        </msub>
+        <msup superscriptshift="300px">
+          <mspace width="30px" height="30px" style="background: blue;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+        </msup>
+        <msubsup subscriptshift="300px" superscriptshift="300px">
+          <mspace width="30px" height="30px" style="background: blue;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+          <mspace width="10px" height="10px" style="background: lightgreen;"></mspace>
+        </msubsup>
+      </math>
+    </p>
+    <script src="/mathml/support/feature-detection.js"></script>
+    <script>
+      MathMLFeatureDetection.ensure_for_match_reftest("has_mspace");
+      MathMLFeatureDetection.ensure_for_match_reftest("has_msubsup");
+      MathMLFeatureDetection.ensure_for_match_reftest("has_mmultiscripts");
+    </script>
+  </body>
+</html>
--- a/third_party/blink/web_tests/external/wpt/shadow-dom/Element-interface-attachShadow-custom-element-expected.txt
+++ b/third_party/blink/web_tests/external/wpt/shadow-dom/Element-interface-attachShadow-custom-element-expected.txt
+This is a testharness.js-based test.
+PASS Element.attachShadow must create an instance of ShadowRoot for autonomous custom elements
+PASS Element.attachShadow must create an instance of ShadowRoot for undefined autonomous custom elements
+PASS Element.attachShadow for an autonomous custom element with disabledFeatures=["shadow"] should throw a NotSupportedError
+PASS Element.attachShadow for a customized built-in element with disabledFeatures=["shadow"] should throw a NotSupportedError
+FAIL Element.attachShadow for a custom element with disabledFeatures=["SHADOW"] should not throw a NotSupportedError Failed to execute 'attachShadow' on 'Element': attachShadow() is disabled by disabledFeatures static field.
+PASS Element.attachShadow must throw a NotSupportedError for customized built-in elements
+Harness: the test ran to completion.
--- a/third_party/blink/web_tests/external/wpt/shadow-dom/Element-interface-attachShadow-custom-element.html
+++ b/third_party/blink/web_tests/external/wpt/shadow-dom/Element-interface-attachShadow-custom-element.html
@@ -20,7 +20,7 @@ test(() => {
 test(() => {
  class ShadowDisabledElement extends HTMLElement {
-    static disabledFeatures = ['shadow'];
+    static get disabledFeatures() { return ['shadow']; }
  }
  // No definition. attachShadow() should succeed.
@@ -47,7 +47,7 @@ test(() => {
 test(() => {
  class ShadowDisabledHeadingElement extends HTMLHeadingElement {
-    static disabledFeatures = ['shadow'];
+    static get disabledFeatures() { return ['shadow']; }
  }
  // No definition. attachShadow() should succeed.
@@ -77,7 +77,7 @@ test(() => {
 test(() => {
  class CapitalShadowDisabledElement extends HTMLElement {
-    static disabledFeatures = ['SHADOW'];
+    static get disabledFeatures() { return ['shadow']; }
  }
  customElements.define('capital-shadow-disabled-element', CapitalShadowDisabledElement);

--- a/third_party/blink/web_tests/external/wpt/tools/ci/update_pr_preview.py
+++ b/third_party/blink/web_tests/external/wpt/tools/ci/update_pr_preview.py
-# wpt-submissions.live is a public deployment of WPT, maintained in an external
-# repository. It automatically fetches and deploys all refs in the WPT
-# repository which match a certain pattern. This behavior is intended to be
-# used for pull requests so that reviewers can preview changes without running
-# the WPT server locally.
-#
-# This script facilitates the service by maintaining the git refs. It creates
-# and updates refs in response to GitHub events. It does this automatically for
-# pull requests from GitHub users who have "collaborator" access permissions to
-# the WPT repository. It also does this for any pull requests which bear the
-# `pull-request-has-preview` label. Collaborators can add or remove this label
-# to enable or disable the preview for submissions from non-collaborators.
-#
-# Although the script relies on a secret access token, it is *not* limited to
-# use for pull requests from trusted collaborators due to the way GitHub
-# Actions are executed:
-#
-# > # Pull request events for forked repositories
-# >
-# > [...]
-# >
-# > ## Pull request with base and head branches in different repositories
-# >
-# > The base repository receives a `pull_request` event where the SHA is the
-# > latest commit of base branch and ref is the base branch.
-#
-# https://developer.github.com/actions/managing-workflows/workflow-configuration-options/#pull-request-events-for-forked-repositories
-import json
-import logging
-import os
-import sys
-import requests
-active_label = 'pull-request-has-preview'
-logging.basicConfig(level=logging.INFO)
-logger = logging.getLogger(__name__)
-class Status(object):
-    SUCCESS = 0
-    FAIL = 1
-    NEUTRAL = 0
-def request(url, method_name, data=None, json_data=None, ignore_body=False):
-    github_token = os.environ.get('GITHUB_TOKEN')
-    kwargs = {
-        'headers': {
-            'Authorization': 'token {}'.format(github_token),
-            'Accept': 'application/vnd.github.machine-man-preview+json'
-        }
-    }
-    method = getattr(requests, method_name)
-    logger.info('Issuing request: {} {}'.format(method_name.upper(), url))
-    if json_data is not None or data is not None:
-        kwargs['json'] = json_data
-        kwargs['data'] = data
-    resp = method(url, **kwargs)
-    resp.raise_for_status()
-    if not ignore_body:
-        return resp.json()
-def resource_exists(url):
-    try:
-        request(url, 'get', ignore_body=True)
-    except requests.HTTPError as exception:
-        if exception.response.status_code == 404:
-            return False
-        raise
-    return True
-class GitHub(object):
-    def __init__(self, api_root, owner, repo):
-        self.api_root = api_root
-        self.owner = owner
-        self.repo = repo
-    def is_collaborator(self, login):
-        return resource_exists(
-            '{}/repos/{}/{}/collaborators/{}'.format(
-                self.api_root, self.owner, self.repo, login
-            )
-        )
-    def ref_exists(self, ref):
-        return resource_exists(
-            '{}/repos/{}/{}/git/refs/{}'.format(
-                self.api_root, self.owner, self.repo, ref
-            )
-        )
-    def create_ref(self, ref, sha):
-        data = {
-            'ref': 'refs/{}'.format(ref),
-            'sha': sha
-        }
-        url = '{}/repos/{}/{}/git/refs'.format(
-            self.api_root, self.owner, self.repo
-        )
-        logger.info('Creating ref "{}" as {}'.format(ref, sha))
-        request(url, 'post', json_data=data)
-    def update_ref(self, ref, sha):
-        data = {
-            'force': True,
-            'sha': sha
-        }
-        url = '{}/repos/{}/{}/git/refs/{}'.format(
-            self.api_root, self.owner, self.repo, ref
-        )
-        logger.info('Updating ref "{}" as {}'.format(ref, sha))
-        request(url, 'patch', json_data=data)
-    def delete_ref(self, ref):
-        url = '{}/repos/{}/{}/git/refs/{}'.format(
-            self.api_root, self.owner, self.repo, ref
-        )
-        logger.info('Deleting ref "{}"'.format(ref))
-        try:
-            request(url, 'delete', ignore_body=True)
-        except requests.HTTPError as exception:
-            if exception.response.status_code != 404:
-                raise
-            logger.info(
-                'Attempted to delete non-existent ref: {}'.format(ref)
-            )
-    def set_ref(self, ref, sha):
-        if self.ref_exists(ref):
-            self.update_ref(ref, sha)
-        else:
-            self.create_ref(ref, sha)
-    def add_label(self, pr_number, label_name):
-        data = {
-            'labels': [label_name]
-        }
-        url = '{}/repos/{}/{}/issues/{}/labels'.format(
-            self.api_root, self.owner, self.repo, pr_number
-        )
-        logger.info('Adding label')
-        request(url, 'post', json_data=data)
-    def remove_label(self, pr_number, label_name):
-        url = '{}/repos/{}/{}/issues/{}/labels/{}'.format(
-            self.api_root, self.owner, self.repo, pr_number, label_name
-        )
-        logger.info('Removing label')
-        try:
-            request(url, 'delete')
-        except requests.HTTPError as exception:
-            if exception.response.status_code != 404:
-                raise
-            logger.info(
-                'Attempted to remove non-existent label: {}'.format(label_name)
-            )
-def main(api_root):
-    with open(os.environ['GITHUB_EVENT_PATH']) as handle:
-        event = json.load(handle)
-        logger.info(json.dumps(event, indent=2))
-    if 'pull_request' not in event:
-        logger.info('Unexpected event data')
-        return Status.FAIL
-    owner, repo = os.environ['GITHUB_REPOSITORY'].split('/', 1)
-    github = GitHub(api_root, owner, repo)
-    action = event['action']
-    pr_number = event['pull_request']['number']
-    ref_open = 'prs-open/gh-{}'.format(pr_number)
-    ref_labeled = 'prs-labeled-for-preview/gh-{}'.format(pr_number)
-    sha = event['pull_request']['head']['sha']
-    login = event['pull_request']['user']['login']
-    has_label = any([
-        label['name'] == active_label
-        for label in event['pull_request']['labels']
-    ])
-    target_label = event.get('label', {}).get('name')
-    if action == 'closed':
-        if has_label:
-            github.remove_label(pr_number, active_label)
-        # Removing a label from a GitHub Action will not trigger another
-        # Workflow, so the corresponding ref must be deleted while processing
-        # the "closed" action.
-        #
-        # > An action can't trigger other workflows. For example, a push,
-        # > deployment, or any task performed within an action with the
-        # > provided `GITHUB_TOKEN` will not trigger a workflow listening on
-        # > push, deploy, or any other supported action triggers.
-        #
-        # https://developer.github.com/actions/managing-workflows/workflow-configuration-options/
-        github.delete_ref(ref_open)
-        return Status.SUCCESS
-    elif action in ('opened', 'reopened') and has_label:
-        github.set_ref(ref_open, sha)
-        github.set_ref(ref_labeled, sha)
-    elif action in ('opened', 'reopened') and github.is_collaborator(login):
-        github.add_label(pr_number, active_label)
-        # Removing a label from a GitHub Action will not trigger another
-        # Workflow, so the corresponding ref must be created while processing
-        # the "opened" and "reopened" actions.
-        #
-        # > An action can't trigger other workflows. For example, a push,
-        # > deployment, or any task performed within an action with the
-        # > provided `GITHUB_TOKEN` will not trigger a workflow listening on
-        # > push, deploy, or any other supported action triggers.
-        #
-        # https://developer.github.com/actions/managing-workflows/workflow-configuration-options/
-        github.set_ref(ref_open, sha)
-        github.set_ref(ref_labeled, sha)
-    elif action == 'labeled' and target_label == active_label:
-        github.set_ref(ref_labeled, sha)
-    elif action == 'unlabeled' and target_label == active_label:
-        github.delete_ref(ref_labeled)
-    elif action == 'synchronize' and has_label:
-        github.set_ref(ref_open, sha)
-        github.set_ref(ref_labeled, sha)
-    else:
-        return Status.NEUTRAL
-    return Status.SUCCESS
-if __name__ == '__main__':
-    code = main(sys.argv[1])
-    assert isinstance(code, int)
-    sys.exit(code)
--- a/third_party/blink/web_tests/external/wpt/tools/docker/Dockerfile.webkitgtk
+++ b/third_party/blink/web_tests/external/wpt/tools/docker/Dockerfile.webkitgtk
+# This image for WebKitGTK tests is based on Debian stable to ensure binary
+# compatibility with ToT/trunk built-products from build.webkit.org bots.
+# See https://github.com/web-platform-tests/wpt/pull/18595#issuecomment-537267080
+FROM debian:10
+# No interactive frontend during docker build
+ENV DEBIAN_FRONTEND=noninteractive \
+    DEBCONF_NONINTERACTIVE_SEEN=true
+# Install general requirements not in the base image
+RUN apt-get -qqy update \
+  && apt-get -qqy install \
+    bzip2 \
+    ca-certificates \
+    dbus-x11 \
+    earlyoom \
+    fluxbox \
+    gdebi \
+    git \
+    locales \
+    pulseaudio \
+    python \
+    python-pip \
+    python-virtualenv \
+    tzdata \
+    sudo \
+    unzip \
+    wget \
+    xvfb \
+    git-core
+# Configure buster-wpt-webkit-updates repository
+RUN apt-key adv --fetch-keys https://webkitgtk.org/debian/apt.key
+RUN printf 'deb [arch=amd64] https://webkitgtk.org/debian buster-wpt-webkit-updates main' \
+    > /etc/apt/sources.list.d/webkitgtk.list
+RUN printf 'Package: *\nPin: origin webkitgtk.org\nPin-Priority: 1999' \
+    > /etc/apt/preferences.d/99webkitgtk
+# Update and upgrade
+RUN apt-get update \
+  && apt-get -y upgrade
+# Install webkit packages from https://webkitgtk.org/debian
+RUN apt-get install -y -t buster-wpt-webkit-updates webkit2gtk-driver
+# Set the timezone
+ENV TZ "UTC"
+RUN echo "${TZ}" > /etc/timezone \
+  && dpkg-reconfigure --frontend noninteractive tzdata
+# Set the locale
+RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen \
+  && dpkg-reconfigure --frontend noninteractive locales
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+ENV LC_ALL en_US.UTF-8
+RUN useradd test \
+         --shell /bin/bash  \
+         --create-home \
+  && usermod -a -G sudo test \
+  && echo 'ALL ALL = (ALL) NOPASSWD: ALL' >> /etc/sudoers \
+  && echo 'test:secret' | chpasswd
+ENV SCREEN_WIDTH 1280
+ENV SCREEN_HEIGHT 1024
+ENV SCREEN_DEPTH 24
+ENV DISPLAY :99.0
+USER test
+WORKDIR /home/test
+# Remove information on how to use sudo on login
+RUN sudo echo ""
+RUN mkdir -p /home/test/artifacts
+RUN mkdir -p /home/test/bin
+ENV PATH="/home/test/bin:/home/test/.local/bin:${PATH}"
+WORKDIR /home/test/
+COPY .bashrc /home/test/.bashrc
+COPY start.sh /home/test/start.sh
+COPY retry.py /home/test/bin/retry
--- a/third_party/blink/web_tests/external/wpt/tools/docker/README.md
+++ b/third_party/blink/web_tests/external/wpt/tools/docker/README.md
+This docker images is used for testing Chrome, Firefox and running other tasks
+on Taskcluster. When any of the files in this directory change, the images must
+be updated as well. To do this, assuming you have docker installed:
+In this directory, run
+```sh
+docker build -t <tag> .
+docker push <tag>
+```
+Then update the `image` specified in the project's .taskcluster.yml file.
+To update the image used for WebKitGTK:
+```sh
+docker build -f Dockerfile.webkitgtk -t <tag> .
+docker push <tag>
+```
+(This image is not yet used in .taskcluster.yml.)
--- a/third_party/blink/web_tests/external/wpt/tools/docker/start.sh
+++ b/third_party/blink/web_tests/external/wpt/tools/docker/start.sh
 #!/bin/bash
-# This script is embedded in the docker image, and so the image must be updated when changes
-# to the script are made. To do this, assuming you have docker installed:
-# In tools/docker/ :
-#   docker build .
-#   docker ps # and look for the id of the image you just built
-#   docker tag <image> <tag>
-#   docker push <tag>
-# Update the `image` specified in the project's .taskcluster.yml file
 set -ex
 REMOTE=${1:-https://github.com/web-platform-tests/wpt}

--- a/third_party/blink/web_tests/external/wpt/tools/tox.ini
+++ b/third_party/blink/web_tests/external/wpt/tools/tox.ini
@@ -8,8 +8,6 @@ deps =
  pytest-cov
  mock
  hypothesis
-  # `requests` is required by `update_pr_preview.py`
-  requests
 commands = pytest {posargs}