From 3b243b7e275374f69bbfd375ea1b9372b5551d6b Mon Sep 17 00:00:00 2001
From: Vincent W <VinceDaDev@hotmail.com>
Date: Tue, 22 Jan 2019 21:26:30 +0000
Subject: [PATCH] Bug 1508985 - Enable ESLint for dom/tests/browser/ (automatic
 changes) r=Standard8,qdot

Differential Revision: https://phabricator.services.mozilla.com/D14017

--HG--
extra : moz-landing-system : lando
---
 dom/tests/browser/beforeunload_test_page.html |   2 +-
 dom/tests/browser/browser_ConsoleAPITests.js  |  32 +-
 .../browser_ConsoleAPI_originAttributes.js    |   5 +-
 .../browser/browser_ConsoleStorageAPITests.js |  12 +-
 ...rowser_ConsoleStoragePBTest_perwindowpb.js |   6 +-
 dom/tests/browser/browser_allocateGigabyte.js |   4 +-
 ...ser_beforeunload_between_chrome_content.js |  16 +-
 dom/tests/browser/browser_bug1004814.js       |  10 +-
 dom/tests/browser/browser_bug1238427.js       |   2 +-
 dom/tests/browser/browser_bug1316330.js       |   2 +-
 dom/tests/browser/browser_bug396843.js        | 328 +++++++++---------
 ...ocus_steal_from_chrome_during_mousedown.js |   2 +-
 dom/tests/browser/browser_frame_elements.js   |  10 +-
 dom/tests/browser/browser_hasbeforeunload.js  |  60 ++--
 .../browser_largeAllocation_non_win32.js      |   8 +-
 .../browser/browser_largeAllocation_win32.js  |   4 +-
 .../browser/browser_localStorage_e10s.js      |  96 ++++-
 ...rowser_localStorage_privatestorageevent.js |  14 +-
 .../browser/browser_noopener_null_uri.js      |   2 +-
 dom/tests/browser/browser_persist_cookies.js  |   2 +-
 .../browser_persist_mixed_content_image.js    |   2 +-
 .../browser_test_new_window_from_content.js   |   4 +-
 .../browser_test_toolbars_visibility.js       |   2 +-
 dom/tests/browser/browser_xhr_sandbox.js      |   4 +-
 dom/tests/browser/helper_largeAllocation.js   |  18 +-
 dom/tests/browser/page_localstorage_e10s.html |   2 +-
 .../browser_test_performance_metrics.js       |  14 +-
 .../browser/perfmetrics/ping_worker.html      |   6 +-
 .../browser/perfmetrics/ping_worker2.html     |   2 +-
 dom/tests/browser/shared_worker.js            |   6 +-
 dom/tests/browser/test-console-api.html       |   6 +-
 dom/tests/browser/test_bug1004814.html        |   2 +-
 .../test_new_window_from_content_child.html   |   4 +-
 dom/tests/browser/worker_bug1004814.js        |   6 +-
 34 files changed, 379 insertions(+), 316 deletions(-)

diff --git a/dom/tests/browser/beforeunload_test_page.html b/dom/tests/browser/beforeunload_test_page.html
index 44222fbd75ae..4ef3bb56a249 100644
--- a/dom/tests/browser/beforeunload_test_page.html
+++ b/dom/tests/browser/beforeunload_test_page.html
@@ -84,7 +84,7 @@
     reset() {
       this.popInner(this._innerEventHandlers.length);
       this.popOuter(this._outerEventHandlers.length);
-    }
+    },
   };
 </script>
 
diff --git a/dom/tests/browser/browser_ConsoleAPITests.js b/dom/tests/browser/browser_ConsoleAPITests.js
index 2bb7eea6b3ba..23caf4541892 100644
--- a/dom/tests/browser/browser_ConsoleAPITests.js
+++ b/dom/tests/browser/browser_ConsoleAPITests.js
@@ -65,7 +65,7 @@ function spawnWithObserver(browser, observerFunc, func) {
     // Call the initialization function (if present)
     func ? ("(" + func.toString() + ")();") : "",
     "});",
-  ].join('\n');
+  ].join("\n");
 
   return ContentTask.spawn(browser, null, new Function(source));
 }
@@ -122,7 +122,7 @@ function testConsoleData(aMessageObject) {
   }
   default: {
     is(aMessageObject.arguments.length, gArgs.length, "arguments.length matches");
-    gArgs.forEach(function (a, i) {
+    gArgs.forEach(function(a, i) {
       // Waive Xray so that we don't get messed up by Xray ToString.
       //
       // It'd be nice to just use XPCNativeWrapper.unwrap here, but there are
@@ -270,7 +270,7 @@ async function startTraceTest(browser) {
       {columnNumber: 9, filename: TEST_URI, functionName: "window.foobar585956c", lineNumber: 6},
       {columnNumber: 16, filename: TEST_URI, functionName: "foobar585956b", lineNumber: 11},
       {columnNumber: 16, filename: TEST_URI, functionName: "foobar585956a", lineNumber: 15},
-      {columnNumber: 1, filename: TEST_URI, functionName: "onclick", lineNumber: 1}
+      {columnNumber: 1, filename: TEST_URI, functionName: "onclick", lineNumber: 1},
     ];
 
   });
@@ -290,7 +290,7 @@ function testLocationData(aMessageObject) {
   is(aMessageObject.lineNumber, gArgs[0].lineNumber, "lineNumber matches");
   is(aMessageObject.functionName, gArgs[0].functionName, "functionName matches");
   is(aMessageObject.arguments.length, gArgs[0].arguments.length, "arguments.length matches");
-  gArgs[0].arguments.forEach(function (a, i) {
+  gArgs[0].arguments.forEach(function(a, i) {
     is(aMessageObject.arguments[i], a, "correct arg " + i);
   });
 
@@ -301,7 +301,7 @@ async function startLocationTest(browser) {
   await spawnWithObserver(browser, testLocationData, function(opts) {
     gLevel = "log";
     gArgs = [
-      {filename: TEST_URI, functionName: "foobar646025", arguments: ["omg", "o", "d"], lineNumber: 19}
+      {filename: TEST_URI, functionName: "foobar646025", arguments: ["omg", "o", "d"], lineNumber: 19},
     ];
   });
 
@@ -341,13 +341,11 @@ function testConsoleGroup(aMessageObject) {
     is(aMessageObject.groupName, "a group", "groupCollapsed groupName matches");
     is(aMessageObject.arguments[0], "a", "groupCollapsed arguments[0] matches");
     is(aMessageObject.arguments[1], "group", "groupCollapsed arguments[0] matches");
-  }
-  else if (aMessageObject.level == "group") {
+  } else if (aMessageObject.level == "group") {
     is(aMessageObject.groupName, "b group", "group groupName matches");
     is(aMessageObject.arguments[0], "b", "group arguments[0] matches");
     is(aMessageObject.arguments[1], "group", "group arguments[1] matches");
-  }
-  else if (aMessageObject.level == "groupEnd") {
+  } else if (aMessageObject.level == "groupEnd") {
     is(aMessageObject.groupName, "b group", "groupEnd groupName matches");
   }
 
@@ -374,7 +372,7 @@ function testConsoleTime(aMessageObject) {
   is(aMessageObject.functionName, gArgs[0].functionName, "functionName matches");
   is(aMessageObject.timer.name, gArgs[0].timer.name, "timer.name matches");
 
-  gArgs[0].arguments.forEach(function (a, i) {
+  gArgs[0].arguments.forEach(function(a, i) {
     is(aMessageObject.arguments[i], a, "correct arg " + i);
   });
 
@@ -388,7 +386,7 @@ async function startTimeTest(browser) {
       {filename: TEST_URI, lineNumber: 23, functionName: "startTimer",
        arguments: ["foo"],
        timer: { name: "foo" },
-      }
+      },
     ];
   });
 
@@ -412,7 +410,7 @@ function testConsoleTimeEnd(aMessageObject) {
   info("timer duration: " + aMessageObject.timer.duration);
   ok(aMessageObject.timer.duration >= 0, "timer duration is positive");
 
-  gArgs[0].arguments.forEach(function (a, i) {
+  gArgs[0].arguments.forEach(function(a, i) {
     is(aMessageObject.arguments[i], a, "correct arg " + i);
   });
 
@@ -445,7 +443,7 @@ function testConsoleTimeStamp(aMessageObject) {
   is(aMessageObject.functionName, gArgs[0].functionName, "functionName matches");
   ok(aMessageObject.timeStamp > 0, "timeStamp is a positive value");
 
-  gArgs[0].arguments.forEach(function (a, i) {
+  gArgs[0].arguments.forEach(function(a, i) {
     is(aMessageObject.arguments[i], a, "correct arg " + i);
   });
 
@@ -457,8 +455,8 @@ async function startTimeStampTest(browser) {
     gLevel = "timeStamp";
     gArgs = [
       {filename: TEST_URI, lineNumber: 58, functionName: "timeStamp",
-       arguments: ["!!!"]
-      }
+       arguments: ["!!!"],
+      },
     ];
   });
 
@@ -486,8 +484,8 @@ async function startEmptyTimeStampTest(browser) {
     gLevel = "timeStamp";
     gArgs = [
       {filename: TEST_URI, lineNumber: 58, functionName: "timeStamp",
-       arguments: []
-      }
+       arguments: [],
+      },
     ];
   });
 
diff --git a/dom/tests/browser/browser_ConsoleAPI_originAttributes.js b/dom/tests/browser/browser_ConsoleAPI_originAttributes.js
index dc85765b30a4..3ae0731c2b7f 100644
--- a/dom/tests/browser/browser_ConsoleAPI_originAttributes.js
+++ b/dom/tests/browser/browser_ConsoleAPI_originAttributes.js
@@ -40,11 +40,10 @@ const ConsoleObserver = {
 
       finish();
     }
-  }
+  },
 };
 
-function test()
-{
+function test() {
   ConsoleObserver.init();
 
   waitForExplicitFinish();
diff --git a/dom/tests/browser/browser_ConsoleStorageAPITests.js b/dom/tests/browser/browser_ConsoleStorageAPITests.js
index fc2217207d83..7e68c13e563c 100644
--- a/dom/tests/browser/browser_ConsoleStorageAPITests.js
+++ b/dom/tests/browser/browser_ConsoleStorageAPITests.js
@@ -3,14 +3,12 @@
 
 const TEST_URI_NAV = "http://example.com/browser/dom/tests/browser/";
 
-function tearDown()
-{
+function tearDown() {
   while (gBrowser.tabs.length > 1)
     gBrowser.removeCurrentTab();
 }
 
-add_task(async function()
-{
+add_task(async function() {
   // Don't cache removed tabs, so "clear console cache on tab close" triggers.
   await SpecialPowers.pushPrefEnv({ set: [[ "browser.tabs.max_tabs_undo", 0 ]] });
 
@@ -35,7 +33,7 @@ add_task(async function()
       let ConsoleObserver = {
         QueryInterface: ChromeUtils.generateQI([Ci.nsIObserver]),
 
-        observe: function(aSubject, aTopic, aData) {
+        observe(aSubject, aTopic, aData) {
           if (aTopic == "console-storage-cache-event") {
             apiCallCount++;
             if (apiCallCount == 4) {
@@ -49,7 +47,7 @@ add_task(async function()
               resolve(windowId);
             }
           }
-        }
+        },
       };
 
       Services.obs.addObserver(ConsoleObserver, "console-storage-cache-event");
@@ -85,7 +83,7 @@ add_task(async function()
   browser = gBrowser.selectedBrowser;
 
   // Spin the event loop to make sure everything is cleared.
-  await ContentTask.spawn(browser, null, function () {
+  await ContentTask.spawn(browser, null, function() {
     return Promise.resolve();
   });
 
diff --git a/dom/tests/browser/browser_ConsoleStoragePBTest_perwindowpb.js b/dom/tests/browser/browser_ConsoleStoragePBTest_perwindowpb.js
index a5d1f8104650..0ec94ac8db79 100644
--- a/dom/tests/browser/browser_ConsoleStoragePBTest_perwindowpb.js
+++ b/dom/tests/browser/browser_ConsoleStoragePBTest_perwindowpb.js
@@ -29,7 +29,7 @@ function test() {
   function doTest(aIsPrivateMode, aWindow, aCallback) {
     BrowserTestUtils.browserLoaded(aWindow.gBrowser.selectedBrowser).then(() => {
       consoleObserver = {
-        observe: function(aSubject, aTopic, aData) {
+        observe(aSubject, aTopic, aData) {
           if (aTopic == "console-api-log-event") {
             afterEvents = ConsoleAPIStorage.getEvents(innerID);
             is(beforeEvents.length == afterEvents.length - 1, storageShouldOccur,
@@ -40,7 +40,7 @@ function test() {
               aCallback();
             });
           }
-        }
+        },
       };
 
       aWindow.Services.obs.addObserver(
@@ -63,7 +63,7 @@ function test() {
       // call whenNewWindowLoaded() instead of testOnWindow() on your test.
       executeSoon(() => aCallback(aWin));
     });
-  };
+  }
 
    // this function is called after calling finish() on the test.
   registerCleanupFunction(function() {
diff --git a/dom/tests/browser/browser_allocateGigabyte.js b/dom/tests/browser/browser_allocateGigabyte.js
index 0c2c170ef29f..4ec45b2f6056 100644
--- a/dom/tests/browser/browser_allocateGigabyte.js
+++ b/dom/tests/browser/browser_allocateGigabyte.js
@@ -21,7 +21,7 @@ add_task(async function() {
   await SpecialPowers.pushPrefEnv({
     set: [
       ["dom.largeAllocationHeader.enabled", true],
-    ]
+    ],
   });
 
   // A toplevel tab should be able to navigate cross process!
@@ -36,7 +36,7 @@ add_task(async function() {
 
     // Allocate a gigabyte of memory in the content process
     await ContentTask.spawn(aBrowser, null, () => {
-      let arrayBuffer = new ArrayBuffer(1024*1024*1024);
+      let arrayBuffer = new ArrayBuffer(1024 * 1024 * 1024);
       ok(arrayBuffer, "Successfully allocated a gigabyte of memory in content process");
     });
   });
diff --git a/dom/tests/browser/browser_beforeunload_between_chrome_content.js b/dom/tests/browser/browser_beforeunload_between_chrome_content.js
index edb30920b7de..6c26eacc4b61 100644
--- a/dom/tests/browser/browser_beforeunload_between_chrome_content.js
+++ b/dom/tests/browser/browser_beforeunload_between_chrome_content.js
@@ -1,7 +1,7 @@
 const TEST_URL = "http://www.example.com/browser/dom/tests/browser/dummy.html";
 
 function pageScript() {
-  window.addEventListener("beforeunload", function (event) {
+  window.addEventListener("beforeunload", function(event) {
     var str = "Leaving?";
     event.returnValue = str;
     return str;
@@ -10,7 +10,7 @@ function pageScript() {
 
 function injectBeforeUnload(browser) {
   return ContentTask.spawn(browser, null, async function() {
-    content.window.addEventListener("beforeunload", function (event) {
+    content.window.addEventListener("beforeunload", function(event) {
       sendAsyncMessage("Test:OnBeforeUnloadReceived");
       var str = "Leaving?";
       event.returnValue = str;
@@ -59,7 +59,7 @@ add_task(async function() {
   await BrowserTestUtils.loadURI(browser, "about:support");
   await Promise.all([
     dialogShown1,
-    BrowserTestUtils.browserLoaded(browser)
+    BrowserTestUtils.browserLoaded(browser),
   ]);
 
   is(beforeUnloadCount, 1, "Should have received one beforeunload event.");
@@ -77,7 +77,7 @@ add_task(async function() {
   gBrowser.goForward();
   await Promise.all([
     dialogShown2,
-    BrowserTestUtils.browserLoaded(browser)
+    BrowserTestUtils.browserLoaded(browser),
   ]);
   is(beforeUnloadCount, 2, "Should have received two beforeunload events.");
 
@@ -101,7 +101,7 @@ add_task(async function() {
 
   ok(!browser.isRemoteBrowser, "Browser should not be remote.");
   await ContentTask.spawn(browser, null, async function() {
-    content.window.addEventListener("beforeunload", function (event) {
+    content.window.addEventListener("beforeunload", function(event) {
       sendAsyncMessage("Test:OnBeforeUnloadReceived");
       var str = "Leaving?";
       event.returnValue = str;
@@ -114,7 +114,7 @@ add_task(async function() {
   await BrowserTestUtils.loadURI(browser, TEST_URL);
   await Promise.all([
     dialogShown1,
-    BrowserTestUtils.browserLoaded(browser)
+    BrowserTestUtils.browserLoaded(browser),
   ]);
   is(beforeUnloadCount, 1, "Should have received one beforeunload event.");
   ok(browser.isRemoteBrowser, "Browser should be remote.");
@@ -124,7 +124,7 @@ add_task(async function() {
   gBrowser.goBack();
   await BrowserTestUtils.browserLoaded(browser);
   await ContentTask.spawn(browser, null, async function() {
-    content.window.addEventListener("beforeunload", function (event) {
+    content.window.addEventListener("beforeunload", function(event) {
       sendAsyncMessage("Test:OnBeforeUnloadReceived");
       var str = "Leaving?";
       event.returnValue = str;
@@ -138,7 +138,7 @@ add_task(async function() {
   gBrowser.goForward();
   await Promise.all([
     dialogShown2,
-    BrowserTestUtils.browserLoaded(browser)
+    BrowserTestUtils.browserLoaded(browser),
   ]);
   is(beforeUnloadCount, 2, "Should have received two beforeunload events.");
 
diff --git a/dom/tests/browser/browser_bug1004814.js b/dom/tests/browser/browser_bug1004814.js
index c105c2eda3c3..2db9cd4a4d0c 100644
--- a/dom/tests/browser/browser_bug1004814.js
+++ b/dom/tests/browser/browser_bug1004814.js
@@ -5,23 +5,23 @@
 
 add_task(async function() {
   await BrowserTestUtils.withNewTab("about:blank", async function(aBrowser) {
-    let duration = await ContentTask.spawn(aBrowser, null, function (opts) {
+    let duration = await ContentTask.spawn(aBrowser, null, function(opts) {
       const TEST_URI = "http://example.com/browser/dom/tests/browser/test_bug1004814.html";
 
       return new Promise(resolve => {
         let ConsoleObserver = {
           QueryInterface: ChromeUtils.generateQI([Ci.nsIObserver]),
 
-          observe: function(aSubject, aTopic, aData) {
+          observe(aSubject, aTopic, aData) {
             var obj = aSubject.wrappedJSObject;
-            if (obj.arguments.length != 1 || obj.arguments[0] != 'bug1004814' ||
-                obj.level != 'timeEnd') {
+            if (obj.arguments.length != 1 || obj.arguments[0] != "bug1004814" ||
+                obj.level != "timeEnd") {
               return;
             }
 
             Services.obs.removeObserver(this, "console-api-log-event");
             resolve(obj.timer.duration);
-          }
+          },
         };
 
         Services.obs.addObserver(ConsoleObserver, "console-api-log-event");
diff --git a/dom/tests/browser/browser_bug1238427.js b/dom/tests/browser/browser_bug1238427.js
index ee620cc69b2f..6d8807a7a3b5 100644
--- a/dom/tests/browser/browser_bug1238427.js
+++ b/dom/tests/browser/browser_bug1238427.js
@@ -23,7 +23,7 @@ add_task(async function() {
   // it will show up as a non-shutdown leak.
   await BrowserTestUtils.withNewTab({
     gBrowser,
-    url: TEST_URI
+    url: TEST_URI,
   }, function(browser) { /* ... */ });
 
   ok(true, "Need to do something in this test");
diff --git a/dom/tests/browser/browser_bug1316330.js b/dom/tests/browser/browser_bug1316330.js
index 43a7902271ea..0302f9480fe1 100644
--- a/dom/tests/browser/browser_bug1316330.js
+++ b/dom/tests/browser/browser_bug1316330.js
@@ -1,6 +1,6 @@
 const URL =
   "data:text/html,<script>" +
-  "window.focus();" + 
+  "window.focus();" +
   "var down = 0; var press = 0;" +
   "onkeydown = function(e) {" +
   "  var startTime = Date.now();" +
diff --git a/dom/tests/browser/browser_bug396843.js b/dom/tests/browser/browser_bug396843.js
index 3bd8e5ae4349..8b4b2de41f14 100644
--- a/dom/tests/browser/browser_bug396843.js
+++ b/dom/tests/browser/browser_bug396843.js
@@ -11,175 +11,175 @@ function testInDocument(doc, documentID) {
     }
 
     /* List copy/pasted from nsHTMLTagList.h */
-    HTML_TAG("a", "Anchor")
-    HTML_TAG("abbr", "Span")
-    HTML_TAG("acronym", "Span")
-    HTML_TAG("address", "Span")
-    HTML_TAG("applet", "Unknown")
-    HTML_TAG("area", "Area")
-    HTML_TAG("b", "Span")
-    HTML_TAG("base", "Shared")
-    HTML_TAG("basefont", "Span")
-    HTML_TAG("bdi", "")
-    HTML_TAG("bdo", "Span")
-    HTML_TAG("bgsound", "Span")
-    HTML_TAG("big", "Span")
-    HTML_TAG("blockquote", "Shared")
-    HTML_TAG("body", "Body")
-    HTML_TAG("br", "BR")
-    HTML_TAG("button", "Button")
-    HTML_TAG("canvas", "Canvas")
-    HTML_TAG("caption", "TableCaption")
-    HTML_TAG("center", "Span")
-    HTML_TAG("cite", "Span")
-    HTML_TAG("code", "Span")
-    HTML_TAG("col", "TableCol")
-    HTML_TAG("colgroup", "TableCol")
-    HTML_TAG("dd", "Span")
-    HTML_TAG("del", "Mod")
-    HTML_TAG("dfn", "Span")
-    HTML_TAG("dir", "Shared")
-    HTML_TAG("div", "Div")
-    HTML_TAG("dl", "SharedList")
-    HTML_TAG("dt", "Span")
-    HTML_TAG("em", "Span")
-    HTML_TAG("embed", "Embed")
-    HTML_TAG("fieldset", "FieldSet")
-    HTML_TAG("font", "Font")
-    HTML_TAG("form", "Form")
-    HTML_TAG("frame", "Frame")
-    HTML_TAG("frameset", "FrameSet")
-    HTML_TAG("h1", "Heading")
-    HTML_TAG("h2", "Heading")
-    HTML_TAG("h3", "Heading")
-    HTML_TAG("h4", "Heading")
-    HTML_TAG("h5", "Heading")
-    HTML_TAG("h6", "Heading")
-    HTML_TAG("head", "Head")
-    HTML_TAG("hr", "HR")
-    HTML_TAG("html", "Html")
-    HTML_TAG("i", "Span")
-    HTML_TAG("iframe", "IFrame")
-    HTML_TAG("image", "")
-    HTML_TAG("img", "Image")
-    HTML_TAG("input", "Input")
-    HTML_TAG("ins", "Mod")
-    HTML_TAG("isindex", "Unknown")
-    HTML_TAG("kbd", "Span")
-    HTML_TAG("keygen", "Span")
-    HTML_TAG("label", "Label")
-    HTML_TAG("legend", "Legend")
-    HTML_TAG("li", "LI")
-    HTML_TAG("link", "Link")
-    HTML_TAG("listing", "Span")
-    HTML_TAG("map", "Map")
-    HTML_TAG("marquee", "Div")
-    HTML_TAG("menu", "Shared")
-    HTML_TAG("meta", "Meta")
-    HTML_TAG("multicol", "Unknown")
-    HTML_TAG("nobr", "Span")
-    HTML_TAG("noembed", "Div")
-    HTML_TAG("noframes", "Div")
-    HTML_TAG("noscript", "Div")
-    HTML_TAG("object", "Object")
-    HTML_TAG("ol", "SharedList")
-    HTML_TAG("optgroup", "OptGroup")
-    HTML_TAG("option", "Option")
-    HTML_TAG("p", "Paragraph")
-    HTML_TAG("param", "Shared")
-    HTML_TAG("plaintext", "Span")
-    HTML_TAG("pre", "Pre")
-    HTML_TAG("q", "Shared")
-    HTML_TAG("s", "Span")
-    HTML_TAG("samp", "Span")
-    HTML_TAG("script", "Script")
-    HTML_TAG("select", "Select")
-    HTML_TAG("small", "Span")
-    HTML_TAG("spacer", "Unknown")
-    HTML_TAG("span", "Span")
-    HTML_TAG("strike", "Span")
-    HTML_TAG("strong", "Span")
-    HTML_TAG("style", "Style")
-    HTML_TAG("sub", "Span")
-    HTML_TAG("sup", "Span")
-    HTML_TAG("table", "Table")
-    HTML_TAG("tbody", "TableSection")
-    HTML_TAG("td", "TableCell")
-    HTML_TAG("textarea", "TextArea")
-    HTML_TAG("tfoot", "TableSection")
-    HTML_TAG("th", "TableCell")
-    HTML_TAG("thead", "TableSection")
-    HTML_TAG("template", "Template")
-    HTML_TAG("title", "Title")
-    HTML_TAG("tr", "TableRow")
-    HTML_TAG("tt", "Span")
-    HTML_TAG("u", "Span")
-    HTML_TAG("ul", "SharedList")
-    HTML_TAG("var", "Span")
-    HTML_TAG("wbr", "Shared")
-    HTML_TAG("xmp", "Span")
+    HTML_TAG("a", "Anchor");
+    HTML_TAG("abbr", "Span");
+    HTML_TAG("acronym", "Span");
+    HTML_TAG("address", "Span");
+    HTML_TAG("applet", "Unknown");
+    HTML_TAG("area", "Area");
+    HTML_TAG("b", "Span");
+    HTML_TAG("base", "Shared");
+    HTML_TAG("basefont", "Span");
+    HTML_TAG("bdi", "");
+    HTML_TAG("bdo", "Span");
+    HTML_TAG("bgsound", "Span");
+    HTML_TAG("big", "Span");
+    HTML_TAG("blockquote", "Shared");
+    HTML_TAG("body", "Body");
+    HTML_TAG("br", "BR");
+    HTML_TAG("button", "Button");
+    HTML_TAG("canvas", "Canvas");
+    HTML_TAG("caption", "TableCaption");
+    HTML_TAG("center", "Span");
+    HTML_TAG("cite", "Span");
+    HTML_TAG("code", "Span");
+    HTML_TAG("col", "TableCol");
+    HTML_TAG("colgroup", "TableCol");
+    HTML_TAG("dd", "Span");
+    HTML_TAG("del", "Mod");
+    HTML_TAG("dfn", "Span");
+    HTML_TAG("dir", "Shared");
+    HTML_TAG("div", "Div");
+    HTML_TAG("dl", "SharedList");
+    HTML_TAG("dt", "Span");
+    HTML_TAG("em", "Span");
+    HTML_TAG("embed", "Embed");
+    HTML_TAG("fieldset", "FieldSet");
+    HTML_TAG("font", "Font");
+    HTML_TAG("form", "Form");
+    HTML_TAG("frame", "Frame");
+    HTML_TAG("frameset", "FrameSet");
+    HTML_TAG("h1", "Heading");
+    HTML_TAG("h2", "Heading");
+    HTML_TAG("h3", "Heading");
+    HTML_TAG("h4", "Heading");
+    HTML_TAG("h5", "Heading");
+    HTML_TAG("h6", "Heading");
+    HTML_TAG("head", "Head");
+    HTML_TAG("hr", "HR");
+    HTML_TAG("html", "Html");
+    HTML_TAG("i", "Span");
+    HTML_TAG("iframe", "IFrame");
+    HTML_TAG("image", "");
+    HTML_TAG("img", "Image");
+    HTML_TAG("input", "Input");
+    HTML_TAG("ins", "Mod");
+    HTML_TAG("isindex", "Unknown");
+    HTML_TAG("kbd", "Span");
+    HTML_TAG("keygen", "Span");
+    HTML_TAG("label", "Label");
+    HTML_TAG("legend", "Legend");
+    HTML_TAG("li", "LI");
+    HTML_TAG("link", "Link");
+    HTML_TAG("listing", "Span");
+    HTML_TAG("map", "Map");
+    HTML_TAG("marquee", "Div");
+    HTML_TAG("menu", "Shared");
+    HTML_TAG("meta", "Meta");
+    HTML_TAG("multicol", "Unknown");
+    HTML_TAG("nobr", "Span");
+    HTML_TAG("noembed", "Div");
+    HTML_TAG("noframes", "Div");
+    HTML_TAG("noscript", "Div");
+    HTML_TAG("object", "Object");
+    HTML_TAG("ol", "SharedList");
+    HTML_TAG("optgroup", "OptGroup");
+    HTML_TAG("option", "Option");
+    HTML_TAG("p", "Paragraph");
+    HTML_TAG("param", "Shared");
+    HTML_TAG("plaintext", "Span");
+    HTML_TAG("pre", "Pre");
+    HTML_TAG("q", "Shared");
+    HTML_TAG("s", "Span");
+    HTML_TAG("samp", "Span");
+    HTML_TAG("script", "Script");
+    HTML_TAG("select", "Select");
+    HTML_TAG("small", "Span");
+    HTML_TAG("spacer", "Unknown");
+    HTML_TAG("span", "Span");
+    HTML_TAG("strike", "Span");
+    HTML_TAG("strong", "Span");
+    HTML_TAG("style", "Style");
+    HTML_TAG("sub", "Span");
+    HTML_TAG("sup", "Span");
+    HTML_TAG("table", "Table");
+    HTML_TAG("tbody", "TableSection");
+    HTML_TAG("td", "TableCell");
+    HTML_TAG("textarea", "TextArea");
+    HTML_TAG("tfoot", "TableSection");
+    HTML_TAG("th", "TableCell");
+    HTML_TAG("thead", "TableSection");
+    HTML_TAG("template", "Template");
+    HTML_TAG("title", "Title");
+    HTML_TAG("tr", "TableRow");
+    HTML_TAG("tt", "Span");
+    HTML_TAG("u", "Span");
+    HTML_TAG("ul", "SharedList");
+    HTML_TAG("var", "Span");
+    HTML_TAG("wbr", "Shared");
+    HTML_TAG("xmp", "Span");
 
     function SVG_TAG(name) {
         allNodes.push(doc.createElementNS("http://www.w3.org/2000/svg", name));
     }
 
     // List sorta stolen from SVG element factory.
-    SVG_TAG("a")
-    SVG_TAG("polyline")
-    SVG_TAG("polygon")
-    SVG_TAG("circle")
-    SVG_TAG("ellipse")
-    SVG_TAG("line")
-    SVG_TAG("rect")
-    SVG_TAG("svg")
-    SVG_TAG("g")
-    SVG_TAG("foreignObject")
-    SVG_TAG("path")
-    SVG_TAG("text")
-    SVG_TAG("tspan")
-    SVG_TAG("image")
-    SVG_TAG("style")
-    SVG_TAG("linearGradient")
-    SVG_TAG("metadata")
-    SVG_TAG("radialGradient")
-    SVG_TAG("stop")
-    SVG_TAG("defs")
-    SVG_TAG("desc")
-    SVG_TAG("script")
-    SVG_TAG("use")
-    SVG_TAG("symbol")
-    SVG_TAG("marker")
-    SVG_TAG("title")
-    SVG_TAG("clipPath")
-    SVG_TAG("textPath")
-    SVG_TAG("filter")
-    SVG_TAG("feBlend")
-    SVG_TAG("feColorMatrix")
-    SVG_TAG("feComponentTransfer")
-    SVG_TAG("feComposite")
-    SVG_TAG("feFuncR")
-    SVG_TAG("feFuncG")
-    SVG_TAG("feFuncB")
-    SVG_TAG("feFuncA")
-    SVG_TAG("feGaussianBlur")
-    SVG_TAG("feMerge")
-    SVG_TAG("feMergeNode")
-    SVG_TAG("feMorphology")
-    SVG_TAG("feOffset")
-    SVG_TAG("feFlood")
-    SVG_TAG("feTile")
-    SVG_TAG("feTurbulence")
-    SVG_TAG("feConvolveMatrix")
-    SVG_TAG("feDistantLight")
-    SVG_TAG("fePointLight")
-    SVG_TAG("feSpotLight")
-    SVG_TAG("feDiffuseLighting")
-    SVG_TAG("feSpecularLighting")
-    SVG_TAG("feDisplacementMap")
-    SVG_TAG("feImage")
-    SVG_TAG("pattern")
-    SVG_TAG("mask")
-    SVG_TAG("svgSwitch")
+    SVG_TAG("a");
+    SVG_TAG("polyline");
+    SVG_TAG("polygon");
+    SVG_TAG("circle");
+    SVG_TAG("ellipse");
+    SVG_TAG("line");
+    SVG_TAG("rect");
+    SVG_TAG("svg");
+    SVG_TAG("g");
+    SVG_TAG("foreignObject");
+    SVG_TAG("path");
+    SVG_TAG("text");
+    SVG_TAG("tspan");
+    SVG_TAG("image");
+    SVG_TAG("style");
+    SVG_TAG("linearGradient");
+    SVG_TAG("metadata");
+    SVG_TAG("radialGradient");
+    SVG_TAG("stop");
+    SVG_TAG("defs");
+    SVG_TAG("desc");
+    SVG_TAG("script");
+    SVG_TAG("use");
+    SVG_TAG("symbol");
+    SVG_TAG("marker");
+    SVG_TAG("title");
+    SVG_TAG("clipPath");
+    SVG_TAG("textPath");
+    SVG_TAG("filter");
+    SVG_TAG("feBlend");
+    SVG_TAG("feColorMatrix");
+    SVG_TAG("feComponentTransfer");
+    SVG_TAG("feComposite");
+    SVG_TAG("feFuncR");
+    SVG_TAG("feFuncG");
+    SVG_TAG("feFuncB");
+    SVG_TAG("feFuncA");
+    SVG_TAG("feGaussianBlur");
+    SVG_TAG("feMerge");
+    SVG_TAG("feMergeNode");
+    SVG_TAG("feMorphology");
+    SVG_TAG("feOffset");
+    SVG_TAG("feFlood");
+    SVG_TAG("feTile");
+    SVG_TAG("feTurbulence");
+    SVG_TAG("feConvolveMatrix");
+    SVG_TAG("feDistantLight");
+    SVG_TAG("fePointLight");
+    SVG_TAG("feSpotLight");
+    SVG_TAG("feDiffuseLighting");
+    SVG_TAG("feSpecularLighting");
+    SVG_TAG("feDisplacementMap");
+    SVG_TAG("feImage");
+    SVG_TAG("pattern");
+    SVG_TAG("mask");
+    SVG_TAG("svgSwitch");
 
     // Toss in some other namespaced stuff too, for good measure
     // XUL stuff might not be creatable in content documents
@@ -202,7 +202,7 @@ function testInDocument(doc, documentID) {
     allNodes.push(doc.createDocumentFragment());
     XMLNodes.push(XMLDoc.createCDATASection("some text"));
     XMLNodes.push(XMLDoc.createProcessingInstruction("PI", "data"));
-        
+
     function runTestUnwrapped() {
         if (!("wrappedJSObject" in doc)) {
             return;
diff --git a/dom/tests/browser/browser_focus_steal_from_chrome_during_mousedown.js b/dom/tests/browser/browser_focus_steal_from_chrome_during_mousedown.js
index 69ffd33d58c2..f05b1237b8b9 100644
--- a/dom/tests/browser/browser_focus_steal_from_chrome_during_mousedown.js
+++ b/dom/tests/browser/browser_focus_steal_from_chrome_during_mousedown.js
@@ -30,7 +30,7 @@ add_task(async function test() {
     isnot(fm.focusedElement, document.getElementById("urlbar").inputField,
        "Failed to move focus away from search bar: button=" + button);
 
-    await ContentTask.spawn(tab.linkedBrowser, button, async function (button) {
+    await ContentTask.spawn(tab.linkedBrowser, button, async function(button) {
       let fm = Cc["@mozilla.org/focus-manager;1"].
           getService(Ci.nsIFocusManager);
 
diff --git a/dom/tests/browser/browser_frame_elements.js b/dom/tests/browser/browser_frame_elements.js
index 868e34bced62..ebb8c507de31 100644
--- a/dom/tests/browser/browser_frame_elements.js
+++ b/dom/tests/browser/browser_frame_elements.js
@@ -11,7 +11,7 @@ add_task(async function test() {
     if (!browser.isRemoteBrowser) {
       // Non-e10s, access contentWindow and confirm its container is the browser:
       let windowUtils = browser.contentWindow.windowUtils;
-      is (windowUtils.containerElement, browser,
+      is(windowUtils.containerElement, browser,
           "Container element for main window is xul:browser");
 
     }
@@ -57,8 +57,8 @@ function startTests() {
 async function mozBrowserTests(browser) {
   info("Granting special powers for mozbrowser");
   SpecialPowers.addPermission("browser", true, TEST_URI);
-  SpecialPowers.setBoolPref('dom.mozBrowserFramesEnabled', true);
-  SpecialPowers.setBoolPref('network.disable.ipc.security', true);
+  SpecialPowers.setBoolPref("dom.mozBrowserFramesEnabled", true);
+  SpecialPowers.setBoolPref("network.disable.ipc.security", true);
 
   await ContentTask.spawn(browser, null, function() {
     info("Checking mozbrowser iframe");
@@ -72,7 +72,7 @@ async function mozBrowserTests(browser) {
   });
 
   info("Revoking special powers for mozbrowser");
-  SpecialPowers.clearUserPref('dom.mozBrowserFramesEnabled');
-  SpecialPowers.clearUserPref('network.disable.ipc.security');
+  SpecialPowers.clearUserPref("dom.mozBrowserFramesEnabled");
+  SpecialPowers.clearUserPref("network.disable.ipc.security");
   SpecialPowers.removePermission("browser", TEST_URI);
 }
diff --git a/dom/tests/browser/browser_hasbeforeunload.js b/dom/tests/browser/browser_hasbeforeunload.js
index ad32bb13dd44..6318acd1fbf7 100644
--- a/dom/tests/browser/browser_hasbeforeunload.js
+++ b/dom/tests/browser/browser_hasbeforeunload.js
@@ -55,7 +55,7 @@ function addOuterBeforeUnloadListeners(browser, howMany = 1, frameDepth = 1) {
   if (frameDepth == 0) {
     throw new Error("When adding a beforeunload listener on an outer " +
                     "window, the frame you're targeting needs to be at " +
-                    "depth > 0.")
+                    "depth > 0.");
   }
 
   return controlFrameAt(browser, frameDepth, {
@@ -115,7 +115,7 @@ function removeOuterBeforeUnloadListeners(browser, howMany = 1, frameDepth = 1)
   if (frameDepth == 0) {
     throw new Error("When removing a beforeunload listener from an outer " +
                     "window, the frame you're targeting needs to be at " +
-                    "depth > 0.")
+                    "depth > 0.");
   }
 
   return controlFrameAt(browser, frameDepth, {
@@ -445,8 +445,8 @@ add_task(async function test_inner_window_scenarios() {
     //      |--> <iframe at PAGE_URL> (BOTTOM)
     //
     await prepareSubframes(browser, [
-      { sandboxAttributes: null, },
-      { sandboxAttributes: null, },
+      { sandboxAttributes: null },
+      { sandboxAttributes: null },
     ]);
     // These constants are just to make it easier to know which
     // frame we're referring to without having to remember the
@@ -488,8 +488,8 @@ add_task(async function test_inner_window_scenarios() {
 
     // Reset our window structure now.
     await prepareSubframes(browser, [
-      { sandboxAttributes: null, },
-      { sandboxAttributes: null, },
+      { sandboxAttributes: null },
+      { sandboxAttributes: null },
     ]);
 
     // This time, add beforeunload event listeners to both the
@@ -505,8 +505,8 @@ add_task(async function test_inner_window_scenarios() {
     // event listeners, and if we remove the BOTTOM <iframe> and the
     // MIDDLE <iframe>, that hasBeforeUnload is set to false.
     await prepareSubframes(browser, [
-      { sandboxAttributes: null, },
-      { sandboxAttributes: null, },
+      { sandboxAttributes: null },
+      { sandboxAttributes: null },
     ]);
     await addBeforeUnloadListeners(browser, 3, MIDDLE);
     await addBeforeUnloadListeners(browser, 1, BOTTOM);
@@ -520,8 +520,8 @@ add_task(async function test_inner_window_scenarios() {
     // event listeners, and if we remove just the MIDDLE <iframe>, that
     // hasBeforeUnload is set to false.
     await prepareSubframes(browser, [
-      { sandboxAttributes: null, },
-      { sandboxAttributes: null, },
+      { sandboxAttributes: null },
+      { sandboxAttributes: null },
     ]);
     await addBeforeUnloadListeners(browser, 3, MIDDLE);
     await addBeforeUnloadListeners(browser, 1, BOTTOM);
@@ -533,8 +533,8 @@ add_task(async function test_inner_window_scenarios() {
     // permission, do not result in the hasBeforeUnload attribute
     // being set to true when beforeunload event listeners are added.
     await prepareSubframes(browser, [
-      { sandboxAttributes: "allow-scripts", },
-      { sandboxAttributes: "allow-scripts", },
+      { sandboxAttributes: "allow-scripts" },
+      { sandboxAttributes: "allow-scripts" },
     ]);
 
     await addBeforeUnloadListeners(browser, 3, MIDDLE);
@@ -549,8 +549,8 @@ add_task(async function test_inner_window_scenarios() {
     // permission, cause the hasBeforeUnload attribute to be set
     // to true when beforeunload event listeners are added.
     await prepareSubframes(browser, [
-      { sandboxAttributes: "allow-scripts allow-modals", },
-      { sandboxAttributes: "allow-scripts allow-modals", },
+      { sandboxAttributes: "allow-scripts allow-modals" },
+      { sandboxAttributes: "allow-scripts allow-modals" },
     ]);
 
     await addBeforeUnloadListeners(browser, 3, MIDDLE);
@@ -591,8 +591,8 @@ add_task(async function test_outer_window_scenarios() {
     //      |--> <iframe at PAGE_URL> (BOTTOM)
     //
     await prepareSubframes(browser, [
-      { sandboxAttributes: null, },
-      { sandboxAttributes: null, },
+      { sandboxAttributes: null },
+      { sandboxAttributes: null },
     ]);
 
     // These constants are just to make it easier to know which
@@ -641,8 +641,8 @@ add_task(async function test_outer_window_scenarios() {
     assertHasBeforeUnload(browser, false);
 
     await prepareSubframes(browser, [
-      { sandboxAttributes: null, },
-      { sandboxAttributes: null, },
+      { sandboxAttributes: null },
+      { sandboxAttributes: null },
     ]);
 
     // Tests that if there are beforeunload event listeners on
@@ -674,8 +674,8 @@ add_task(async function test_outer_window_scenarios() {
 
     // Reset our window structure now.
     await prepareSubframes(browser, [
-      { sandboxAttributes: null, },
-      { sandboxAttributes: null, },
+      { sandboxAttributes: null },
+      { sandboxAttributes: null },
     ]);
 
     // This time, add beforeunload event listeners to the outer
@@ -691,8 +691,8 @@ add_task(async function test_outer_window_scenarios() {
     // MIDDLE and BOTOTM, and then removes those iframes. Removing
     // both iframes should set hasBeforeUnload to false.
     await prepareSubframes(browser, [
-      { sandboxAttributes: null, },
-      { sandboxAttributes: null, },
+      { sandboxAttributes: null },
+      { sandboxAttributes: null },
     ]);
     await addOuterBeforeUnloadListeners(browser, 3, MIDDLE);
     await addOuterBeforeUnloadListeners(browser, 1, BOTTOM);
@@ -707,8 +707,8 @@ add_task(async function test_outer_window_scenarios() {
     // take the bottom one with it). This should set hasBeforeUnload to
     // false.
     await prepareSubframes(browser, [
-      { sandboxAttributes: null, },
-      { sandboxAttributes: null, },
+      { sandboxAttributes: null },
+      { sandboxAttributes: null },
     ]);
     await addOuterBeforeUnloadListeners(browser, 3, MIDDLE);
     await addOuterBeforeUnloadListeners(browser, 1, BOTTOM);
@@ -723,8 +723,8 @@ add_task(async function test_outer_window_scenarios() {
     // allow-same-origin permission, otherwise a cross-origin
     // security exception is thrown.
     await prepareSubframes(browser, [
-      { sandboxAttributes: "allow-same-origin allow-scripts", },
-      { sandboxAttributes: "allow-same-origin allow-scripts", },
+      { sandboxAttributes: "allow-same-origin allow-scripts" },
+      { sandboxAttributes: "allow-same-origin allow-scripts" },
     ]);
 
     await addOuterBeforeUnloadListeners(browser, 3, MIDDLE);
@@ -741,8 +741,8 @@ add_task(async function test_outer_window_scenarios() {
     // that this requires the allow-same-origin permission,
     // otherwise a cross-origin security exception is thrown.
     await prepareSubframes(browser, [
-      { sandboxAttributes: "allow-same-origin allow-scripts allow-modals", },
-      { sandboxAttributes: "allow-same-origin allow-scripts allow-modals", },
+      { sandboxAttributes: "allow-same-origin allow-scripts allow-modals" },
+      { sandboxAttributes: "allow-same-origin allow-scripts allow-modals" },
     ]);
 
     await addOuterBeforeUnloadListeners(browser, 3, MIDDLE);
@@ -781,8 +781,8 @@ add_task(async function test_mixed_inner_and_outer_window_scenarios() {
     //      |--> <iframe at PAGE_URL> (BOTTOM)
     //
     await prepareSubframes(browser, [
-      { sandboxAttributes: null, },
-      { sandboxAttributes: null, },
+      { sandboxAttributes: null },
+      { sandboxAttributes: null },
     ]);
 
     // These constants are just to make it easier to know which
diff --git a/dom/tests/browser/browser_largeAllocation_non_win32.js b/dom/tests/browser/browser_largeAllocation_non_win32.js
index 50e5f266b3da..a2d4addbc479 100644
--- a/dom/tests/browser/browser_largeAllocation_non_win32.js
+++ b/dom/tests/browser/browser_largeAllocation_non_win32.js
@@ -13,8 +13,8 @@ add_task(async function() {
       ["dom.largeAllocation.forceEnable", true],
       // Increase processCount.webLargeAllocation to avoid any races where
       // processes aren't being cleaned up quickly enough.
-      ["dom.ipc.processCount.webLargeAllocation", 20]
-    ]
+      ["dom.ipc.processCount.webLargeAllocation", 20],
+    ],
   });
 
   await largeAllocSuccessTests();
@@ -31,8 +31,8 @@ add_task(async function() {
       ["dom.largeAllocation.forceEnable", false],
       // Increase processCount.webLargeAllocation to avoid any races where
       // processes aren't being cleaned up quickly enough.
-      ["dom.ipc.processCount.webLargeAllocation", 20]
-    ]
+      ["dom.ipc.processCount.webLargeAllocation", 20],
+    ],
   });
 
   await largeAllocFailTests();
diff --git a/dom/tests/browser/browser_largeAllocation_win32.js b/dom/tests/browser/browser_largeAllocation_win32.js
index 65bc638d80d2..f002a5c9aaab 100644
--- a/dom/tests/browser/browser_largeAllocation_win32.js
+++ b/dom/tests/browser/browser_largeAllocation_win32.js
@@ -9,8 +9,8 @@ add_task(async function() {
       ["dom.largeAllocationHeader.enabled", true],
       // Increase processCount.webLargeAllocation to avoid any races where
       // processes aren't being cleaned up quickly enough.
-      ["dom.ipc.processCount.webLargeAllocation", 20]
-    ]
+      ["dom.ipc.processCount.webLargeAllocation", 20],
+    ],
   });
 
   await largeAllocSuccessTests();
diff --git a/dom/tests/browser/browser_localStorage_e10s.js b/dom/tests/browser/browser_localStorage_e10s.js
index 44b6f1a80fd2..a1ac7e36e8ad 100644
--- a/dom/tests/browser/browser_localStorage_e10s.js
+++ b/dom/tests/browser/browser_localStorage_e10s.js
@@ -5,6 +5,74 @@ const HELPER_PAGE_ORIGIN = "http://example.com/";
 let testDir = gTestPath.substr(0, gTestPath.lastIndexOf("/"));
 Services.scriptloader.loadSubScript(testDir + "/helper_localStorage_e10s.js",
                                     this);
+// Simple tab wrapper abstracting our messaging mechanism;
+class KnownTab {
+  constructor(name, tab) {
+    this.name = name;
+    this.tab = tab;
+  }
+
+  cleanup() {
+    this.tab = null;
+  }
+}
+
+// Simple data structure class to help us track opened tabs and their pids.
+class KnownTabs {
+  constructor() {
+    this.byPid = new Map();
+    this.byName = new Map();
+  }
+
+  cleanup() {
+    this.byPid = null;
+    this.byName = null;
+  }
+}
+
+/**
+ * Open our helper page in a tab in its own content process, asserting that it
+ * really is in its own process.  We initially load and wait for about:blank to
+ * load, and only then loadURI to our actual page.  This is to ensure that
+ * LocalStorageManager has had an opportunity to be created and populate
+ * mOriginsHavingData.
+ *
+ * (nsGlobalWindow will reliably create LocalStorageManager as a side-effect of
+ * the unconditional call to nsGlobalWindow::PreloadLocalStorage.  This will
+ * reliably create the StorageDBChild instance, and its corresponding
+ * StorageDBParent will send the set of origins when it is constructed.)
+ */
+async function openTestTabInOwnProcess(name, knownTabs) {
+  let realUrl = HELPER_PAGE_URL + "?" + encodeURIComponent(name);
+  // Load and wait for about:blank.
+  let tab = await BrowserTestUtils.openNewForegroundTab({
+    gBrowser, opening: "about:blank", forceNewProcess: true,
+  });
+  let pid = tab.linkedBrowser.frameLoader.tabParent.osPid;
+  ok(!knownTabs.byName.has(name), "tab needs its own name: " + name);
+  ok(!knownTabs.byPid.has(pid), "tab needs to be in its own process: " + pid);
+
+  let knownTab = new KnownTab(name, tab);
+  knownTabs.byPid.set(pid, knownTab);
+  knownTabs.byName.set(name, knownTab);
+
+  // Now trigger the actual load of our page.
+  BrowserTestUtils.loadURI(tab.linkedBrowser, realUrl);
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
+  is(tab.linkedBrowser.frameLoader.tabParent.osPid, pid, "still same pid");
+  return knownTab;
+}
+
+/**
+ * Close all the tabs we opened.
+ */
+async function cleanupTabs(knownTabs) {
+  for (let knownTab of knownTabs.byName.values()) {
+    BrowserTestUtils.removeTab(knownTab.tab);
+    knownTab.cleanup();
+  }
+  knownTabs.cleanup();
+}
 
 /**
  * Wait for a LocalStorage flush to occur.  This notification can occur as a
@@ -20,10 +88,10 @@ function waitForLocalStorageFlush() {
 
   return new Promise(function(resolve) {
     let observer = {
-      observe: function() {
+      observe() {
         SpecialPowers.removeObserver(observer, "domstorage-test-flushed");
         resolve();
-      }
+      },
     };
     SpecialPowers.addObserver(observer, "domstorage-test-flushed");
   });
@@ -50,7 +118,7 @@ function triggerAndWaitForLocalStorageFlush() {
     // So issue a second flush and wait for that.
     SpecialPowers.notifyObservers(null, "domstorage-test-flush-force");
     return waitForLocalStorageFlush();
-  })
+  });
 }
 
 /**
@@ -262,7 +330,7 @@ add_task(async function() {
       // Enable LocalStorage's testing API so we can explicitly trigger a flush
       // when needed.
       ["dom.storage.testing", true],
-    ]
+    ],
   });
 
   // Ensure that there is no localstorage data or potential false positives for
@@ -290,14 +358,14 @@ add_task(async function() {
   await verifyTabPreload(readerTab, false);
 
   // - Configure the tabs.
-  const initialSentinel = 'initial';
+  const initialSentinel = "initial";
   const noSentinelCheck = null;
   await recordTabStorageEvents(listenerTab, initialSentinel);
 
   // - Issue the initial batch of writes and verify.
   info("initial writes");
   const initialWriteMutations = [
-    //[key (null=clear), newValue (null=delete), oldValue (verification)]
+    // [key (null=clear), newValue (null=delete), oldValue (verification)]
     ["getsCleared", "1", null],
     ["alsoGetsCleared", "2", null],
     [null, null, null],
@@ -308,12 +376,12 @@ add_task(async function() {
     ["getsDeletedImmediately", null, "5"],
     ["alsoStays", "6", null],
     ["getsDeletedLater", null, "4"],
-    ["clobbered", "post", "pre"]
+    ["clobbered", "post", "pre"],
   ];
   const initialWriteState = {
     stays: "3",
     clobbered: "post",
-    alsoStays: "6"
+    alsoStays: "6",
   };
 
   await mutateTabStorage(writerTab, initialWriteMutations, initialSentinel);
@@ -349,17 +417,17 @@ add_task(async function() {
   // it did not add an event listener.
 
   info("late writes");
-  const lateWriteSentinel = 'lateWrite';
+  const lateWriteSentinel = "lateWrite";
   const lateWriteMutations = [
     ["lateStays", "10", null],
     ["lateClobbered", "latePre", null],
     ["lateDeleted", "11", null],
     ["lateClobbered", "lastPost", "latePre"],
-    ["lateDeleted", null, "11"]
+    ["lateDeleted", null, "11"],
   ];
   const lateWriteState = Object.assign({}, initialWriteState, {
     lateStays: "10",
-    lateClobbered: "lastPost"
+    lateClobbered: "lastPost",
   });
 
   await recordTabStorageEvents(listenerTab, lateWriteSentinel);
@@ -379,17 +447,17 @@ add_task(async function() {
 
   // - Issue last set of writes from writerTab.
   info("last set of writes");
-  const lastWriteSentinel = 'lastWrite';
+  const lastWriteSentinel = "lastWrite";
   const lastWriteMutations = [
     ["lastStays", "20", null],
     ["lastDeleted", "21", null],
     ["lastClobbered", "lastPre", null],
     ["lastClobbered", "lastPost", "lastPre"],
-    ["lastDeleted", null, "21"]
+    ["lastDeleted", null, "21"],
   ];
   const lastWriteState = Object.assign({}, lateWriteState, {
     lastStays: "20",
-    lastClobbered: "lastPost"
+    lastClobbered: "lastPost",
   });
 
   await recordTabStorageEvents(listenerTab, lastWriteSentinel);
diff --git a/dom/tests/browser/browser_localStorage_privatestorageevent.js b/dom/tests/browser/browser_localStorage_privatestorageevent.js
index aa46bf1a9596..e8734946267c 100644
--- a/dom/tests/browser/browser_localStorage_privatestorageevent.js
+++ b/dom/tests/browser/browser_localStorage_privatestorageevent.js
@@ -1,14 +1,14 @@
 add_task(async function() {
   var privWin = OpenBrowserWindow({private: true});
   await new privWin.Promise(resolve => {
-    privWin.addEventListener('load', function() {
+    privWin.addEventListener("load", function() {
       resolve();
     }, {once: true});
   });
 
   var pubWin = OpenBrowserWindow({private: false});
   await new pubWin.Promise(resolve => {
-    pubWin.addEventListener('load', function() {
+    pubWin.addEventListener("load", function() {
       resolve();
     }, {once: true});
   });
@@ -26,13 +26,13 @@ add_task(async function() {
   // Check if pubWin can see privWin's storage events
   await ContentTask.spawn(pubBrowser, null, function(opts) {
     content.window.gotStorageEvent = false;
-    content.window.addEventListener('storage', ev => {
+    content.window.addEventListener("storage", ev => {
       content.window.gotStorageEvent = true;
     });
   });
 
   await ContentTask.spawn(privBrowser, null, function(opts) {
-    content.window.localStorage['key'] = 'ablooabloo';
+    content.window.localStorage.key = "ablooabloo";
   });
 
   let pubSaw = await ContentTask.spawn(pubBrowser, null, function(opts) {
@@ -43,7 +43,7 @@ add_task(async function() {
 
   await ContentTask.spawn(privBrowser, null, function(opts) {
     content.window.gotStorageEvent = false;
-    content.window.addEventListener('storage', ev => {
+    content.window.addEventListener("storage", ev => {
       content.window.gotStorageEvent = true;
     });
   });
@@ -51,13 +51,13 @@ add_task(async function() {
   // Check if privWin can see pubWin's storage events
   await ContentTask.spawn(privBrowser, null, function(opts) {
     content.window.gotStorageEvent = false;
-    content.window.addEventListener('storage', ev => {
+    content.window.addEventListener("storage", ev => {
       content.window.gotStorageEvent = true;
     });
   });
 
   await ContentTask.spawn(pubBrowser, null, function(opts) {
-    content.window.localStorage['key'] = 'ablooabloo';
+    content.window.localStorage.key = "ablooabloo";
   });
 
   let privSaw = await ContentTask.spawn(privBrowser, null, function(opts) {
diff --git a/dom/tests/browser/browser_noopener_null_uri.js b/dom/tests/browser/browser_noopener_null_uri.js
index 8d95a06068a4..237b1d00e42e 100644
--- a/dom/tests/browser/browser_noopener_null_uri.js
+++ b/dom/tests/browser/browser_noopener_null_uri.js
@@ -2,7 +2,7 @@ add_task(async function browserNoopenerNullUri() {
   await BrowserTestUtils.withNewTab({gBrowser}, async function(aBrowser) {
     let numTabs = gBrowser.tabs.length;
     await ContentTask.spawn(aBrowser, null, async () => {
-      ok(!content.window.open(undefined, undefined, 'noopener'),
+      ok(!content.window.open(undefined, undefined, "noopener"),
          "window.open should return null");
     });
     await TestUtils.waitForCondition(() => gBrowser.tabs.length == numTabs + 1);
diff --git a/dom/tests/browser/browser_persist_cookies.js b/dom/tests/browser/browser_persist_cookies.js
index 78f3966f3bbc..952b1619d118 100644
--- a/dom/tests/browser/browser_persist_cookies.js
+++ b/dom/tests/browser/browser_persist_cookies.js
@@ -87,7 +87,7 @@ add_task(async function() {
             dls.removeFinished();
             resolve();
           }
-        }
+        },
       });
     });
   });
diff --git a/dom/tests/browser/browser_persist_mixed_content_image.js b/dom/tests/browser/browser_persist_mixed_content_image.js
index f7af5f1790cb..3bc95bcef5c3 100644
--- a/dom/tests/browser/browser_persist_mixed_content_image.js
+++ b/dom/tests/browser/browser_persist_mixed_content_image.js
@@ -82,7 +82,7 @@ add_task(async function test_image_download() {
             dls.removeFinished();
             resolve(download);
           }
-        }
+        },
       });
     });
     // open the context menu.
diff --git a/dom/tests/browser/browser_test_new_window_from_content.js b/dom/tests/browser/browser_test_new_window_from_content.js
index 3d19f85d0093..b7c526ad53c9 100644
--- a/dom/tests/browser/browser_test_new_window_from_content.js
+++ b/dom/tests/browser/browser_test_new_window_from_content.js
@@ -106,7 +106,7 @@ registerCleanupFunction(function() {
  */
 function prepareForResult(aBrowser, aExpectation) {
   let expectedSpec = kContentDoc.replace(/[^\/]*$/, "dummy.html");
-  switch(aExpectation) {
+  switch (aExpectation) {
     case kSameTab:
       return (async function() {
         await BrowserTestUtils.browserLoaded(aBrowser);
@@ -133,7 +133,7 @@ function prepareForResult(aBrowser, aExpectation) {
       })();
       break;
     default:
-      ok(false, "prepareForResult can't handle an expectation of " + aExpectation)
+      ok(false, "prepareForResult can't handle an expectation of " + aExpectation);
       return;
   }
 
diff --git a/dom/tests/browser/browser_test_toolbars_visibility.js b/dom/tests/browser/browser_test_toolbars_visibility.js
index eb825a1589f4..eeca246357b6 100644
--- a/dom/tests/browser/browser_test_toolbars_visibility.js
+++ b/dom/tests/browser/browser_test_toolbars_visibility.js
@@ -44,7 +44,7 @@ function getToolbarsFromWindowChrome(win) {
     personalbar: win.personalbar.visible,
     statusbar: win.statusbar.visible,
     locationbar: win.locationbar.visible,
-  }
+  };
 }
 
 /**
diff --git a/dom/tests/browser/browser_xhr_sandbox.js b/dom/tests/browser/browser_xhr_sandbox.js
index d80fee9f89a1..0bdd40207e0f 100644
--- a/dom/tests/browser/browser_xhr_sandbox.js
+++ b/dom/tests/browser/browser_xhr_sandbox.js
@@ -15,7 +15,7 @@ var sandboxCode = (function() {
       } else {
         result = "ok";
       }
-      postMessage({result: result}, "*");
+      postMessage({result}, "*");
     }
   };
   req.send(null);
@@ -30,7 +30,7 @@ function test() {
   frame.setAttribute("type", "content");
   frame.setAttribute("src", "http://mochi.test:8888/browser/dom/tests/browser/browser_xhr_sandbox.js");
 
-  frame.addEventListener("load", function () {
+  frame.addEventListener("load", function() {
     let workerWindow = frame.contentWindow;
     workerWindow.addEventListener("message", function(evt) {
       is(evt.data.result, "ok", "check the sandbox code was happy");
diff --git a/dom/tests/browser/helper_largeAllocation.js b/dom/tests/browser/helper_largeAllocation.js
index 991347d431d9..456b47bcb430 100644
--- a/dom/tests/browser/helper_largeAllocation.js
+++ b/dom/tests/browser/helper_largeAllocation.js
@@ -68,8 +68,8 @@ async function largeAllocSuccessTests() {
       ["dom.largeAllocation.forceEnable", !isWin32],
       // Increase processCount.webLargeAllocation to avoid any races where
       // processes aren't being cleaned up quickly enough.
-      ["dom.ipc.processCount.webLargeAllocation", 20]
-    ]
+      ["dom.ipc.processCount.webLargeAllocation", 20],
+    ],
   });
 
   // A toplevel tab should be able to navigate cross process!
@@ -106,7 +106,7 @@ async function largeAllocSuccessTests() {
       content.document.body.innerHTML = `<iframe src='${TEST_URI}'></iframe>`;
 
       return new Promise(resolve => {
-        content.document.body.querySelector('iframe').onload = () => {
+        content.document.body.querySelector("iframe").onload = () => {
           ok(true, "Iframe finished loading");
           resolve();
         };
@@ -131,11 +131,11 @@ async function largeAllocSuccessTests() {
     let stopExpectNoProcess = expectNoProcess();
 
     let loaded = ContentTask.spawn(aBrowser, TEST_URI, TEST_URI => {
-      content.document.body.innerHTML = '<button>CLICK ME</button>';
+      content.document.body.innerHTML = "<button>CLICK ME</button>";
 
       return new Promise(resolve => {
-        content.document.querySelector('button').onclick = e => {
-          let w = content.window.open(TEST_URI, '_blank');
+        content.document.querySelector("button").onclick = e => {
+          let w = content.window.open(TEST_URI, "_blank");
           w.onload = () => {
             ok(true, "Window finished loading");
             w.close();
@@ -440,7 +440,7 @@ async function largeAllocSuccessTests() {
     info("Starting test 8");
     await SpecialPowers.pushPrefEnv({
       set: [
-        ["dom.ipc.processCount.webLargeAllocation", 1]
+        ["dom.ipc.processCount.webLargeAllocation", 1],
       ],
     });
 
@@ -512,7 +512,7 @@ async function largeAllocSuccessTests() {
     info("Starting test 10");
     await SpecialPowers.pushPrefEnv({
       set: [
-        ["dom.ipc.processCount.webLargeAllocation", 1]
+        ["dom.ipc.processCount.webLargeAllocation", 1],
       ],
     });
 
@@ -576,7 +576,7 @@ async function largeAllocSuccessTests() {
       ContentTask.spawn(aBrowser, null, () => {
         content.document.querySelector("#submit").click();
       }),
-      BrowserTestUtils.browserLoaded(aBrowser)
+      BrowserTestUtils.browserLoaded(aBrowser),
     ]);
 
     let innerText = await ContentTask.spawn(aBrowser, null, () => {
diff --git a/dom/tests/browser/page_localstorage_e10s.html b/dom/tests/browser/page_localstorage_e10s.html
index c5e932e0c28e..8afc8f82e3fe 100644
--- a/dom/tests/browser/page_localstorage_e10s.html
+++ b/dom/tests/browser/page_localstorage_e10s.html
@@ -51,7 +51,7 @@ window.addEventListener(
 
 // Key that conveys the end of a write batch.  Filtered out from state and
 // events.
-const SENTINEL_KEY = 'WRITE_BATCH_SENTINEL';
+const SENTINEL_KEY = "WRITE_BATCH_SENTINEL";
 
 var storageEventsPromise = null;
 function listenForStorageEvents(sentinelValue) {
diff --git a/dom/tests/browser/perfmetrics/browser_test_performance_metrics.js b/dom/tests/browser/perfmetrics/browser_test_performance_metrics.js
index f4c095720f6a..5c08f19d081e 100644
--- a/dom/tests/browser/perfmetrics/browser_test_performance_metrics.js
+++ b/dom/tests/browser/perfmetrics/browser_test_performance_metrics.js
@@ -20,10 +20,10 @@ function jsonrpc(tab, method, params) {
   let messageManager = tab.linkedBrowser.messageManager;
   messageManager.sendAsyncMessage("jsonrpc", {
     id: currentId,
-    method: method,
-    params: params
+    method,
+    params,
   });
-  return new Promise(function (resolve, reject) {
+  return new Promise(function(resolve, reject) {
     messageManager.addMessageListener("jsonrpc", function listener(event) {
       let { id, result, error } = event.data;
       if (id !== currentId) {
@@ -49,15 +49,15 @@ add_task(async function test() {
 
   // Load 3 pages and wait. The 3rd one has a worker
   let page1 = await BrowserTestUtils.openNewForegroundTab({
-    gBrowser, opening: "about:about", forceNewProcess: false
+    gBrowser, opening: "about:about", forceNewProcess: false,
   });
 
   let page2 = await BrowserTestUtils.openNewForegroundTab({
-    gBrowser, opening: "about:memory", forceNewProcess: false
+    gBrowser, opening: "about:memory", forceNewProcess: false,
   });
 
   let page3 = await BrowserTestUtils.openNewForegroundTab({
-    gBrowser, opening: WORKER_URL
+    gBrowser, opening: WORKER_URL,
   });
   // load a 4th tab with a worker
   await BrowserTestUtils.withNewTab({ gBrowser, url: WORKER_URL2 },
@@ -90,7 +90,7 @@ add_task(async function test() {
         sharedWorker = entry.host.endsWith("shared_worker.js") || sharedWorker;
         heapUsage += entry.memoryInfo.GCHeapUsage;
         mediaMemory += entry.memoryInfo.media.audioSize + entry.memoryInfo.media.resourcesSize;
-        Assert.ok(entry.host != "" || entry.windowId !=0,
+        Assert.ok(entry.host != "" || entry.windowId != 0,
                   "An entry should have a host or a windowId");
         if (entry.windowId != 0 && !entry.isToplevel && !entry.isWorker && !subFrameIds.includes(entry.windowId)) {
           subFrameIds.push(entry.windowId);
diff --git a/dom/tests/browser/perfmetrics/ping_worker.html b/dom/tests/browser/perfmetrics/ping_worker.html
index 55a5773930d0..c576dbcb22dc 100644
--- a/dom/tests/browser/perfmetrics/ping_worker.html
+++ b/dom/tests/browser/perfmetrics/ping_worker.html
@@ -8,14 +8,14 @@
   var shared;
 
   function init() {
-   myWorker = new Worker('ping_worker.js');
+   myWorker = new Worker("ping_worker.js");
    for (let i = 0; i++; i < 10) myWorker.postMessage("ping");
 
-   shared = new SharedWorker('shared_worker.js');
+   shared = new SharedWorker("shared_worker.js");
    shared.port.start();
    shared.port.onmessage = function(e) {
      console.log(e);
-   }
+   };
   }
 
   </script>
diff --git a/dom/tests/browser/perfmetrics/ping_worker2.html b/dom/tests/browser/perfmetrics/ping_worker2.html
index daf2d58c6e9c..6f6dfc66e485 100644
--- a/dom/tests/browser/perfmetrics/ping_worker2.html
+++ b/dom/tests/browser/perfmetrics/ping_worker2.html
@@ -7,7 +7,7 @@
   var shared;
 
   function init() {
-   shared = new SharedWorker('shared_worker.js');
+   shared = new SharedWorker("shared_worker.js");
    shared.port.start();
    for (let i = 0; i++; i < 10) shared.port.postMessage(["ok"]);
   }
diff --git a/dom/tests/browser/shared_worker.js b/dom/tests/browser/shared_worker.js
index 92702fdc77fc..f2fd14951e1e 100644
--- a/dom/tests/browser/shared_worker.js
+++ b/dom/tests/browser/shared_worker.js
@@ -3,7 +3,7 @@ onconnect = function(e) {
   var port = e.ports[0];
 
   port.onmessage = function(e) {
-    var workerResult = 'Result: ' + (e.data[0] * e.data[1]);
+    var workerResult = "Result: " + (e.data[0] * e.data[1]);
     port.postMessage(e.data[0]);
-  }
-}
+  };
+};
diff --git a/dom/tests/browser/test-console-api.html b/dom/tests/browser/test-console-api.html
index b34cc08d5c3c..5bd28683334f 100644
--- a/dom/tests/browser/test-console-api.html
+++ b/dom/tests/browser/test-console-api.html
@@ -4,11 +4,11 @@
     <script type="text/javascript">
       window.foobar585956c = function(a) {
         console.trace();
-        return a+"c";
+        return a + "c";
       };
 
       function foobar585956b(a) {
-        return foobar585956c(a+"b");
+        return foobar585956c(a + "b");
       }
 
       function foobar585956a(omg) {
@@ -33,7 +33,7 @@
       }
 
       function test() {
-        var str = "Test Message."
+        var str = "Test Message.";
         console.foobar(str); // if this throws, we don't execute following funcs
         console.log(str);
         console.info(str);
diff --git a/dom/tests/browser/test_bug1004814.html b/dom/tests/browser/test_bug1004814.html
index 64d056ecfd8c..6fca2cac4886 100644
--- a/dom/tests/browser/test_bug1004814.html
+++ b/dom/tests/browser/test_bug1004814.html
@@ -6,7 +6,7 @@
   <body>
     <script>
 
-var w = new Worker('worker_bug1004814.js');
+var w = new Worker("worker_bug1004814.js");
 w.postMessage(true);
 
     </script>
diff --git a/dom/tests/browser/test_new_window_from_content_child.html b/dom/tests/browser/test_new_window_from_content_child.html
index e5b8e01e63e6..9e3f7016d9c0 100644
--- a/dom/tests/browser/test_new_window_from_content_child.html
+++ b/dom/tests/browser/test_new_window_from_content_child.html
@@ -13,12 +13,12 @@
 </html>
 
 <script>
-function openWindow(aFeatures="") {
+function openWindow(aFeatures = "") {
   window.open("dummy.html", "_blank", aFeatures);
   return false;
 }
 
-function openBlankWindow(aFeatures="") {
+function openBlankWindow(aFeatures = "") {
   window.open("", "_blank", aFeatures);
   return false;
 }
diff --git a/dom/tests/browser/worker_bug1004814.js b/dom/tests/browser/worker_bug1004814.js
index f49fe8dc8c36..8a224ae97ba5 100644
--- a/dom/tests/browser/worker_bug1004814.js
+++ b/dom/tests/browser/worker_bug1004814.js
@@ -1,6 +1,6 @@
 onmessage = function(evt) {
-  console.time('bug1004814');
+  console.time("bug1004814");
   setTimeout(function() {
-    console.timeEnd('bug1004814');
+    console.timeEnd("bug1004814");
   }, 200);
-}
+};