Merge mozilla-central to autoland. a=merge on a CLOSED TREE

2018-12-14 18:32:07 +02:00 · 2018-12-14 18:32:07 +02:00 · a4361b904b
--- a/browser/base/content/browser-siteIdentity.js
+++ b/browser/base/content/browser-siteIdentity.js
@ -50,7 +50,7 @@ var gIdentityHandler = {
   * RegExp used to decide if an about url should be shown as being part of
   * the browser UI.
   */
-  _secureInternalUIWhitelist: /^(?:accounts|addons|cache|config|crashes|customizing|downloads|healthreport|license|permissions|preferences|rights|searchreset|sessionrestore|support|welcomeback)(?:[?#]|$)/i,
+  _secureInternalUIWhitelist: /^(?:accounts|addons|cache|config|crashes|customizing|downloads|healthreport|license|permissions|preferences|rights|sessionrestore|support|welcomeback)(?:[?#]|$)/i,

  get _isBroken() {
    return this._state & Ci.nsIWebProgressListener.STATE_IS_BROKEN;
--- a/browser/components/about/AboutRedirector.cpp
+++ b/browser/components/about/AboutRedirector.cpp
@ -67,8 +67,6 @@ static const RedirEntry kRedirMap[] = {
    {"robots", "chrome://browser/content/aboutRobots.xhtml",
     nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
         nsIAboutModule::ALLOW_SCRIPT},
-    {"searchreset", "chrome://browser/content/search/searchReset.xhtml",
-     nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::HIDE_FROM_ABOUTABOUT},
    {"sessionrestore", "chrome://browser/content/aboutSessionRestore.xhtml",
     nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::HIDE_FROM_ABOUTABOUT},
    {"welcomeback", "chrome://browser/content/aboutWelcomeBack.xhtml",
--- a/browser/components/search/content/searchReset.js
+++ b/browser/components/search/content/searchReset.js
@ -1,98 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-"use strict";
-
-ChromeUtils.import("resource://gre/modules/Services.jsm");
-
-const TELEMETRY_RESULT_ENUM = {
-  RESTORED_DEFAULT: 0,
-  KEPT_CURRENT: 1,
-  CHANGED_ENGINE: 2,
-  CLOSED_PAGE: 3,
-  OPENED_SETTINGS: 4,
-};
-
-window.onload = function() {
-  let defaultEngineParagraph = document.getElementById("defaultEngineParagraph");
-  let originalDefault = Services.search.originalDefaultEngine;
-  document.l10n.setAttributes(defaultEngineParagraph, "page-info-new-search-engine",
-                              { searchEngine: originalDefault.name });
-  let defaultEngine = document.getElementById("defaultEngine");
-  defaultEngine.style.backgroundImage =
-    'url("' + originalDefault.iconURI.spec + '")';
-
-  document.getElementById("searchResetChangeEngine").focus();
-  window.addEventListener("unload", recordPageClosed);
-  document.getElementById("linkSettingsPage")
-          .addEventListener("click", openingSettings);
-};
-
-function doSearch() {
-  let queryString = "";
-  let purpose = "";
-  let params = window.location.href.match(/^about:searchreset\?([^#]*)/);
-  if (params) {
-    params = params[1].split("&");
-    for (let param of params) {
-      if (param.startsWith("data="))
-        queryString = decodeURIComponent(param.slice(5));
-      else if (param.startsWith("purpose="))
-        purpose = param.slice(8);
-    }
-  }
-
-  let engine = Services.search.defaultEngine;
-  let submission = engine.getSubmission(queryString, null, purpose);
-
-  window.removeEventListener("unload", recordPageClosed);
-
-  let win = window.docShell.rootTreeItem.domWindow;
-  win.openTrustedLinkIn(submission.uri.spec, "current", {
-    allowThirdPartyFixup: false,
-    postData: submission.postData,
-  });
-}
-
-function openingSettings() {
-  record(TELEMETRY_RESULT_ENUM.OPENED_SETTINGS);
-  savePref("customized");
-  window.removeEventListener("unload", recordPageClosed);
-}
-
-function savePref(value) {
-  const statusPref = "browser.search.reset.status";
-  if (Services.prefs.getCharPref(statusPref, "") == "pending")
-    Services.prefs.setCharPref(statusPref, value);
-}
-
-function record(result) {
-  Services.telemetry.getHistogramById("SEARCH_RESET_RESULT").add(result);
-}
-
-function keepCurrentEngine() {
-  // Calling the defaultEngine setter will force a correct loadPathHash to be
-  // written for this engine, so that we don't prompt the user again.
-  // eslint-disable-next-line no-self-assign
-  Services.search.defaultEngine = Services.search.defaultEngine;
-  record(TELEMETRY_RESULT_ENUM.KEPT_CURRENT);
-  savePref("declined");
-  doSearch();
-}
-
-function changeSearchEngine() {
-  let engine = Services.search.originalDefaultEngine;
-  if (engine.hidden)
-    engine.hidden = false;
-  Services.search.defaultEngine = engine;
-
-  record(TELEMETRY_RESULT_ENUM.RESTORED_DEFAULT);
-  savePref("accepted");
-
-  doSearch();
-}
-
-function recordPageClosed() {
-  record(TELEMETRY_RESULT_ENUM.CLOSED_PAGE);
-}
--- a/browser/components/search/content/searchReset.xhtml
+++ b/browser/components/search/content/searchReset.xhtml
@ -1,56 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-<!DOCTYPE html>
-
-<html xmlns="http://www.w3.org/1999/xhtml"
-      xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
-  <head>
-    <title data-l10n-id="tab-title"/>
-    <link rel="stylesheet" type="text/css" media="all"
-          href="chrome://global/skin/in-content/info-pages.css"/>
-    <link rel="stylesheet" type="text/css" media="all"
-          href="chrome://browser/skin/searchReset.css"/>
-    <link rel="icon" type="image/png"
-          href="chrome://browser/skin/favicon-search-16.svg"/>
-
-    <script type="application/javascript"
-            src="chrome://browser/content/search/searchReset.js"/>
-    <link rel="localization" href="browser/aboutSearchReset.ftl"/>
-    <link rel="localization" href="branding/brand.ftl"/>
-  </head>
-
-  <body>
-
-    <div class="container">
-      <div class="title">
-        <h1 class="title-text" data-l10n-id="page-title"/>
-      </div>
-
-      <div class="description">
-        <p data-l10n-id="page-info-outofdate"/>
-        <p id="defaultEngineParagraph">
-          <span id="defaultEngine" data-l10n-name="default-engine"/>
-        </p>
-
-        <p data-l10n-id="page-info-how-to-change">
-          <a id="linkSettingsPage" href="about:preferences#search" data-l10n-name="link"></a>
-        </p>
-      </div>
-
-      <div class="button-container">
-        <xul:button id="searchResetKeepCurrent"
-                    data-l10n-id="no-change-button"
-                    oncommand="keepCurrentEngine();"/>
-        <xul:button class="primary"
-                    id="searchResetChangeEngine"
-                    data-l10n-id="change-engine-button"
-                    oncommand="changeSearchEngine();"/>
-      </div>
-    </div>
-
-  </body>
-</html>
--- a/browser/components/search/jar.mn
+++ b/browser/components/search/jar.mn
@ -6,8 +6,6 @@ browser.jar:
        content/browser/search/search.xml                           (content/search.xml)
        content/browser/search/searchbar.js                         (content/searchbar.js)
        content/browser/search/search-one-offs.js                   (content/search-one-offs.js)
-        content/browser/search/searchReset.xhtml                    (content/searchReset.xhtml)
-        content/browser/search/searchReset.js                       (content/searchReset.js)

        searchplugins/                                              (searchplugins/**)

--- a/browser/components/search/test/browser/browser.ini
+++ b/browser/components/search/test/browser/browser.ini
@ -38,8 +38,6 @@ skip-if = verify
 [browser_oneOffHeader.js]
 skip-if = os == "mac" #1421238
 [browser_private_search_perwindowpb.js]
-[browser_aboutSearchReset.js]
-disabled = bug 1488946 - Telemetry probe needs extension
 [browser_searchbar_openpopup.js]
 skip-if = os == "linux" # Linux has different focus behaviours.
 [browser_searchbar_keyboard_navigation.js]
--- a/browser/components/search/test/browser/browser_aboutSearchReset.js
+++ b/browser/components/search/test/browser/browser_aboutSearchReset.js
@ -1,181 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/
- */
-
-const TELEMETRY_RESULT_ENUM = {
-  RESTORED_DEFAULT: 0,
-  KEPT_CURRENT: 1,
-  CHANGED_ENGINE: 2,
-  CLOSED_PAGE: 3,
-  OPENED_SETTINGS: 4,
-};
-
-const kSearchStr = "a search";
-const kSearchPurpose = "searchbar";
-
-const kTestEngine = "testEngine.xml";
-
-const kStatusPref = "browser.search.reset.status";
-
-function checkTelemetryRecords(expectedValue) {
-  let histogram = Services.telemetry.getHistogramById("SEARCH_RESET_RESULT");
-  let snapshot = histogram.snapshot();
-  if (expectedValue != null) {
-    Assert.deepEqual(snapshot.values[expectedValue], 1,
-                     "histogram has expected content");
-  } else {
-    Assert.deepEqual(!!snapshot.values[expectedValue], false,
-                     "histogram has expected content");
-  }
-  histogram.clear();
-}
-
-function promiseStoppedLoad(expectedURL) {
-  return new Promise(resolve => {
-    let browser = gBrowser.selectedBrowser;
-    let original = browser.loadURI;
-    browser.loadURI = function(URI) {
-      if (URI == expectedURL) {
-        browser.loadURI = original;
-        ok(true, "loaded expected url: " + URI);
-        resolve();
-        return;
-      }
-
-      original.apply(browser, arguments);
-    };
-  });
-}
-
-var gTests = [
-
-{
-  desc: "Test the 'Keep Current Settings' button.",
-  async run() {
-    let engine = await promiseNewEngine(kTestEngine, {setAsCurrent: true});
-
-    let expectedURL = engine.
-                      getSubmission(kSearchStr, null, kSearchPurpose).
-                      uri.spec;
-
-    let rawEngine = engine.wrappedJSObject;
-    let initialHash = rawEngine.getAttr("loadPathHash");
-    rawEngine.setAttr("loadPathHash", "broken");
-    Services.prefs.setCharPref(kStatusPref, "pending");
-
-    let loadPromise = promiseStoppedLoad(expectedURL);
-    await BrowserTestUtils.synthesizeMouseAtCenter("#searchResetKeepCurrent", {},
-                                                   gBrowser.selectedBrowser);
-    await loadPromise;
-
-    is(engine, Services.search.defaultEngine,
-       "the custom engine is still default");
-    is(rawEngine.getAttr("loadPathHash"), initialHash,
-       "the loadPathHash has been fixed");
-
-    checkTelemetryRecords(TELEMETRY_RESULT_ENUM.KEPT_CURRENT);
-    is(Services.prefs.getCharPref(kStatusPref), "declined");
-  },
-},
-
-{
-  desc: "Test the 'Restore Search Defaults' button.",
-  async run() {
-    let currentEngine = Services.search.defaultEngine;
-    let originalEngine = Services.search.originalDefaultEngine;
-    let browser = gBrowser.selectedBrowser;
-    let defaultEngineSpanText =
-      await ContentTask.spawn(browser, null, async () => {
-        return content.document.getElementById("defaultEngine").textContent;
-      });
-
-    is(defaultEngineSpanText, originalEngine.name,
-       "the name of the original default engine is displayed");
-
-    let expectedURL = originalEngine.
-                      getSubmission(kSearchStr, null, kSearchPurpose).
-                      uri.spec;
-    let loadPromise = promiseStoppedLoad(expectedURL);
-
-    await ContentTask.spawn(browser, null, async () => {
-      let button = content.document.getElementById("searchResetChangeEngine");
-      Assert.equal(content.document.activeElement, button,
-                   "the 'Change Search Engine' button is focused");
-    });
-
-    Services.prefs.setCharPref(kStatusPref, "pending");
-    await BrowserTestUtils.synthesizeMouseAtCenter("#searchResetChangeEngine",
-                                                   {}, browser);
-    await loadPromise;
-
-    is(originalEngine, Services.search.defaultEngine,
-       "the default engine is back to the original one");
-
-    checkTelemetryRecords(TELEMETRY_RESULT_ENUM.RESTORED_DEFAULT);
-    is(Services.prefs.getCharPref(kStatusPref), "accepted");
-    Services.search.defaultEngine = currentEngine;
-  },
-},
-
-{
-  desc: "Click the settings link.",
-  async run() {
-    Services.prefs.setCharPref(kStatusPref, "pending");
-    let loadPromise = BrowserTestUtils.browserLoaded(gBrowser.selectedBrowser,
-                                                     false,
-                                                     "about:preferences#search");
-    let browser = gBrowser.selectedBrowser;
-    await BrowserTestUtils.synthesizeMouseAtCenter("#linkSettingsPage",
-                                                   {}, browser);
-    await loadPromise;
-
-    checkTelemetryRecords(TELEMETRY_RESULT_ENUM.OPENED_SETTINGS);
-    is(Services.prefs.getCharPref(kStatusPref), "customized");
-  },
-},
-
-{
-  desc: "Load another page without clicking any of the buttons.",
-  async run() {
-    Services.prefs.setCharPref(kStatusPref, "pending");
-    await promiseTabLoadEvent(gBrowser.selectedTab, "about:mozilla");
-
-    checkTelemetryRecords(TELEMETRY_RESULT_ENUM.CLOSED_PAGE);
-    is(Services.prefs.getCharPref(kStatusPref), "pending");
-  },
-},
-
-];
-
-function test() {
-  waitForExplicitFinish();
-  (async function() {
-    let oldCanRecord = Services.telemetry.canRecordExtended;
-    Services.telemetry.canRecordExtended = true;
-    checkTelemetryRecords();
-
-    for (let testCase of gTests) {
-      info(testCase.desc);
-
-      // Create a tab to run the test.
-      let tab = gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser, "about:blank");
-
-      // Start loading about:searchreset and wait for it to complete.
-      let url = "about:searchreset?data=" + encodeURIComponent(kSearchStr) +
-                "&purpose=" + kSearchPurpose;
-      await promiseTabLoadEvent(tab, url);
-
-      info("Running test");
-      await testCase.run();
-
-      info("Cleanup");
-      gBrowser.removeCurrentTab();
-    }
-
-    Services.prefs.clearUserPref(kStatusPref);
-    Services.telemetry.canRecordExtended = oldCanRecord;
-  })().then(finish, ex => {
-    ok(false, "Unexpected Exception: " + ex);
-    finish();
-  });
-}
--- a/browser/locales/en-US/browser/aboutSearchReset.ftl
+++ b/browser/locales/en-US/browser/aboutSearchReset.ftl
@ -1,17 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-tab-title = Restore Search Settings
-page-title = Restore your search settings?
-page-info-outofdate = Your search settings might be out-of-date. { -brand-short-name } can help you restore the default search settings.
-# Variables:
-#   $searchEngine (String) - Name of the default search engine e.g. Google
-page-info-new-search-engine = This will set your default search engine to <span data-l10n-name="default-engine">{ $searchEngine }</span>
-page-info-how-to-change = You can change these settings at any time from the <a data-l10n-name="link">Settings page</a>.
-no-change-button =
-    .label = Don’t Change
-    .accesskey = D
-change-engine-button =
-    .label = Change Search Engine
-    .accesskey = C
--- a/browser/locales/en-US/chrome/browser/search.properties
+++ b/browser/locales/en-US/chrome/browser/search.properties
@ -49,18 +49,3 @@ searchWithHeader=Search with:
 # LOCALIZATION NOTE (searchSettings):
 # This is the label for the button that opens Search preferences.
 searchSettings=Change Search Settings
-
-# LOCALIZATION NOTE (searchReset.intro):
-# %S is the name of the user's current search engine.
-searchReset.intro=Did you want to search using %S?
-# LOCALIZATION NOTE (searchReset.message):
-# %1$S is brandShortName. %2$S is the name of the user's current search engine.
-searchReset.message=It appears that your default search engine has changed. Should %1$S make %2$S the default search engine?
-# LOCALIZATION NOTE (searchReset.doNotResetButton):
-# This string is used as a button label in a notification popup.
-searchReset.doNotResetButton=No Thanks
-# LOCALIZATION NOTE (searchReset.resetButton):
-# %S is the name of the user's current search engine. This string is used as a
-# button label in a notification popup, where space is limited.  If necessary,
-# translate simply as "Yes, Use %S" (e.g., "Yes, use Google")
-searchReset.resetButton=Yes, Use %S to Search
--- a/browser/themes/shared/favicon-search-16.svg
+++ b/browser/themes/shared/favicon-search-16.svg
@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
-  <circle cx="8" cy="8" r="8" fill="#58bf43"/>
-  <circle cx="8" cy="8" r="7.5" stroke="#41a833" stroke-width="1" fill="none"/>
-  <path d="M12.879,12L12,12.879,9.015,9.9A4.276,4.276,0,1,1,9.9,9.015ZM6.5,3.536A2.964,2.964,0,1,0,9.464,6.5,2.964,2.964,0,0,0,6.5,3.536Z" stroke="#41a833" stroke-width="2" fill="none"/>
-  <path d="M12.879,12L12,12.879,9.015,9.9A4.276,4.276,0,1,1,9.9,9.015ZM6.5,3.536A2.964,2.964,0,1,0,9.464,6.5,2.964,2.964,0,0,0,6.5,3.536Z" fill="#fff"/>
-</svg>
--- a/browser/themes/shared/incontent-icons/icon-search-64.svg
+++ b/browser/themes/shared/incontent-icons/icon-search-64.svg
@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg xmlns="http://www.w3.org/2000/svg" width="64" height="64" viewBox="0 0 64 64">
-  <ellipse cx="32" cy="34" rx="29.5" ry="30" fill="#000" fill-opacity=".1"/>
-  <circle cx="32" cy="32" r="30" fill="#58bf43"/>
-  <circle cx="32" cy="32" r="29.5" stroke="#41a833" stroke-width="1" fill="none"/>
-  <path d="M50,47.131L47.131,50,36.776,39.647a16.038,16.038,0,1,1,2.871-2.871ZM27,15A12,12,0,1,0,39,27,12,12,0,0,0,27,15Z" stroke="#41a833" stroke-width="2" fill="none"/>
-  <path d="M50,47.131L47.131,50,36.776,39.647a16.038,16.038,0,1,1,2.871-2.871ZM27,15A12,12,0,1,0,39,27,12,12,0,0,0,27,15Z" fill="#fff"/>
-  <circle cx="27" cy="27" r="13" fill="#fff" fill-opacity=".2"/>
-</svg>
--- a/browser/themes/shared/jar.inc.mn
+++ b/browser/themes/shared/jar.inc.mn
@ -55,7 +55,6 @@
  skin/classic/browser/identity-icon.svg                       (../shared/identity-block/identity-icon.svg)
  skin/classic/browser/identity-icon-notice.svg                (../shared/identity-block/identity-icon-notice.svg)
  skin/classic/browser/info.svg                                (../shared/info.svg)
-  skin/classic/browser/searchReset.css                         (../shared/searchReset.css)

  skin/classic/browser/illustrations/error-session-restore.svg (../shared/illustrations/error-session-restore.svg)

@ -224,8 +223,6 @@
  skin/classic/browser/cert-error-new.svg                      (../shared/incontent-icons/cert-error-new.svg)
  skin/classic/browser/wifi.svg                                (../shared/incontent-icons/wifi.svg)
  skin/classic/browser/tab-crashed.svg                         (../shared/incontent-icons/tab-crashed.svg)
-  skin/classic/browser/favicon-search-16.svg                   (../shared/favicon-search-16.svg)
-  skin/classic/browser/icon-search-64.svg                      (../shared/incontent-icons/icon-search-64.svg)
  skin/classic/browser/welcome-back.svg                        (../shared/incontent-icons/welcome-back.svg)
  skin/classic/browser/readerMode.svg                          (../shared/reader/readerMode.svg)
  skin/classic/browser/panic-panel/header.png                  (../shared/panic-panel/header.png)
--- a/browser/themes/shared/searchReset.css
+++ b/browser/themes/shared/searchReset.css
@ -1,22 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-body {
-  align-items: center;
-}
-
-.title {
-  background-image: url("chrome://browser/skin/icon-search-64.svg");
-}
-
-#defaultEngine {
-  padding-inline-start: 26px;
-  background-repeat: no-repeat;
-  background-position: 5px center;
-  background-size: 16px, 16px;
-}
-
-#defaultEngine:dir(rtl) {
-  background-position: calc(100% - 5px) center;
-}
--- a/devtools/client/debugger/new/src/actions/ast/setPausePoints.js
+++ b/devtools/client/debugger/new/src/actions/ast/setPausePoints.js
@ -49,7 +49,10 @@ export function setPausePoints(sourceId: SourceId) {
    }

    let pausePoints = await parser.getPausePoints(sourceId);
-    pausePoints = await mapLocations(pausePoints, source, sourceMaps);
+
+    if (features.columnBreakpoints) {
+      pausePoints = await mapLocations(pausePoints, source, sourceMaps);
+    }

    if (isGenerated(source)) {
      const compressed = compressPausePoints(pausePoints);
--- a/devtools/client/debugger/new/src/utils/pause/pausePoints.js
+++ b/devtools/client/debugger/new/src/utils/pause/pausePoints.js
@ -47,13 +47,14 @@ export async function mapPausePoints<T>(
  iteratee: PausePoint => T
 ) {
  const results = await Promise.all(convertToList(pausePoints).map(iteratee));
+  let index = 0;

  const newPausePoints = {};
  for (const line in pausePoints) {
    const linePoints = pausePoints[line];
    const newLinePoints = (newPausePoints[line] = {});
    for (const column in linePoints) {
-      newLinePoints[column] = results.shift();
+      newLinePoints[column] = results[index++];
    }
  }

--- a/dom/base/TimeoutManager.cpp
+++ b/dom/base/TimeoutManager.cpp
@ -40,7 +40,6 @@ static int32_t gMinBackgroundTimeoutValue = 0;
 static int32_t gMinTrackingTimeoutValue = 0;
 static int32_t gMinTrackingBackgroundTimeoutValue = 0;
 static int32_t gTimeoutThrottlingDelay = 0;
-static bool gAnnotateTrackingChannels = false;

 #define DEFAULT_BACKGROUND_BUDGET_REGENERATION_FACTOR 100  // 1ms per 100ms
 #define DEFAULT_FOREGROUND_BUDGET_REGENERATION_FACTOR 1    // 1ms per 1ms
@ -398,7 +397,9 @@ TimeoutManager::TimeoutManager(nsGlobalWindowInner& aWindow)
      mBudgetThrottleTimeouts(false) {
  MOZ_LOG(gLog, LogLevel::Debug,
          ("TimeoutManager %p created, tracking bucketing %s\n", this,
-           gAnnotateTrackingChannels ? "enabled" : "disabled"));
+           StaticPrefs::privacy_trackingprotection_annotate_channels()
+               ? "enabled"
+               : "disabled"));
 }

 TimeoutManager::~TimeoutManager() {
@ -427,10 +428,6 @@ void TimeoutManager::Initialize() {
                              "dom.timeout.throttling_delay",
                              DEFAULT_TIMEOUT_THROTTLING_DELAY);

-  Preferences::AddBoolVarCache(&gAnnotateTrackingChannels,
-                               "privacy.trackingprotection.annotate_channels",
-                               false);
-
  Preferences::AddUintVarCache(&gMaxConsecutiveCallbacksMilliseconds,
                               "dom.timeout.max_consecutive_callbacks_ms",
                               DEFAULT_MAX_CONSECUTIVE_CALLBACKS_MILLISECONDS);
--- a/dom/base/moz.build
+++ b/dom/base/moz.build
@ -486,6 +486,7 @@ LOCAL_INCLUDES += [
    '/layout/svg',
    '/layout/xul',
    '/netwerk/base',
+    '/netwerk/url-classifier',
    '/security/manager/ssl',
    '/widget',
    '/xpcom/ds',
--- a/dom/base/nsContentUtils.cpp
+++ b/dom/base/nsContentUtils.cpp
@ -317,7 +317,6 @@ bool nsContentUtils::sAnimationsAPICoreEnabled = false;
 bool nsContentUtils::sGetBoxQuadsEnabled = false;
 bool nsContentUtils::sSkipCursorMoveForSameValueSet = false;
 bool nsContentUtils::sRequestIdleCallbackEnabled = false;
-bool nsContentUtils::sLowerNetworkPriority = false;
 bool nsContentUtils::sTailingEnabled = false;
 bool nsContentUtils::sShowInputPlaceholderOnFocus = true;
 bool nsContentUtils::sAutoFocusEnabled = true;
@ -692,10 +691,6 @@ nsresult nsContentUtils::Init() {
  sBypassCSSOMOriginCheck = getenv("MOZ_BYPASS_CSSOM_ORIGIN_CHECK");
 #endif

-  Preferences::AddBoolVarCache(
-      &sLowerNetworkPriority,
-      "privacy.trackingprotection.lower_network_priority", false);
-
  Preferences::AddBoolVarCache(&sTailingEnabled, "network.http.tailing.enabled",
                               true);

--- a/dom/base/nsContentUtils.h
+++ b/dom/base/nsContentUtils.h
@ -3223,10 +3223,6 @@ class nsContentUtils {
   */
  static bool GetUserIsInteracting();

-  // Check pref "privacy.trackingprotection.lower_network_priority" to see
-  // if we want to lower the priority of the channel.
-  static bool IsLowerNetworkPriority() { return sLowerNetworkPriority; }
-
  // Whether tracker tailing is turned on - "network.http.tailing.enabled".
  static bool IsTailingEnabled() { return sTailingEnabled; }

@ -3472,7 +3468,6 @@ class nsContentUtils {
  static bool sGetBoxQuadsEnabled;
  static bool sSkipCursorMoveForSameValueSet;
  static bool sRequestIdleCallbackEnabled;
-  static bool sLowerNetworkPriority;
  static bool sTailingEnabled;
  static bool sShowInputPlaceholderOnFocus;
  static bool sAutoFocusEnabled;
--- a/dom/fetch/FetchDriver.cpp
+++ b/dom/fetch/FetchDriver.cpp
@ -684,7 +684,8 @@ nsresult FetchDriver::HttpFetch(
                       nsIClassOfService::Tail);
  }

-  if (mIsTrackingFetch && nsContentUtils::IsLowerNetworkPriority()) {
+  if (mIsTrackingFetch &&
+      StaticPrefs::privacy_trackingprotection_lower_network_priority()) {
    nsCOMPtr<nsISupportsPriority> p = do_QueryInterface(chan);
    if (p) {
      p->SetPriority(nsISupportsPriority::PRIORITY_LOWEST);
--- a/dom/ipc/ContentChild.cpp
+++ b/dom/ipc/ContentChild.cpp
@ -3191,7 +3191,7 @@ bool ContentChild::DeallocPURLClassifierChild(PURLClassifierChild* aActor) {
 }

 PURLClassifierLocalChild* ContentChild::AllocPURLClassifierLocalChild(
-    const URIParams& aUri, const nsCString& aTables) {
+    const URIParams& aUri, const nsTArray<IPCURLClassifierFeature>& aFeatures) {
  return new URLClassifierLocalChild();
 }

--- a/dom/ipc/ContentChild.h
+++ b/dom/ipc/ContentChild.h
@ -644,7 +644,8 @@ class ContentChild final : public PContentChild,

  // PURLClassifierLocalChild
  virtual PURLClassifierLocalChild* AllocPURLClassifierLocalChild(
-      const URIParams& aUri, const nsCString& aTables) override;
+      const URIParams& aUri,
+      const nsTArray<IPCURLClassifierFeature>& aFeatures) override;
  virtual bool DeallocPURLClassifierLocalChild(
      PURLClassifierLocalChild* aActor) override;

--- a/dom/ipc/ContentParent.cpp
+++ b/dom/ipc/ContentParent.cpp
@ -5353,7 +5353,7 @@ bool ContentParent::DeallocPURLClassifierParent(PURLClassifierParent* aActor) {
 // PURLClassifierLocalParent

 PURLClassifierLocalParent* ContentParent::AllocPURLClassifierLocalParent(
-    const URIParams& aURI, const nsCString& aTables) {
+    const URIParams& aURI, const nsTArray<IPCURLClassifierFeature>& aFeatures) {
  MOZ_ASSERT(NS_IsMainThread());

  RefPtr<URLClassifierLocalParent> actor = new URLClassifierLocalParent();
@ -5362,10 +5362,12 @@ PURLClassifierLocalParent* ContentParent::AllocPURLClassifierLocalParent(

 mozilla::ipc::IPCResult ContentParent::RecvPURLClassifierLocalConstructor(
    PURLClassifierLocalParent* aActor, const URIParams& aURI,
-    const nsCString& aTables) {
+    nsTArray<IPCURLClassifierFeature>&& aFeatures) {
  MOZ_ASSERT(NS_IsMainThread());
  MOZ_ASSERT(aActor);

+  nsTArray<IPCURLClassifierFeature> features = std::move(aFeatures);
+
  nsCOMPtr<nsIURI> uri = DeserializeURI(aURI);
  if (!uri) {
    NS_WARNING("Failed to DeserializeURI");
@ -5373,7 +5375,7 @@ mozilla::ipc::IPCResult ContentParent::RecvPURLClassifierLocalConstructor(
  }

  auto* actor = static_cast<URLClassifierLocalParent*>(aActor);
-  return actor->StartClassify(uri, aTables);
+  return actor->StartClassify(uri, features);
 }

 bool ContentParent::DeallocPURLClassifierLocalParent(
--- a/dom/ipc/ContentParent.h
+++ b/dom/ipc/ContentParent.h
@ -560,10 +560,12 @@ class ContentParent final : public PContentParent,

  // PURLClassifierLocalParent.
  virtual PURLClassifierLocalParent* AllocPURLClassifierLocalParent(
-      const URIParams& aURI, const nsCString& aTables) override;
+      const URIParams& aURI,
+      const nsTArray<IPCURLClassifierFeature>& aFeatures) override;
+
  virtual mozilla::ipc::IPCResult RecvPURLClassifierLocalConstructor(
      PURLClassifierLocalParent* aActor, const URIParams& aURI,
-      const nsCString& aTables) override;
+      nsTArray<IPCURLClassifierFeature>&& aFeatures) override;

  virtual PLoginReputationParent* AllocPLoginReputationParent(
      const URIParams& aURI) override;
--- a/dom/ipc/PContent.ipdl
+++ b/dom/ipc/PContent.ipdl
@ -297,6 +297,13 @@ struct StringBundleDescriptor
    uint32_t mapSize;
 };

+struct IPCURLClassifierFeature
+{
+    nsCString featureName;
+    nsCString[] tables;
+    nsCString skipHostList;
+};
+
 /**
 * The PContent protocol is a top-level protocol between the UI process
 * and a content process. There is exactly one PContentParent/PContentChild pair
@ -803,10 +810,12 @@ parent:

    sync PURLClassifier(Principal principal, bool useTrackingProtection)
        returns (bool success);
+
    sync ClassifyLocal(URIParams uri, nsCString tables)
        returns (nsresult rv, nsCString[] results);
+
    // The async version of ClassifyLocal.
-    async PURLClassifierLocal(URIParams uri, nsCString tables);
+    async PURLClassifierLocal(URIParams uri, IPCURLClassifierFeature[] features);

    async PLoginReputation(URIParams formURI);

--- a/dom/ipc/PURLClassifierLocal.ipdl
+++ b/dom/ipc/PURLClassifierLocal.ipdl
@ -11,12 +11,18 @@ include PURLClassifierInfo;
 namespace mozilla {
 namespace dom {

+struct URLClassifierLocalResult
+{
+  nsCString featureName;
+  nsCString matchingList;
+};
+
 protocol PURLClassifierLocal
 {
  manager PContent;

 child:
-  async __delete__(MaybeInfo info, nsresult errorCode);
+  async __delete__(URLClassifierLocalResult[] results);
 };

 } // namespace dom
--- a/dom/ipc/URLClassifierChild.h
+++ b/dom/ipc/URLClassifierChild.h
@ -9,16 +9,15 @@

 #include "mozilla/dom/PURLClassifierChild.h"
 #include "mozilla/dom/PURLClassifierLocalChild.h"
+#include "mozilla/net/UrlClassifierFeatureResult.h"
 #include "nsIURIClassifier.h"
+#include "nsIUrlClassifierFeature.h"

 namespace mozilla {
 namespace dom {

-template <typename BaseProtocol>
-class URLClassifierChildBase : public BaseProtocol {
+class URLClassifierChild : public PURLClassifierChild {
 public:
-  URLClassifierChildBase() = default;
-
  void SetCallback(nsIURIClassifierCallback* aCallback) {
    mCallback = aCallback;
  }
@ -35,14 +34,50 @@ class URLClassifierChildBase : public BaseProtocol {
  }

 private:
-  ~URLClassifierChildBase() = default;
-
  nsCOMPtr<nsIURIClassifierCallback> mCallback;
 };

-using URLClassifierChild = URLClassifierChildBase<PURLClassifierChild>;
-using URLClassifierLocalChild =
-    URLClassifierChildBase<PURLClassifierLocalChild>;
+class URLClassifierLocalChild : public PURLClassifierLocalChild {
+ public:
+  void SetFeaturesAndCallback(
+      const nsTArray<RefPtr<nsIUrlClassifierFeature>>& aFeatures,
+      nsIUrlClassifierFeatureCallback* aCallback) {
+    mCallback = aCallback;
+    mFeatures = aFeatures;
+  }
+
+  mozilla::ipc::IPCResult Recv__delete__(
+      nsTArray<URLClassifierLocalResult>&& aResults) override {
+    nsTArray<RefPtr<nsIUrlClassifierFeatureResult>> finalResults;
+
+    nsTArray<URLClassifierLocalResult> results = std::move(aResults);
+    for (URLClassifierLocalResult& result : results) {
+      for (nsIUrlClassifierFeature* feature : mFeatures) {
+        nsAutoCString name;
+        nsresult rv = feature->GetName(name);
+        if (NS_WARN_IF(NS_FAILED(rv))) {
+          continue;
+        }
+
+        if (result.featureName() != name) {
+          continue;
+        }
+
+        RefPtr<net::UrlClassifierFeatureResult> r =
+            new net::UrlClassifierFeatureResult(feature, result.matchingList());
+        finalResults.AppendElement(r);
+        break;
+      }
+    }
+
+    mCallback->OnClassifyComplete(finalResults);
+    return IPC_OK();
+  }
+
+ private:
+  nsCOMPtr<nsIUrlClassifierFeatureCallback> mCallback;
+  nsTArray<RefPtr<nsIUrlClassifierFeature>> mFeatures;
+};

 }  // namespace dom
 }  // namespace mozilla
--- a/dom/ipc/URLClassifierParent.cpp
+++ b/dom/ipc/URLClassifierParent.cpp
@ -6,6 +6,7 @@

 #include "URLClassifierParent.h"
 #include "nsComponentManagerUtils.h"
+#include "mozilla/net/UrlClassifierFeatureResult.h"
 #include "mozilla/Unused.h"

 using namespace mozilla;
@ -41,37 +42,122 @@ mozilla::ipc::IPCResult URLClassifierParent::StartClassify(
  return IPC_OK();
 }

-void URLClassifierParent::ActorDestroy(ActorDestroyReason aWhy) {
-  mIPCOpen = false;
-}
-
 /////////////////////////////////////////////////////////////////////
 // URLClassifierLocalParent.

-NS_IMPL_ISUPPORTS(URLClassifierLocalParent, nsIURIClassifierCallback)
+namespace {
+
+// This class implements a nsIUrlClassifierFeature on the parent side, starting
+// from an IPC data struct.
+class IPCFeature final : public nsIUrlClassifierFeature {
+ public:
+  NS_DECL_ISUPPORTS
+
+  explicit IPCFeature(const IPCURLClassifierFeature& aFeature)
+      : mIPCFeature(aFeature) {}
+
+  NS_IMETHOD
+  GetName(nsACString& aName) override {
+    aName = mIPCFeature.featureName();
+    return NS_OK;
+  }
+
+  NS_IMETHOD
+  GetTables(nsIUrlClassifierFeature::listType,
+            nsTArray<nsCString>& aTables) override {
+    aTables.AppendElements(mIPCFeature.tables());
+    return NS_OK;
+  }
+
+  NS_IMETHOD
+  HasTable(const nsACString& aTable, nsIUrlClassifierFeature::listType,
+           bool* aResult) override {
+    NS_ENSURE_ARG_POINTER(aResult);
+    *aResult = mIPCFeature.tables().Contains(aTable);
+    return NS_OK;
+  }
+
+  NS_IMETHOD
+  HasHostInPreferences(const nsACString& aHost,
+                       nsIUrlClassifierFeature::listType,
+                       nsACString& aTableName, bool* aResult) override {
+    NS_ENSURE_ARG_POINTER(aResult);
+    *aResult = false;
+    return NS_OK;
+  }
+
+  NS_IMETHOD
+  GetSkipHostList(nsACString& aList) override {
+    aList = mIPCFeature.skipHostList();
+    return NS_OK;
+  }
+
+  NS_IMETHOD
+  ProcessChannel(nsIChannel* aChannel, const nsACString& aList,
+                 bool* aShouldContinue) override {
+    NS_ENSURE_ARG_POINTER(aShouldContinue);
+    *aShouldContinue = true;
+
+    // Nothing to do here.
+    return NS_OK;
+  }
+
+ private:
+  ~IPCFeature() = default;
+
+  IPCURLClassifierFeature mIPCFeature;
+};
+
+NS_IMPL_ISUPPORTS(IPCFeature, nsIUrlClassifierFeature)
+
+}  // namespace
+
+NS_IMPL_ISUPPORTS(URLClassifierLocalParent, nsIUrlClassifierFeatureCallback)

 mozilla::ipc::IPCResult URLClassifierLocalParent::StartClassify(
-    nsIURI* aURI, const nsACString& aTables) {
+    nsIURI* aURI, const nsTArray<IPCURLClassifierFeature>& aFeatures) {
+  MOZ_ASSERT(aURI);
+
  nsresult rv = NS_OK;
  // Note that in safe mode, the URL classifier service isn't available, so we
  // should handle the service not being present gracefully.
  nsCOMPtr<nsIURIClassifier> uriClassifier =
      do_GetService(NS_URICLASSIFIERSERVICE_CONTRACTID, &rv);
-  if (NS_SUCCEEDED(rv)) {
-    MOZ_ASSERT(aURI);
-    rv = uriClassifier->AsyncClassifyLocalWithTables(
-        aURI, aTables, nsTArray<nsCString>(), nsTArray<nsCString>(), this);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    OnClassifyComplete(nsTArray<RefPtr<nsIUrlClassifierFeatureResult>>());
+    return IPC_OK();
  }
-  if (NS_FAILED(rv)) {
-    // Cannot do ClassificationFailed() because the child side
-    // is expecting a callback. Only the second parameter will
-    // be used, which is the "matched list". We treat "unable
-    // to classify" as "not on any list".
-    OnClassifyComplete(NS_OK, EmptyCString(), EmptyCString(), EmptyCString());
+
+  nsTArray<RefPtr<nsIUrlClassifierFeature>> features;
+  for (const IPCURLClassifierFeature& feature : aFeatures) {
+    features.AppendElement(new IPCFeature(feature));
  }
+
+  // Doesn't matter if we pass blacklist, whitelist or any other list.
+  // IPCFeature returns always the same values.
+  rv = uriClassifier->AsyncClassifyLocalWithFeatures(
+      aURI, features, nsIUrlClassifierFeature::blacklist, this);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    OnClassifyComplete(nsTArray<RefPtr<nsIUrlClassifierFeatureResult>>());
+    return IPC_OK();
+  }
+
  return IPC_OK();
 }

-void URLClassifierLocalParent::ActorDestroy(ActorDestroyReason aWhy) {
-  mIPCOpen = false;
+NS_IMETHODIMP
+URLClassifierLocalParent::OnClassifyComplete(
+    const nsTArray<RefPtr<nsIUrlClassifierFeatureResult>>& aResults) {
+  nsTArray<URLClassifierLocalResult> ipcResults;
+  for (nsIUrlClassifierFeatureResult* result : aResults) {
+    URLClassifierLocalResult* ipcResult = ipcResults.AppendElement();
+
+    net::UrlClassifierFeatureResult* r =
+        static_cast<net::UrlClassifierFeatureResult*>(result);
+    r->Feature()->GetName(ipcResult->featureName());
+    ipcResult->matchingList() = r->List();
+  }
+
+  Unused << Send__delete__(this, ipcResults);
+  return NS_OK;
 }
--- a/dom/ipc/URLClassifierParent.h
+++ b/dom/ipc/URLClassifierParent.h
@ -10,43 +10,16 @@
 #include "mozilla/dom/PURLClassifierParent.h"
 #include "mozilla/dom/PURLClassifierLocalParent.h"
 #include "nsIURIClassifier.h"
+#include "nsIUrlClassifierFeature.h"

 namespace mozilla {
 namespace dom {

-template <typename BaseProtocol>
-class URLClassifierParentBase : public nsIURIClassifierCallback,
-                                public BaseProtocol {
- public:
-  // nsIURIClassifierCallback.
-  NS_IMETHOD OnClassifyComplete(nsresult aErrorCode, const nsACString& aList,
-                                const nsACString& aProvider,
-                                const nsACString& aFullHash) override {
-    if (mIPCOpen) {
-      ClassifierInfo info = ClassifierInfo(
-          nsCString(aList), nsCString(aProvider), nsCString(aFullHash));
-      Unused << BaseProtocol::Send__delete__(this, info, aErrorCode);
-    }
-    return NS_OK;
-  }
-
-  // Custom.
-  void ClassificationFailed() {
-    if (mIPCOpen) {
-      Unused << BaseProtocol::Send__delete__(this, void_t(), NS_ERROR_FAILURE);
-    }
-  }
-
- protected:
-  ~URLClassifierParentBase() = default;
-  bool mIPCOpen = true;
-};
-
 //////////////////////////////////////////////////////////////
 // URLClassifierParent

-class URLClassifierParent
-    : public URLClassifierParentBase<PURLClassifierParent> {
+class URLClassifierParent : public nsIURIClassifierCallback,
+                            public PURLClassifierParent {
 public:
  NS_DECL_THREADSAFE_ISUPPORTS

@ -54,30 +27,58 @@ class URLClassifierParent
                                        bool aUseTrackingProtection,
                                        bool* aSuccess);

+  // nsIURIClassifierCallback.
+  NS_IMETHOD OnClassifyComplete(nsresult aErrorCode, const nsACString& aList,
+                                const nsACString& aProvider,
+                                const nsACString& aFullHash) override {
+    if (mIPCOpen) {
+      ClassifierInfo info = ClassifierInfo(
+          nsCString(aList), nsCString(aProvider), nsCString(aFullHash));
+      Unused << Send__delete__(this, info, aErrorCode);
+    }
+    return NS_OK;
+  }
+
+  // Custom.
+  void ClassificationFailed() {
+    if (mIPCOpen) {
+      Unused << Send__delete__(this, void_t(), NS_ERROR_FAILURE);
+    }
+  }
+
 private:
  ~URLClassifierParent() = default;

  // Override PURLClassifierParent::ActorDestroy. We seem to unable to
  // override from the base template class.
-  void ActorDestroy(ActorDestroyReason aWhy) override;
+  void ActorDestroy(ActorDestroyReason aWhy) override { mIPCOpen = false; }
+
+  bool mIPCOpen = true;
 };

 //////////////////////////////////////////////////////////////
 // URLClassifierLocalParent

-class URLClassifierLocalParent
-    : public URLClassifierParentBase<PURLClassifierLocalParent> {
+class URLClassifierLocalParent : public nsIUrlClassifierFeatureCallback,
+                                 public PURLClassifierLocalParent {
 public:
  NS_DECL_THREADSAFE_ISUPPORTS

-  mozilla::ipc::IPCResult StartClassify(nsIURI* aURI,
-                                        const nsACString& aTables);
+  mozilla::ipc::IPCResult StartClassify(
+      nsIURI* aURI, const nsTArray<IPCURLClassifierFeature>& aFeatureNames);
+
+  // nsIUrlClassifierFeatureCallback.
+  NS_IMETHOD
+  OnClassifyComplete(
+      const nsTArray<RefPtr<nsIUrlClassifierFeatureResult>>& aResults) override;

 private:
  ~URLClassifierLocalParent() = default;

-  // Override PURLClassifierParent::ActorDestroy.
-  void ActorDestroy(ActorDestroyReason aWhy) override;
+  // Override PURLClassifierLocalParent::ActorDestroy.
+  void ActorDestroy(ActorDestroyReason aWhy) override { mIPCOpen = false; }
+
+  bool mIPCOpen = true;
 };

 }  // namespace dom
--- a/dom/xhr/XMLHttpRequestMainThread.cpp
+++ b/dom/xhr/XMLHttpRequestMainThread.cpp
@ -2613,7 +2613,7 @@ nsresult XMLHttpRequestMainThread::InitiateFetch(

  // Check if this XHR is created from a tracking script.
  // If yes, lower the channel's priority.
-  if (nsContentUtils::IsLowerNetworkPriority()) {
+  if (StaticPrefs::privacy_trackingprotection_lower_network_priority()) {
    MaybeLowerChannelPriority();
  }

--- a/js/public/Class.h
+++ b/js/public/Class.h
@ -854,7 +854,7 @@ static const uint32_t JSCLASS_FOREGROUND_FINALIZE =
 // application.
 static const uint32_t JSCLASS_GLOBAL_APPLICATION_SLOTS = 5;
 static const uint32_t JSCLASS_GLOBAL_SLOT_COUNT =
-    JSCLASS_GLOBAL_APPLICATION_SLOTS + JSProto_LIMIT * 2 + 37;
+    JSCLASS_GLOBAL_APPLICATION_SLOTS + JSProto_LIMIT * 2 + 38;

 #define JSCLASS_GLOBAL_FLAGS_WITH_SLOTS(n) \
  (JSCLASS_IS_GLOBAL |                     \
--- a/js/public/Symbol.h
+++ b/js/public/Symbol.h
@ -62,7 +62,8 @@ extern JS_PUBLIC_API JSString* GetSymbolDescription(Handle<Symbol*> symbol);
  MACRO(toPrimitive)                         \
  MACRO(toStringTag)                         \
  MACRO(unscopables)                         \
-  MACRO(asyncIterator)
+  MACRO(asyncIterator)                       \
+  MACRO(matchAll)

 enum class SymbolCode : uint32_t {
 // There is one SymbolCode for each well-known symbol.
--- a/js/src/builtin/RegExp.cpp
+++ b/js/src/builtin/RegExp.cpp
@ -785,6 +785,9 @@ const JSFunctionSpec js::regexp_methods[] = {
    JS_SELF_HOSTED_FN("exec", "RegExp_prototype_Exec", 1, 0),
    JS_SELF_HOSTED_FN("test", "RegExpTest", 1, 0),
    JS_SELF_HOSTED_SYM_FN(match, "RegExpMatch", 1, 0),
+#ifdef NIGHTLY_BUILD
+    JS_SELF_HOSTED_SYM_FN(matchAll, "RegExpMatchAll", 1, 0),
+#endif
    JS_SELF_HOSTED_SYM_FN(replace, "RegExpReplace", 2, 0),
    JS_SELF_HOSTED_SYM_FN(search, "RegExpSearch", 1, 0),
    JS_SELF_HOSTED_SYM_FN(split, "RegExpSplit", 2, 0),
--- a/js/src/builtin/RegExp.js
+++ b/js/src/builtin/RegExp.js
@ -1075,3 +1075,236 @@ function RegExpSpecies() {
    return this;
 }
 _SetCanonicalName(RegExpSpecies, "get [Symbol.species]");
+
+function IsRegExpMatchAllOptimizable(rx, C) {
+    if (!IsRegExpObject(rx))
+        return false;
+
+    var RegExpCtor = GetBuiltinConstructor("RegExp");
+    if (C !== RegExpCtor)
+        return false;
+
+    var RegExpProto = RegExpCtor.prototype;
+    return RegExpPrototypeOptimizable(RegExpProto) &&
+           RegExpInstanceOptimizable(rx, RegExpProto);
+}
+
+// String.prototype.matchAll proposal.
+//
+// RegExp.prototype [ @@matchAll ] ( string )
+function RegExpMatchAll(string) {
+    // Step 1.
+    var rx = this;
+
+    // Step 2.
+    if (!IsObject(rx))
+        ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, rx === null ? "null" : typeof rx);
+
+    // Step 3.
+    var str = ToString(string);
+
+    // Step 4.
+    var C = SpeciesConstructor(rx, GetBuiltinConstructor("RegExp"));
+
+    var source, flags, matcher, lastIndex;
+    if (IsRegExpMatchAllOptimizable(rx, C)) {
+        // Step 5, 9-12.
+        source = UnsafeGetStringFromReservedSlot(rx, REGEXP_SOURCE_SLOT);
+        flags = UnsafeGetInt32FromReservedSlot(rx, REGEXP_FLAGS_SLOT);
+
+        // Step 6.
+        matcher = rx;
+
+        // Step 7.
+        lastIndex = ToLength(rx.lastIndex);
+
+        // Step 8 (not applicable for the optimized path).
+    } else {
+        // Step 5.
+        source = "";
+        flags = ToString(rx.flags);
+
+        // Step 6.
+        matcher = new C(rx, flags);
+
+        // Steps 7-8.
+        matcher.lastIndex = ToLength(rx.lastIndex);
+
+        // Steps 9-12.
+        flags = (callFunction(std_String_includes, flags, "g") ? REGEXP_GLOBAL_FLAG : 0) |
+                (callFunction(std_String_includes, flags, "u") ? REGEXP_UNICODE_FLAG : 0);
+
+        // Take the non-optimized path.
+        lastIndex = REGEXP_STRING_ITERATOR_LASTINDEX_SLOW;
+    }
+
+    // Step 13.
+    return CreateRegExpStringIterator(matcher, str, source, flags, lastIndex);
+}
+
+// String.prototype.matchAll proposal.
+//
+// CreateRegExpStringIterator ( R, S, global, fullUnicode )
+function CreateRegExpStringIterator(regexp, string, source, flags, lastIndex) {
+    // Step 1.
+    assert(typeof string === "string", "|string| is a string value");
+
+    // Steps 2-3.
+    assert(typeof flags === "number", "|flags| is a number value");
+
+    assert(typeof source === "string", "|source| is a string value");
+    assert(typeof lastIndex === "number", "|lastIndex| is a number value");
+
+    // Steps 4-9.
+    var iterator = NewRegExpStringIterator();
+    UnsafeSetReservedSlot(iterator, REGEXP_STRING_ITERATOR_REGEXP_SLOT, regexp);
+    UnsafeSetReservedSlot(iterator, REGEXP_STRING_ITERATOR_STRING_SLOT, string);
+    UnsafeSetReservedSlot(iterator, REGEXP_STRING_ITERATOR_SOURCE_SLOT, source);
+    UnsafeSetReservedSlot(iterator, REGEXP_STRING_ITERATOR_FLAGS_SLOT, flags | 0);
+    UnsafeSetReservedSlot(iterator, REGEXP_STRING_ITERATOR_LASTINDEX_SLOT, lastIndex);
+
+    // Step 10.
+    return iterator;
+}
+
+function IsRegExpStringIteratorNextOptimizable() {
+    var RegExpProto = GetBuiltinPrototype("RegExp");
+    // If RegExpPrototypeOptimizable succeeds, `RegExpProto.exec` is
+    // guaranteed to be a data property.
+    return RegExpPrototypeOptimizable(RegExpProto) &&
+           RegExpProto.exec === RegExp_prototype_Exec;
+}
+
+// String.prototype.matchAll proposal.
+//
+// %RegExpStringIteratorPrototype%.next ( )
+function RegExpStringIteratorNext() {
+    // Steps 1-3.
+    var obj;
+    if (!IsObject(this) || (obj = GuardToRegExpStringIterator(this)) === null) {
+        return callFunction(CallRegExpStringIteratorMethodIfWrapped, this,
+                            "RegExpStringIteratorNext");
+    }
+
+    var result = { value: undefined, done: false };
+
+    // Step 4.
+    var lastIndex = UnsafeGetReservedSlot(obj, REGEXP_STRING_ITERATOR_LASTINDEX_SLOT);
+    if (lastIndex === REGEXP_STRING_ITERATOR_LASTINDEX_DONE) {
+        result.done = true;
+        return result;
+    }
+
+    // Step 5.
+    var regexp = UnsafeGetObjectFromReservedSlot(obj, REGEXP_STRING_ITERATOR_REGEXP_SLOT);
+
+    // Step 6.
+    var string = UnsafeGetStringFromReservedSlot(obj, REGEXP_STRING_ITERATOR_STRING_SLOT);
+
+    // Steps 7-8.
+    var flags = UnsafeGetInt32FromReservedSlot(obj, REGEXP_STRING_ITERATOR_FLAGS_SLOT);
+    var global = !!(flags & REGEXP_GLOBAL_FLAG);
+    var fullUnicode = !!(flags & REGEXP_UNICODE_FLAG);
+
+    if (lastIndex >= 0) {
+        assert(IsRegExpObject(regexp), "|regexp| is a RegExp object");
+
+        var source = UnsafeGetStringFromReservedSlot(obj, REGEXP_STRING_ITERATOR_SOURCE_SLOT);
+        if (IsRegExpStringIteratorNextOptimizable() &&
+            UnsafeGetStringFromReservedSlot(regexp, REGEXP_SOURCE_SLOT) === source &&
+            UnsafeGetInt32FromReservedSlot(regexp, REGEXP_FLAGS_SLOT) === flags)
+        {
+            // Step 9 (Inlined RegExpBuiltinExec).
+            var globalOrSticky = !!(flags & (REGEXP_GLOBAL_FLAG | REGEXP_STICKY_FLAG));
+            if (!globalOrSticky)
+                lastIndex = 0;
+
+            var match = (lastIndex <= string.length)
+                        ? RegExpMatcher(regexp, string, lastIndex)
+                        : null;
+
+            // Step 10.
+            if (match === null) {
+                // Step 10.a.
+                UnsafeSetReservedSlot(obj, REGEXP_STRING_ITERATOR_LASTINDEX_SLOT,
+                                      REGEXP_STRING_ITERATOR_LASTINDEX_DONE);
+
+                // Step 10.b.
+                result.done = true;
+                return result;
+            }
+
+            // Step 11.a.
+            if (global) {
+                // Step 11.a.i.
+                var matchLength = match[0].length;
+                lastIndex = match.index + matchLength;
+
+                // Step 11.a.ii.
+                if (matchLength === 0) {
+                    // Steps 11.a.ii.1-3.
+                    lastIndex = fullUnicode ? AdvanceStringIndex(string, lastIndex) : lastIndex + 1;
+                }
+
+                UnsafeSetReservedSlot(obj, REGEXP_STRING_ITERATOR_LASTINDEX_SLOT, lastIndex);
+            } else {
+                // Step 11.b.i.
+                UnsafeSetReservedSlot(obj, REGEXP_STRING_ITERATOR_LASTINDEX_SLOT,
+                                      REGEXP_STRING_ITERATOR_LASTINDEX_DONE);
+            }
+
+            // Steps 11.a.iii and 11.b.ii.
+            result.value = match;
+            return result;
+        }
+
+        // Reify the RegExp object.
+        regexp = regexp_construct_raw_flags(source, flags);
+        regexp.lastIndex = lastIndex;
+        UnsafeSetReservedSlot(obj, REGEXP_STRING_ITERATOR_REGEXP_SLOT, regexp);
+
+        // Mark the iterator as no longer optimizable.
+        UnsafeSetReservedSlot(obj, REGEXP_STRING_ITERATOR_LASTINDEX_SLOT,
+                              REGEXP_STRING_ITERATOR_LASTINDEX_SLOW);
+    }
+
+    // Step 9.
+    var match = RegExpExec(regexp, string, false);
+
+    // Step 10.
+    if (match === null) {
+        // Step 10.a.
+        UnsafeSetReservedSlot(obj, REGEXP_STRING_ITERATOR_LASTINDEX_SLOT,
+                              REGEXP_STRING_ITERATOR_LASTINDEX_DONE);
+
+        // Step 10.b.
+        result.done = true;
+        return result;
+    }
+
+    // Step 11.a.
+    if (global) {
+        // Step 11.a.i.
+        var matchStr = ToString(match[0]);
+
+        // Step 11.a.ii.
+        if (matchStr.length === 0) {
+            // Step 11.a.ii.1.
+            var thisIndex = ToLength(regexp.lastIndex);
+
+            // Step 11.a.ii.2.
+            var nextIndex = fullUnicode ? AdvanceStringIndex(string, thisIndex) : thisIndex + 1;
+
+            // Step 11.a.ii.3.
+            regexp.lastIndex = nextIndex;
+        }
+    } else {
+        // Step 11.b.i.
+        UnsafeSetReservedSlot(obj, REGEXP_STRING_ITERATOR_LASTINDEX_SLOT,
+                              REGEXP_STRING_ITERATOR_LASTINDEX_DONE);
+    }
+
+    // Steps 11.a.iii and 11.b.ii.
+    result.value = match;
+    return result;
+}
--- a/js/src/builtin/SelfHostingDefines.h
+++ b/js/src/builtin/SelfHostingDefines.h
@ -96,6 +96,15 @@
 #define REGEXP_STICKY_FLAG 0x08
 #define REGEXP_UNICODE_FLAG 0x10

+#define REGEXP_STRING_ITERATOR_REGEXP_SLOT 0
+#define REGEXP_STRING_ITERATOR_STRING_SLOT 1
+#define REGEXP_STRING_ITERATOR_SOURCE_SLOT 2
+#define REGEXP_STRING_ITERATOR_FLAGS_SLOT 3
+#define REGEXP_STRING_ITERATOR_LASTINDEX_SLOT 4
+
+#define REGEXP_STRING_ITERATOR_LASTINDEX_DONE -1
+#define REGEXP_STRING_ITERATOR_LASTINDEX_SLOW -2
+
 #define MODULE_OBJECT_ENVIRONMENT_SLOT 1
 #define MODULE_OBJECT_STATUS_SLOT 3
 #define MODULE_OBJECT_EVALUATION_ERROR_SLOT 4
--- a/js/src/builtin/String.cpp
+++ b/js/src/builtin/String.cpp
@ -3376,6 +3376,9 @@ static const JSFunctionSpec string_methods[] = {

    /* Perl-ish methods (search is actually Python-esque). */
    JS_SELF_HOSTED_FN("match", "String_match", 1, 0),
+#ifdef NIGHTLY_BUILD
+    JS_SELF_HOSTED_FN("matchAll", "String_matchAll", 1, 0),
+#endif
    JS_SELF_HOSTED_FN("search", "String_search", 1, 0),
    JS_SELF_HOSTED_FN("replace", "String_replace", 2, 0),
    JS_SELF_HOSTED_FN("split", "String_split", 2, 0),
--- a/js/src/builtin/String.js
+++ b/js/src/builtin/String.js
@ -64,6 +64,33 @@ function String_generic_match(thisValue, regexp) {
    return callFunction(String_match, thisValue, regexp);
 }

+// String.prototype.matchAll proposal.
+//
+// String.prototype.matchAll ( regexp )
+function String_matchAll(regexp) {
+    // Step 1.
+    RequireObjectCoercible(this);
+
+    // Step 2.
+    if (regexp !== undefined && regexp !== null) {
+        // Step 2.a.
+        var matcher = GetMethod(regexp, std_matchAll);
+
+        // Step 2.b.
+        if (matcher !== undefined)
+            return callContentFunction(matcher, regexp, this);
+    }
+
+    // Step 3.
+    var string = ToString(this);
+
+    // Step 4.
+    var rx = RegExpCreate(regexp, "g");
+
+    // Step 5.
+    return callContentFunction(GetMethod(rx, std_matchAll), rx, string);
+}
+
 /**
 * A helper function implementing the logic for both String.prototype.padStart
 * and String.prototype.padEnd as described in ES7 Draft March 29, 2016
--- a/js/src/builtin/Symbol.cpp
+++ b/js/src/builtin/Symbol.cpp
@ -64,6 +64,11 @@ JSObject* SymbolObject::initClass(JSContext* cx, Handle<GlobalObject*> global,
    unsigned attrs = JSPROP_READONLY | JSPROP_PERMANENT;
    WellKnownSymbols* wks = cx->runtime()->wellKnownSymbols;
    for (size_t i = 0; i < JS::WellKnownSymbolLimit; i++) {
+#ifndef NIGHTLY_BUILD
+      if (i == SymbolCode::matchAll) {
+        continue;
+      }
+#endif
      value.setSymbol(wks->get(i));
      if (!NativeDefineDataProperty(cx, ctor, names[i], value, attrs)) {
        return nullptr;
--- a/js/src/frontend/BytecodeEmitter.cpp
+++ b/js/src/frontend/BytecodeEmitter.cpp
@ -16,6 +16,7 @@
 #include "mozilla/Maybe.h"
 #include "mozilla/PodOperations.h"
 #include "mozilla/ReverseIterator.h"
+#include "mozilla/Sprintf.h"

 #include <string.h>

--- a/js/src/gc/Barrier.h
+++ b/js/src/gc/Barrier.h
@ -50,9 +50,9 @@
 * 1. ... JS work, which leads to a request to do GC ...
 * 2. [first GC slice, which performs all root marking and (maybe) more marking]
 * 3. ... more JS work is allowed to run ...
- * 4. [GC mark slice, which runs entirely in GCRuntime::markUntilBudgetExhaused]
+ * 4. [GC mark slice, which runs entirely in GCRuntime::markUntilBudgetExhausted]
 * 5. ... more JS work ...
- * 6. [GC mark slice, which runs entirely in GCRuntime::markUntilBudgetExhaused]
+ * 6. [GC mark slice, which runs entirely in GCRuntime::markUntilBudgetExhausted]
 * 7. ... more JS work ...
 * 8. [GC marking finishes; sweeping done non-incrementally; GC is done]
 * 9. ... JS continues uninterrupted now that GC is finishes ...
--- a/js/src/gc/GC.cpp
+++ b/js/src/gc/GC.cpp
@ -5805,7 +5805,7 @@ bool ArenaLists::foregroundFinalize(FreeOp* fop, AllocKind thingKind,
  return true;
 }

-IncrementalProgress GCRuntime::markUntilBudgetExhaused(
+IncrementalProgress GCRuntime::markUntilBudgetExhausted(
    SliceBudget& sliceBudget, gcstats::PhaseKind phase) {
  // Marked GC things may vary between recording and replaying, so marking
  // and sweeping should not perform any recorded events.
@ -5813,12 +5813,12 @@ IncrementalProgress GCRuntime::markUntilBudgetExhaused(

  /* Run a marking slice and return whether the stack is now empty. */
  gcstats::AutoPhase ap(stats(), phase);
-  return marker.markUntilBudgetExhaused(sliceBudget) ? Finished : NotFinished;
+  return marker.markUntilBudgetExhausted(sliceBudget) ? Finished : NotFinished;
 }

 void GCRuntime::drainMarkStack() {
  auto unlimited = SliceBudget::unlimited();
-  MOZ_RELEASE_ASSERT(marker.markUntilBudgetExhaused(unlimited));
+  MOZ_RELEASE_ASSERT(marker.markUntilBudgetExhausted(unlimited));
 }

 static void SweepThing(Shape* shape) {
@ -6482,7 +6482,7 @@ IncrementalProgress GCRuntime::performSweepActions(SliceBudget& budget) {
  if (initialState != State::Sweep) {
    MOZ_ASSERT(marker.isDrained());
  } else {
-    if (markUntilBudgetExhaused(budget, gcstats::PhaseKind::SWEEP_MARK) ==
+    if (markUntilBudgetExhausted(budget, gcstats::PhaseKind::SWEEP_MARK) ==
        NotFinished) {
      return NotFinished;
    }
@ -6957,7 +6957,7 @@ void GCRuntime::incrementalSlice(
    case State::Mark:
      AutoGCRooter::traceAllWrappers(rt->mainContextFromOwnThread(), &marker);

-      if (markUntilBudgetExhaused(budget, gcstats::PhaseKind::MARK) ==
+      if (markUntilBudgetExhausted(budget, gcstats::PhaseKind::MARK) ==
          NotFinished) {
        break;
      }
--- a/js/src/gc/GCMarker.h
+++ b/js/src/gc/GCMarker.h
@ -286,7 +286,7 @@ class GCMarker : public JSTracer {

  bool isDrained() { return isMarkStackEmpty() && !unmarkedArenaStackTop; }

-  MOZ_MUST_USE bool markUntilBudgetExhaused(SliceBudget& budget);
+  MOZ_MUST_USE bool markUntilBudgetExhausted(SliceBudget& budget);

  void setGCMode(JSGCMode mode) { stack.setGCMode(mode); }

--- a/js/src/gc/GCRuntime.h
+++ b/js/src/gc/GCRuntime.h
@ -618,8 +618,8 @@ class GCRuntime {
  void traceRuntimeCommon(JSTracer* trc, TraceOrMarkRuntime traceOrMark);
  void maybeDoCycleCollection();
  void markCompartments();
-  IncrementalProgress markUntilBudgetExhaused(SliceBudget& sliceBudget,
-                                              gcstats::PhaseKind phase);
+  IncrementalProgress markUntilBudgetExhausted(SliceBudget& sliceBudget,
+                                               gcstats::PhaseKind phase);
  void drainMarkStack();
  template <class ZoneIterT>
  void markWeakReferences(gcstats::PhaseKind phase);
--- a/js/src/gc/Marking.cpp
+++ b/js/src/gc/Marking.cpp
@ -1571,7 +1571,7 @@ static void VisitTraceList(F f, const int32_t* traceList, uint8_t* memory,

 /*** Mark-stack Marking *****************************************************/

-bool GCMarker::markUntilBudgetExhaused(SliceBudget& budget) {
+bool GCMarker::markUntilBudgetExhausted(SliceBudget& budget) {
 #ifdef DEBUG
  MOZ_ASSERT(!strictCompartmentChecking);
  strictCompartmentChecking = true;
--- a/js/src/jit/BaselineIC.cpp
+++ b/js/src/jit/BaselineIC.cpp
@ -3381,6 +3381,11 @@ static bool GetTemplateObjectForNative(JSContext* cx, HandleFunction target,
    return !!res;
  }

+  if (native == js::intrinsic_NewRegExpStringIterator) {
+    res.set(NewRegExpStringIteratorObject(cx, TenuredObject));
+    return !!res;
+  }
+
  return true;
 }

--- a/js/src/jit/CodeGenerator.cpp
+++ b/js/src/jit/CodeGenerator.cpp
@ -6212,6 +6212,13 @@ static const VMFunction NewStringIteratorObjectInfo =
    FunctionInfo<NewStringIteratorObjectFn>(NewStringIteratorObject,
                                            "NewStringIteratorObject");

+typedef RegExpStringIteratorObject* (*NewRegExpStringIteratorObjectFn)(
+    JSContext*, NewObjectKind);
+
+static const VMFunction NewRegExpStringIteratorObjectInfo =
+    FunctionInfo<NewRegExpStringIteratorObjectFn>(
+        NewRegExpStringIteratorObject, "NewRegExpStringIteratorObject");
+
 void CodeGenerator::visitNewIterator(LNewIterator* lir) {
  Register objReg = ToRegister(lir->output());
  Register tempReg = ToRegister(lir->temp());
@ -6226,6 +6233,10 @@ void CodeGenerator::visitNewIterator(LNewIterator* lir) {
      ool = oolCallVM(NewStringIteratorObjectInfo, lir,
                      ArgList(Imm32(GenericObject)), StoreRegisterTo(objReg));
      break;
+    case MNewIterator::RegExpStringIterator:
+      ool = oolCallVM(NewRegExpStringIteratorObjectInfo, lir,
+                      ArgList(Imm32(GenericObject)), StoreRegisterTo(objReg));
+      break;
    default:
      MOZ_CRASH("unexpected iterator type");
  }
--- a/js/src/jit/InlinableNatives.h
+++ b/js/src/jit/InlinableNatives.h
@ -125,6 +125,7 @@
  _(IntrinsicGuardToMapIterator)                   \
  _(IntrinsicGuardToSetIterator)                   \
  _(IntrinsicGuardToStringIterator)                \
+  _(IntrinsicGuardToRegExpStringIterator)          \
                                                   \
  _(IntrinsicGuardToMapObject)                     \
  _(IntrinsicGetNextMapEntryForIterator)           \
@ -134,6 +135,7 @@
                                                   \
  _(IntrinsicNewArrayIterator)                     \
  _(IntrinsicNewStringIterator)                    \
+  _(IntrinsicNewRegExpStringIterator)              \
                                                   \
  _(IntrinsicGuardToArrayBuffer)                   \
  _(IntrinsicArrayBufferByteLength)                \
--- a/js/src/jit/MCallOptimize.cpp
+++ b/js/src/jit/MCallOptimize.cpp
@ -237,6 +237,8 @@ IonBuilder::InliningResult IonBuilder::inlineNativeCall(CallInfo& callInfo,
      return inlineRegExpInstanceOptimizable(callInfo);
    case InlinableNative::GetFirstDollarIndex:
      return inlineGetFirstDollarIndex(callInfo);
+    case InlinableNative::IntrinsicNewRegExpStringIterator:
+      return inlineNewIterator(callInfo, MNewIterator::RegExpStringIterator);

    // String natives.
    case InlinableNative::String:
@ -321,6 +323,8 @@ IonBuilder::InliningResult IonBuilder::inlineNativeCall(CallInfo& callInfo,
      return inlineGuardToClass(callInfo, &SetIteratorObject::class_);
    case InlinableNative::IntrinsicGuardToStringIterator:
      return inlineGuardToClass(callInfo, &StringIteratorObject::class_);
+    case InlinableNative::IntrinsicGuardToRegExpStringIterator:
+      return inlineGuardToClass(callInfo, &RegExpStringIteratorObject::class_);
    case InlinableNative::IntrinsicObjectHasPrototype:
      return inlineObjectHasPrototype(callInfo);
    case InlinableNative::IntrinsicFinishBoundFunctionInit:
@ -1078,6 +1082,12 @@ IonBuilder::InliningResult IonBuilder::inlineNewIterator(
          pc, js::intrinsic_NewStringIterator);
      MOZ_ASSERT_IF(templateObject, templateObject->is<StringIteratorObject>());
      break;
+    case MNewIterator::RegExpStringIterator:
+      templateObject = inspector->getTemplateObjectForNative(
+          pc, js::intrinsic_NewRegExpStringIterator);
+      MOZ_ASSERT_IF(templateObject,
+                    templateObject->is<RegExpStringIteratorObject>());
+      break;
  }

  if (!templateObject) {
--- a/js/src/jit/MIR.h
+++ b/js/src/jit/MIR.h
@ -2230,6 +2230,7 @@ class MNewIterator : public MUnaryInstruction, public NoTypePolicy::Data {
  enum Type {
    ArrayIterator,
    StringIterator,
+    RegExpStringIterator,
  };

 private:
--- a/js/src/jit/Recover.cpp
+++ b/js/src/jit/Recover.cpp
@ -1301,6 +1301,9 @@ bool RNewIterator::recover(JSContext* cx, SnapshotIterator& iter) const {
    case MNewIterator::StringIterator:
      resultObject = NewStringIteratorObject(cx);
      break;
+    case MNewIterator::RegExpStringIterator:
+      resultObject = NewRegExpStringIteratorObject(cx);
+      break;
  }

  if (!resultObject) {
--- a/js/src/jit/VMFunctions.h
+++ b/js/src/jit/VMFunctions.h
@ -428,6 +428,10 @@ struct TypeToDataType<StringIteratorObject*> {
  static const DataType result = Type_Object;
 };
 template <>
+struct TypeToDataType<RegExpStringIteratorObject*> {
+  static const DataType result = Type_Object;
+};
+template <>
 struct TypeToDataType<JSString*> {
  static const DataType result = Type_Object;
 };
--- a/js/src/jit/arm64/CodeGenerator-arm64.cpp
+++ b/js/src/jit/arm64/CodeGenerator-arm64.cpp
@ -385,13 +385,18 @@ void CodeGenerator::visitDivI(LDivI* ins) {
  // Handle division by zero.
  if (mir->canBeDivideByZero()) {
    masm.test32(rhs, rhs);
-    // TODO: x64 has an additional mir->canTruncateInfinities() handler
-    // TODO: to avoid taking a bailout.
    if (mir->trapOnError()) {
      Label nonZero;
      masm.j(Assembler::NonZero, &nonZero);
      masm.wasmTrap(wasm::Trap::IntegerDivideByZero, mir->bytecodeOffset());
      masm.bind(&nonZero);
+    } else if (mir->canTruncateInfinities()) {
+      // Truncated division by zero is zero: (Infinity|0 = 0).
+      Label nonZero;
+      masm.j(Assembler::NonZero, &nonZero);
+      masm.Mov(output32, wzr);
+      masm.jump(&done);
+      masm.bind(&nonZero);
    } else {
      MOZ_ASSERT(mir->fallible());
      bailoutIf(Assembler::Zero, ins->snapshot());
--- a/js/src/jit/arm64/Lowering-arm64.cpp
+++ b/js/src/jit/arm64/Lowering-arm64.cpp
@ -351,11 +351,19 @@ void LIRGenerator::visitWasmAtomicBinopHeap(MWasmAtomicBinopHeap* ins) {
 }

 void LIRGeneratorARM64::lowerTruncateDToInt32(MTruncateToInt32* ins) {
-  MOZ_CRASH("lowerTruncateDToInt32");
+  MDefinition* opd = ins->input();
+  MOZ_ASSERT(opd->type() == MIRType::Double);
+  define(new (alloc())
+             LTruncateDToInt32(useRegister(opd), LDefinition::BogusTemp()),
+         ins);
 }

 void LIRGeneratorARM64::lowerTruncateFToInt32(MTruncateToInt32* ins) {
-  MOZ_CRASH("lowerTruncateFToInt32");
+  MDefinition* opd = ins->input();
+  MOZ_ASSERT(opd->type() == MIRType::Float32);
+  define(new (alloc())
+             LTruncateFToInt32(useRegister(opd), LDefinition::BogusTemp()),
+         ins);
 }

 void LIRGenerator::visitAtomicTypedArrayElementBinop(
--- a/js/src/tests/non262/RegExp/prototype.js
+++ b/js/src/tests/non262/RegExp/prototype.js
@ -1,10 +1,13 @@
 const t = RegExp.prototype;

-const properties = "toSource,toString,compile,exec,test," +
-                   "flags,global,ignoreCase,multiline,source,sticky,unicode," +
-                   "constructor," +
-                   "Symbol(Symbol.match),Symbol(Symbol.replace),Symbol(Symbol.search),Symbol(Symbol.split)";
-assertEq(Reflect.ownKeys(t).map(String).toString(), properties);
+let properties = "toSource,toString,compile,exec,test," +
+                 "flags,global,ignoreCase,multiline,source,sticky,unicode," +
+                 "constructor," +
+                 "Symbol(Symbol.match),Symbol(Symbol.replace),Symbol(Symbol.search),Symbol(Symbol.split)";
+if (Symbol.matchAll) {
+    properties += ",Symbol(Symbol.matchAll)";
+}
+assertEqArray(Reflect.ownKeys(t).map(String).sort(), properties.split(",").sort());


 // Invoking getters on the prototype should not throw
--- a/js/src/tests/non262/String/matchAll.js
+++ b/js/src/tests/non262/String/matchAll.js
@ -0,0 +1,290 @@
+// |reftest| skip-if(!String.prototype.matchAll)
+
+// Basic surface tests.
+
+assertEq(typeof String.prototype.matchAll, "function");
+assertEq(String.prototype.matchAll.name, "matchAll");
+assertEq(String.prototype.matchAll.length, 1);
+
+assertEq(typeof Symbol.matchAll, "symbol");
+
+assertEq(typeof RegExp.prototype[Symbol.matchAll], "function");
+assertEq(RegExp.prototype[Symbol.matchAll].name, "[Symbol.matchAll]");
+assertEq(RegExp.prototype[Symbol.matchAll].length, 1);
+
+const IteratorPrototype = Object.getPrototypeOf(Object.getPrototypeOf([][Symbol.iterator]()));
+const RegExpStringIteratorPrototype = Object.getPrototypeOf("".matchAll(""));
+
+assertEq(Object.getPrototypeOf(RegExpStringIteratorPrototype), IteratorPrototype);
+
+assertEq(typeof RegExpStringIteratorPrototype.next, "function");
+assertEq(RegExpStringIteratorPrototype.next.name, "next");
+assertEq(RegExpStringIteratorPrototype.next.length, 0);
+
+assertEq(RegExpStringIteratorPrototype[Symbol.toStringTag], "RegExp String Iterator");
+
+
+// Basic functional tests.
+
+const RegExp_prototype_exec = RegExp.prototype.exec;
+const RegExp_prototype_match = RegExp.prototype[Symbol.match];
+
+function assertEqIterMatchResult(actual, expected) {
+    assertEq(actual.done, expected.done);
+    if (actual.value === undefined || expected.value === undefined) {
+        assertEq(actual.value, expected.value);
+    } else {
+        assertEqArray(actual.value, expected.value);
+        assertEq(actual.value.input, expected.value.input);
+        assertEq(actual.value.index, expected.value.index);
+    }
+}
+
+function assertEqMatchResults(actual, expected) {
+    var actualIter = actual[Symbol.iterator]();
+    var expectedIter = expected[Symbol.iterator]();
+    while (true) {
+        var actualResult = actualIter.next();
+        var expectedResult = expectedIter.next();
+        assertEqIterMatchResult(actualResult, expectedResult);
+        if (actualResult.done && expectedResult.done)
+            return;
+    }
+}
+
+function* matchResults(string, regexp, lastIndex = 0) {
+    regexp.lastIndex = lastIndex;
+    while (true) {
+        var match = Reflect.apply(RegExp_prototype_exec, regexp, [string]);
+        if (match === null)
+            return;
+        yield match;
+        if (!regexp.global)
+            return;
+    }
+}
+
+assertEqMatchResults("ababcca".matchAll(/a/), matchResults("ababcca", /a/));
+assertEqMatchResults("ababcca".matchAll(/a/g), matchResults("ababcca", /a/g));
+assertEqMatchResults("ababcca".matchAll("a"), matchResults("ababcca", /a/g));
+
+
+// Cross-compartment tests.
+
+{
+    let otherGlobal = newGlobal();
+
+    let iterator = otherGlobal.eval(`"ababcca".matchAll(/a/)`);
+    let expected = matchResults("ababcca", /a/);
+
+    assertEqIterMatchResult(RegExpStringIteratorPrototype.next.call(iterator),
+                            expected.next());
+}
+
+
+// Optimization tests.
+//
+// The optimized path for MatchAllIterator reuses the input RegExp to avoid
+// extra RegExp allocations. To make this optimization undetectable from
+// user code, we need to ensure that:
+// 1. Modifications to the input RegExp through RegExp.prototype.compile are
+//    detected and properly handled (= ignored).
+// 2. The RegExpStringIterator doesn't modify the input RegExp, for example
+//    by updating the lastIndex property.
+// 3. Guards against modifications of built-in RegExp.prototype are installed.
+
+// Recompile RegExp (source) before first match.
+{
+    let regexp = /a+/;
+    let iterator = "aabb".matchAll(regexp);
+
+    regexp.compile("b+");
+    assertEqMatchResults(iterator, matchResults("aabb", /a+/));
+}
+
+// Recompile RegExp (flags) before first match.
+{
+    let regexp = /a+/i;
+    let iterator = "aAbb".matchAll(regexp);
+
+    regexp.compile("a+", "");
+    assertEqMatchResults(iterator, matchResults("aAbb", /a+/i));
+}
+
+// Recompile RegExp (source) after first match.
+{
+    let regexp = /a+/g;
+    let iterator = "aabbaa".matchAll(regexp);
+    let expected = matchResults("aabbaa", /a+/g);
+
+    assertEqIterMatchResult(iterator.next(), expected.next());
+    regexp.compile("b+");
+    assertEqIterMatchResult(iterator.next(), expected.next());
+}
+
+// Recompile RegExp (flags) after first match.
+{
+    let regexp = /a+/g;
+    let iterator = "aabbAA".matchAll(regexp);
+    let expected = matchResults("aabbAA", /a+/g);
+
+    assertEqIterMatchResult(iterator.next(), expected.next());
+    regexp.compile("a+", "i");
+    assertEqIterMatchResult(iterator.next(), expected.next());
+}
+
+// lastIndex property of input RegExp not modified when optimized path used.
+{
+    let regexp = /a+/g;
+    regexp.lastIndex = 1;
+    let iterator = "aabbaa".matchAll(regexp);
+    let expected = matchResults("aabbaa", /a+/g, 1);
+
+    assertEq(regexp.lastIndex, 1);
+    assertEqIterMatchResult(iterator.next(), expected.next());
+    assertEq(regexp.lastIndex, 1);
+    assertEqIterMatchResult(iterator.next(), expected.next());
+    assertEq(regexp.lastIndex, 1);
+}
+
+// Modifications to lastIndex property of input RegExp ignored when optimized path used.
+{
+    let regexp = /a+/g;
+    let iterator = "aabbaa".matchAll(regexp);
+    regexp.lastIndex = 1;
+    let expected = matchResults("aabbaa", /a+/g);
+
+    assertEq(regexp.lastIndex, 1);
+    assertEqIterMatchResult(iterator.next(), expected.next());
+    assertEq(regexp.lastIndex, 1);
+    assertEqIterMatchResult(iterator.next(), expected.next());
+    assertEq(regexp.lastIndex, 1);
+}
+
+// RegExp.prototype[Symbol.match] is modified to a getter, ensure this getter
+// is called exactly once.
+try {
+    let regexp = /a+/g;
+
+    let callCount = 0;
+    Object.defineProperty(RegExp.prototype, Symbol.match, {
+        get() {
+            assertEq(this, regexp);
+            callCount++;
+            return RegExp_prototype_match;
+        }
+    });
+    let iterator = "aabbaa".matchAll(regexp);
+    assertEq(callCount, 1);
+} finally {
+    // Restore optimizable RegExp.prototype shape.
+    Object.defineProperty(RegExp.prototype, Symbol.match, {
+        value: RegExp_prototype_match,
+        writable: true, enumerable: false, configurable: true
+    });
+}
+
+// RegExp.prototype.exec is changed to a getter.
+try {
+    let regexp = /a+/g;
+    let iterator = "aabbaa".matchAll(regexp);
+    let lastIndices = [0, 2, 6][Symbol.iterator]();
+
+    let iteratorRegExp = null;
+    let callCount = 0;
+    Object.defineProperty(RegExp.prototype, "exec", {
+        get() {
+            callCount++;
+
+            if (iteratorRegExp === null)
+                iteratorRegExp = this;
+
+            assertEq(this === regexp, false);
+            assertEq(this, iteratorRegExp);
+            assertEq(this.source, regexp.source);
+            assertEq(this.flags, regexp.flags);
+            assertEq(this.lastIndex, lastIndices.next().value);
+            return RegExp_prototype_exec;
+        }
+    });
+
+    assertEqMatchResults(iterator, matchResults("aabbaa", /a+/g));
+    assertEq(callCount, 3);
+} finally {
+    // Restore optimizable RegExp.prototype shape.
+    Object.defineProperty(RegExp.prototype, "exec", {
+        value: RegExp_prototype_exec,
+        writable: true, enumerable: false, configurable: true
+    });
+}
+
+// RegExp.prototype.exec is changed to a value property.
+try {
+    let regexp = /a+/g;
+    let iterator = "aabbaa".matchAll(regexp);
+    let lastIndices = [0, 2, 6][Symbol.iterator]();
+
+    let iteratorRegExp = null;
+    let callCount = 0;
+    RegExp.prototype.exec = function(...args) {
+        callCount++;
+
+        if (iteratorRegExp === null)
+            iteratorRegExp = this;
+
+        assertEq(this === regexp, false);
+        assertEq(this, iteratorRegExp);
+        assertEq(this.source, regexp.source);
+        assertEq(this.flags, regexp.flags);
+        assertEq(this.lastIndex, lastIndices.next().value);
+        return Reflect.apply(RegExp_prototype_exec, this, args);
+    };
+
+    assertEqMatchResults(iterator, matchResults("aabbaa", /a+/g));
+    assertEq(callCount, 3);
+} finally {
+    // Restore optimizable RegExp.prototype shape.
+    Object.defineProperty(RegExp.prototype, "exec", {
+        value: RegExp_prototype_exec,
+        writable: true, enumerable: false, configurable: true
+    });
+}
+
+// Initial 'lastIndex' is zero if the RegExp is neither global nor sticky (1).
+{
+    let regexp = /a+/;
+    regexp.lastIndex = 2;
+
+    let iterator = regexp[Symbol.matchAll]("aaaaa");
+    assertEqMatchResults(iterator, matchResults("aaaaa", /a+/g, 0));
+}
+
+// Initial 'lastIndex' is zero if the RegExp is neither global nor sticky (2).
+{
+    let regexp = /a+/g;
+    regexp.lastIndex = 2;
+
+    let iterator = regexp[Symbol.matchAll]("aaaaa");
+    assertEqMatchResults(iterator, matchResults("aaaaa", /a+/g, 2));
+}
+
+// Initial 'lastIndex' is zero if the RegExp is neither global nor sticky (3).
+{
+    let regexp = /a+/y;
+    regexp.lastIndex = 2;
+
+    let iterator = regexp[Symbol.matchAll]("aaaaa");
+    assertEqMatchResults(iterator, matchResults("aaaaa", /a+/g, 2));
+}
+
+//Initial 'lastIndex' is zero if the RegExp is neither global nor sticky (4).
+{
+    let regexp = /a+/gy;
+    regexp.lastIndex = 2;
+
+    let iterator = regexp[Symbol.matchAll]("aaaaa");
+    assertEqMatchResults(iterator, matchResults("aaaaa", /a+/g, 2));
+}
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);
--- a/js/src/tests/test262-update.py
+++ b/js/src/tests/test262-update.py
@ -32,8 +32,6 @@ UNSUPPORTED_FEATURES = set([
    "regexp-unicode-property-escapes",
    "numeric-separator-literal",
    "Intl.Locale",
-    "String.prototype.matchAll",
-    "Symbol.matchAll",
    "global",
    "export-star-as-namespace-from-module",
    "Intl.ListFormat",
@ -45,6 +43,8 @@ FEATURE_CHECK_NEEDED = {
    "BigInt": "!this.hasOwnProperty('BigInt')",
    "SharedArrayBuffer": "!this.hasOwnProperty('SharedArrayBuffer')",
    "dynamic-import": "!xulRuntime.shell",
+    "String.prototype.matchAll": "!String.prototype.hasOwnProperty('matchAll')",
+    "Symbol.matchAll": "!Symbol.hasOwnProperty('matchAll')",
 }
 RELEASE_OR_BETA = set()

--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/isregexp-called-once.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/isregexp-called-once.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/isregexp-this-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/isregexp-this-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/length.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/length.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Jordan Harband. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/name.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/name.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Jordan Harband. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/prop-desc.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/prop-desc.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Jordan Harband. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/regexpcreate-this-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/regexpcreate-this-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-get-constructor-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-get-constructor-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-get-species-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-get-species-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-is-not-object-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-is-not-object-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-is-undefined.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-is-undefined.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-species-is-not-constructor.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-species-is-not-constructor.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-species-is-null-or-undefined.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-species-is-null-or-undefined.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-species-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor-species-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-constructor.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-regexp-get-global-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-regexp-get-global-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-regexp-get-unicode-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/species-regexp-get-unicode-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/string-tostring-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/string-tostring-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Jordan Harband. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/string-tostring.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/string-tostring.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-get-flags-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-get-flags-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-get-flags.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-get-flags.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-lastindex-cached.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-lastindex-cached.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-not-object-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-not-object-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Jordan Harband. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-tolength-lastindex-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-tolength-lastindex-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-tostring-flags-throws.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-tostring-flags-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-tostring-flags.js
+++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.matchAll/this-tostring-flags.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/Symbol.toStringTag.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/Symbol.toStringTag.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/ancestry.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/ancestry.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-call-throws.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-call-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-get-throws.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-get-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-match-get-0-throws.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-match-get-0-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-match-get-0-tostring-throws.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-match-get-0-tostring-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-match-get-0-tostring.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-match-get-0-tostring.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-not-callable.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec-not-callable.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/custom-regexpexec.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/length.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/length.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/name.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/name.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/next-iteration-global.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/next-iteration-global.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/next-iteration.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/next-iteration.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/next-missing-internal-slots.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/next-missing-internal-slots.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/prop-desc.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/prop-desc.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/regexp-tolength-lastindex-throws.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/regexp-tolength-lastindex-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/this-is-not-object-throws.js
+++ b/js/src/tests/test262/built-ins/RegExpStringIteratorPrototype/next/this-is-not-object-throws.js
@ -1,4 +1,4 @@
-// |reftest| skip -- Symbol.matchAll is not supported
+// |reftest| skip-if(!Symbol.hasOwnProperty('matchAll')) -- Symbol.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Peter Wong. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/String/prototype/matchAll/length.js
+++ b/js/src/tests/test262/built-ins/String/prototype/matchAll/length.js
@ -1,4 +1,4 @@
-// |reftest| skip -- String.prototype.matchAll is not supported
+// |reftest| skip-if(!String.prototype.hasOwnProperty('matchAll')) -- String.prototype.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Jordan Harband. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/js/src/tests/test262/built-ins/String/prototype/matchAll/name.js
+++ b/js/src/tests/test262/built-ins/String/prototype/matchAll/name.js
@ -1,4 +1,4 @@
-// |reftest| skip -- String.prototype.matchAll is not supported
+// |reftest| skip-if(!String.prototype.hasOwnProperty('matchAll')) -- String.prototype.matchAll is not enabled unconditionally
 // Copyright (C) 2018 Jordan Harband. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
--- a/Показать больше
+++ b/Показать больше