Merge inbound to mozilla-central. a=merge

--HG--
extra : amend_source : 39c72a7f01f9afa5abf7587d732d1e63969cc9da

accessible/tests/mochitest/browser.js

@@ -119,7 +119,7 @@ function openBrowserWindowIntl() {
     }
   }
 
-  gBrowserContext.browserWnd = window.openDialog(
+  gBrowserContext.browserWnd = window.docShell.rootTreeItem.domWindow.openDialog(
     AppConstants.BROWSER_CHROME_URL,
     "_blank",
     params,

accessible/tests/mochitest/events/docload/test_docload_root.html

@@ -38,7 +38,7 @@
 
       this.eventSeq = [ new invokerChecker(EVENT_REORDER, gRootAcc) ];
 
-      this.invoke = () => (gDialog = window.openDialog(aURL));
+      this.invoke = () => (gDialog = docShell.rootTreeItem.domWindow.openDialog(aURL));
 
       this.finalCheck = () => {
         const accTree = {

accessible/tests/mochitest/events/docload/test_docload_shutdown.html

@@ -54,7 +54,7 @@
       ];
 
 
-      this.invoke = () => gDialog = window.openDialog(aURL);
+      this.invoke = () => gDialog = window.docShell.rootTreeItem.domWindow.openDialog(aURL);
 
       this.finalCheck = () => {
         const accTree = {

accessible/tests/mochitest/focus/test_focusedChild.html

@@ -24,7 +24,8 @@
                                            this) ];
 
       this.invoke = function openWnd_invoke() {
-        this.dialog = window.openDialog("about:mozilla",
+        this.dialog = window.docShell.rootTreeItem.domWindow
+                            .openDialog("about:mozilla",
                                         "AboutMozilla",
                                         "chrome,width=600,height=600");
       };

browser/base/content/test/general/browser_bug484315.js

@@ -1,24 +1,14 @@
-function test() {
+add_task(async function test() {
-  var contentWin = window.open("about:blank", "", "width=100,height=100");
+  window.open("about:blank", "", "width=100,height=100,noopener");
-  for (let win of Services.wm.getEnumerator("navigator:browser")) {
-    if (win.content == contentWin) {
-      Services.prefs.setBoolPref("browser.tabs.closeWindowWithLastTab", false);
-      win.gBrowser.removeCurrentTab();
-      ok(win.closed, "popup is closed");
 
-      // clean up
+  let win = Services.wm.getMostRecentWindow("navigator:browser");
-      if (!win.closed) {
+  Services.prefs.setBoolPref("browser.tabs.closeWindowWithLastTab", false);
-        win.close();
+  win.gBrowser.removeCurrentTab();
-      }
+  ok(win.closed, "popup is closed");
-      if (
-        Services.prefs.prefHasUserValue("browser.tabs.closeWindowWithLastTab")
-      ) {
-        Services.prefs.clearUserPref("browser.tabs.closeWindowWithLastTab");
-      }
 
-      return;
+  // clean up
-    }
+  if (!win.closed) {
+    win.close();
   }
-
+  Services.prefs.clearUserPref("browser.tabs.closeWindowWithLastTab");
-  throw new Error("couldn't find the content window");
+});
-}

browser/base/content/test/general/browser_fullscreen-window-open.js

@@ -181,6 +181,7 @@ function test_open_from_chrome() {
     message: {
       title: "test_open_from_chrome",
       param: "",
+      option: "noopener",
     },
     finalizeFn() {},
   });

browser/components/extensions/test/browser/browser_ext_sidebarAction.js

@@ -180,7 +180,8 @@ add_task(async function sidebar_isOpen() {
   });
 
   info("Open a new window");
-  let newWin = open();
+  open("", "", "noopener");
+  let newWin = Services.wm.getMostRecentWindow("navigator:browser");
 
   info("The new window has no sidebar");
   await sendMessage(extension1, "isOpen", { result: false });

browser/components/preferences/in-content/subdialogs.js

@@ -100,7 +100,8 @@ SubDialog.prototype = {
     this._addDialogEventListeners();
 
     let features =
-      (aFeatures ? aFeatures + "," : "") + "resizable,dialog=no,centerscreen";
+      (aFeatures ? aFeatures + "," : "") +
+      "resizable,dialog=no,centerscreen,chrome=no";
     let dialog = window.openDialog(
       aURL,
       `dialogFrame-${this._id}`,

browser/modules/SiteDataManager.jsm

@@ -508,7 +508,7 @@ var SiteDataManager = {
         allowed: false,
       };
       let features = "centerscreen,chrome,modal,resizable=no";
-      win.openDialog(
+      win.docShell.rootTreeItem.domWindow.openDialog(
         "chrome://browser/content/preferences/siteDataRemoveSelected.xul",
         "",
         features,

devtools/client/responsive/test/browser/browser_window_close.js

@@ -5,7 +5,7 @@
 
 add_task(async function() {
   const newWindowPromise = BrowserTestUtils.waitForNewWindow();
-  window.open("data:text/html;charset=utf-8,", "_blank");
+  window.open("data:text/html;charset=utf-8,", "_blank", "noopener,all");
   const newWindow = await newWindowPromise;
 
   newWindow.focus();

devtools/client/shared/test/browser_dbg_multiple-windows.js

@@ -112,6 +112,6 @@ async function continue_remove_tab(client, tab) {
 async function addWindow(url) {
   info("Adding window: " + url);
   const onNewWindow = BrowserTestUtils.waitForNewWindow({ url });
-  window.open(url);
+  window.open(url, "_blank", "noopener");
   return onNewWindow;
 }

docshell/base/BrowsingContext.cpp

@@ -102,6 +102,8 @@ already_AddRefed<BrowsingContext> BrowsingContext::Create(
     Type aType) {
   MOZ_DIAGNOSTIC_ASSERT(!aParent || aParent->mType == aType);
 
+  MOZ_DIAGNOSTIC_ASSERT(aType != Type::Chrome || XRE_IsParentProcess());
+
   uint64_t id = nsContentUtils::GenerateBrowsingContextId();
 
   MOZ_LOG(GetLog(), LogLevel::Debug,
@@ -124,6 +126,8 @@ already_AddRefed<BrowsingContext> BrowsingContext::Create(
   // using transactions to set them, as we haven't been attached yet.
   context->mName = aName;
   if (aOpener) {
+    MOZ_DIAGNOSTIC_ASSERT(aOpener->Group() == context->Group());
+    MOZ_DIAGNOSTIC_ASSERT(aOpener->mType == context->mType);
     context->mOpenerId = aOpener->Id();
     context->mHadOriginalOpener = true;
   }
@@ -1052,7 +1056,7 @@ void BrowsingContext::Transaction::Apply(BrowsingContext* aBrowsingContext) {
 }
 
 BrowsingContext::IPCInitializer BrowsingContext::GetIPCInitializer() {
-  // FIXME: We should assert that we're loaded in-content here. (bug 1553804)
+  MOZ_DIAGNOSTIC_ASSERT(mType == Type::Content);
 
   IPCInitializer init;
   init.mId = Id();

docshell/base/BrowsingContext.h

@@ -213,12 +213,14 @@ class BrowsingContext : public nsWrapperCache, public BrowsingContextBase {
   already_AddRefed<BrowsingContext> GetOpener() const {
     RefPtr<BrowsingContext> opener(Get(mOpenerId));
     if (!mIsDiscarded && opener && !opener->mIsDiscarded) {
+      MOZ_DIAGNOSTIC_ASSERT(opener->mType == mType);
       return opener.forget();
     }
     return nullptr;
   }
   void SetOpener(BrowsingContext* aOpener) {
     MOZ_DIAGNOSTIC_ASSERT(!aOpener || aOpener->Group() == Group());
+    MOZ_DIAGNOSTIC_ASSERT(!aOpener || aOpener->mType == mType);
     SetOpenerId(aOpener ? aOpener->Id() : 0);
   }
 

docshell/test/browser/browser_bug388121-2.js

@@ -38,7 +38,8 @@ function test() {
 
   function doTest() {
     uri = uris[iteration - 1];
-    w = window.open(uri, "_blank", "width=10,height=10");
+    window.open(uri, "_blank", "width=10,height=10,noopener");
+    w = Services.wm.getMostRecentWindow("navigator:browser").content;
     var prin = w.document.nodePrincipal;
     if (!uri) {
       uri = undefined;

docshell/test/chrome/bug112564_window.xul

@@ -22,11 +22,11 @@
     var gExpected = [];
 
     function ok(condition, message) {
-      window.opener.wrappedJSObject.SimpleTest.ok(condition, message);
+      window.arguments[0].SimpleTest.ok(condition, message);
     }
 
     function is(a, b, message) {
-      window.opener.wrappedJSObject.SimpleTest.is(a, b, message);
+      window.arguments[0].SimpleTest.is(a, b, message);
     }
 
     function finish() {
@@ -39,7 +39,7 @@
       history.legacySHistory.PurgeHistory(history.count);
 
       window.close();
-      window.opener.wrappedJSObject.SimpleTest.finish();
+      window.arguments[0].SimpleTest.finish();
     }
 
     function onLoad() {

docshell/test/chrome/bug113934_window.xul

@@ -16,7 +16,7 @@
     var imports = [ "SimpleTest", "is", "isnot", "ok", "snapshotWindow",
                     "compareSnapshots", "onerror" ];
     for (var name of imports) {
-      window[name] = window.opener.wrappedJSObject[name];
+      window[name] = window.arguments[0][name];
     }
 
     function $(id) {

docshell/test/chrome/bug215405_window.xul

@@ -17,7 +17,7 @@
     const {BrowserTestUtils} = ChromeUtils.import("resource://testing-common/BrowserTestUtils.jsm");
     var imports = [ "SimpleTest", "is", "isnot", "ok"];
     for (var name of imports) {
-      window[name] = window.opener.wrappedJSObject[name];
+      window[name] = window.arguments[0][name];
     }
 
     const text="MOZILLA";
@@ -38,7 +38,7 @@
       history.legacySHistory.PurgeHistory(history.count);
 
       window.close();
-      window.opener.wrappedJSObject.SimpleTest.finish();
+      window.arguments[0].SimpleTest.finish();
     }
 
     function onLoad(e) {

docshell/test/chrome/bug364461_window.xul

@@ -22,10 +22,10 @@
     var gExpected = [];
 
     function ok(condition, message) {
-      window.opener.wrappedJSObject.SimpleTest.ok(condition, message);
+      window.arguments[0].SimpleTest.ok(condition, message);
     }
     function is(a, b, message) {
-      window.opener.wrappedJSObject.SimpleTest.is(a, b, message);
+      window.arguments[0].SimpleTest.is(a, b, message);
     }
     function finish() {
       for (let eventType of LISTEN_EVENTS) {
@@ -33,7 +33,7 @@
       }
     
       window.close();
-      window.opener.wrappedJSObject.SimpleTest.finish();
+      window.arguments[0].SimpleTest.finish();
     }
 
     function onLoad() {

docshell/test/chrome/bug396519_window.xul

@@ -23,10 +23,10 @@
     var gExpected = [];
 
     function ok(condition, message) {
-      window.opener.wrappedJSObject.SimpleTest.ok(condition, message);
+      window.arguments[0].SimpleTest.ok(condition, message);
     }
     function is(a, b, message) {
-      window.opener.wrappedJSObject.SimpleTest.is(a, b, message);
+      window.arguments[0].SimpleTest.is(a, b, message);
     }
     function finish() {
       for (let eventType of LISTEN_EVENTS) {
@@ -34,7 +34,7 @@
       }
     
       window.close();
-      window.opener.wrappedJSObject.SimpleTest.finish();
+      window.arguments[0].SimpleTest.finish();
     }
 
     function onLoad() {

docshell/test/chrome/bug449778_window.xul

@@ -10,7 +10,7 @@
   <script type="application/javascript"><![CDATA[
     var imports = [ "SimpleTest", "is", "isnot", "ok", "onerror" ];
     for (var name of imports) {
-      window[name] = window.opener.wrappedJSObject[name];
+      window[name] = window.arguments[0][name];
     }
 
     function $(id) {

docshell/test/chrome/bug449780_window.xul

@@ -10,7 +10,7 @@
   <script type="application/javascript"><![CDATA[
     var imports = [ "SimpleTest", "is", "isnot", "ok", "onerror" ];
     for (var name of imports) {
-      window[name] = window.opener.wrappedJSObject[name];
+      window[name] = window.arguments[0][name];
     }
 
     function $(id) {

docshell/test/chrome/bug89419_window.xul

@@ -20,7 +20,7 @@
     //
     async function runTests() {
       // Disable rcwn to make cache behavior deterministic.
-      var {SpecialPowers} = opener;
+      var {SpecialPowers} = window.arguments[0];
       await SpecialPowers.pushPrefEnv({"set":[["network.http.rcwn.enabled", false]]});
 
       // Load a test page containing an image referring to the sjs that returns

docshell/test/chrome/bug92598_window.xul

@@ -22,11 +22,11 @@
     var gExpected = [];
 
     function ok(condition, message) {
-      window.opener.wrappedJSObject.SimpleTest.ok(condition, message);
+      window.arguments[0].SimpleTest.ok(condition, message);
     }
 
     function is(a, b, message) {
-      window.opener.wrappedJSObject.SimpleTest.is(a, b, message);
+      window.arguments[0].SimpleTest.is(a, b, message);
     }
 
     function finish() {
@@ -39,7 +39,7 @@
       history.legacySHistory.PurgeHistory(history.count);
 
       window.close();
-      window.opener.wrappedJSObject.SimpleTest.finish();
+      window.arguments[0].SimpleTest.finish();
     }
 
     function onLoad() {

docshell/test/chrome/docshell_helpers.js

@@ -1,3 +1,6 @@
+if (!window.opener && window.arguments) {
+  window.opener = window.arguments[0];
+}
 /**
  * Import common SimpleTest methods so that they're usable in this window.
  */

docshell/test/chrome/mozFrameType_window.xul

@@ -12,8 +12,8 @@
   <script type="application/javascript" src="docshell_helpers.js" />
   <script type="application/javascript"><![CDATA[
     function runTests() {
-      let opener = window.opener;
+      let opener = window.arguments[0];
-      let SimpleTest = opener.wrappedJSObject.SimpleTest;
+      let SimpleTest = opener.SimpleTest;
 
       function getDocShellType(frame) {
         return frame.contentWindow.docShell.itemType;

docshell/test/chrome/test_bug112564.xul

@@ -28,8 +28,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=112564
 /** Test for Bug 112564 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug112564_window.xul", "bug112564",
+window.openDialog("bug112564_window.xul", "bug112564",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug113934.xul

@@ -21,8 +21,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=113934
     SimpleTest.waitForExplicitFinish();
 
     addLoadEvent(function() {
-      window.open("bug113934_window.xul?content", "bug113934",
+      window.openDialog("bug113934_window.xul?content", "bug113934",
-                  "chrome,width=800,height=800");
+                        "chrome,width=800,height=800,noopener", window);
     });
 
   ]]></script>

docshell/test/chrome/test_bug215405.xul

@@ -28,8 +28,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=215405
 /** Test for Bug 215405 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug215405_window.xul", "bug215405",
+window.openDialog("bug215405_window.xul", "bug215405",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug293235.xul

@@ -29,8 +29,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=293235.xul
 /** Test for Bug 293235 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug293235_window.xul", "bug293235",
+window.openDialog("bug293235_window.xul", "bug293235",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug294258.xul

@@ -29,8 +29,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=294258.xul
 /** Test for Bug 294258 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug294258_window.xul", "bug294258",
+window.openDialog("bug294258_window.xul", "bug294258",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug298622.xul

@@ -29,8 +29,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=298622.xul
 /** Test for Bug 298622 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug298622_window.xul", "bug298622",
+window.openDialog("bug298622_window.xul", "bug298622",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug301397.xul

@@ -29,8 +29,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=301397.xul
 /** Test for Bug 301397 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug301397_window.xul", "bug301397",
+window.openDialog("bug301397_window.xul", "bug301397",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug303267.xul

@@ -30,8 +30,8 @@ SimpleTest.expectAssertions(0, 1);
 /** Test for Bug 303267 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug303267_window.xul", "bug303267",
+window.openDialog("bug303267_window.xul", "bug303267",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug311007.xul

@@ -33,8 +33,8 @@ if (navigator.platform.startsWith("Win")) {
 /** Test for Bug 311007 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug311007_window.xul", "bug311007",
+window.openDialog("bug311007_window.xul", "bug311007",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug321671.xul

@@ -29,8 +29,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=321671.xul
 /** Test for Bug 321671 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug321671_window.xul", "bug321671",
+window.openDialog("bug321671_window.xul", "bug321671",
-            "chrome,width=600,height=600,scrollbars");
+                  "chrome,width=600,height=600,scrollbars,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug360511.xul

@@ -30,8 +30,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=360511.xul
 /** Test for Bug 360511 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug360511_window.xul", "bug360511",
+window.openDialog("bug360511_window.xul", "bug360511",
-            "chrome,scrollbars,width=600,height=600");
+                  "chrome,scrollbars,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug364461.xul

@@ -34,8 +34,8 @@ SpecialPowers.pushPrefEnv({
 }, runTests);
 
 function runTests() {
-  window.open("bug364461_window.xul", "bug364461",
+  window.openDialog("bug364461_window.xul", "bug364461",
-              "chrome,width=600,height=600");
+                    "chrome,width=600,height=600,noopener", window);
 }
 ]]>
 </script>

docshell/test/chrome/test_bug396519.xul

@@ -21,8 +21,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=396519
     /** Test for Bug 396519 **/
 
     SimpleTest.waitForExplicitFinish();
-    window.open("bug396519_window.xul", "bug396519",
+    window.openDialog("bug396519_window.xul", "bug396519",
-                "chrome,width=600,height=600");
+                      "chrome,width=600,height=600,noopener", window);
 
   ]]></script>
 </window>

docshell/test/chrome/test_bug396649.xul

@@ -32,8 +32,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=396649.xul
 /** Test for Bug 396649 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug396649_window.xul", "bug396649",
+window.openDialog("bug396649_window.xul", "bug396649",
-            "chrome,width=600,height=600,scrollbars");
+                  "chrome,width=600,height=600,scrollbars,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug449778.xul

@@ -21,8 +21,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=449778
     SimpleTest.waitForExplicitFinish();
 
     addLoadEvent(function() {
-      window.open("bug449778_window.xul", "bug449778",
+      window.openDialog("bug449778_window.xul", "bug449778",
-                  "chrome,width=800,height=800");
+                        "chrome,width=800,height=800,noopener", window);
     });
 
   ]]></script>

docshell/test/chrome/test_bug449780.xul

@@ -21,8 +21,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=449780
     SimpleTest.waitForExplicitFinish();
 
     addLoadEvent(function() {
-      window.open("bug449780_window.xul", "bug449780",
+      window.openDialog("bug449780_window.xul", "bug449780",
-                  "chrome,width=800,height=800");
+                        "chrome,width=800,height=800,noopener", window);
     });
 
   ]]></script>

docshell/test/chrome/test_bug456980.xul

@@ -21,8 +21,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=456980
     SimpleTest.waitForExplicitFinish();
 
     addLoadEvent(function() {
-      window.open("bug113934_window.xul?chrome", "bug456980",
+      window.openDialog("bug113934_window.xul?chrome", "bug456980",
-                  "chrome,width=800,height=800");
+                        "chrome,width=800,height=800,noopener", window);
     });
 
   ]]></script>

docshell/test/chrome/test_bug582176.xul

@@ -29,8 +29,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=582176.xul
 /** Test for Bug 582176 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug582176_window.xul", "bug582176",
+window.openDialog("bug582176_window.xul", "bug582176",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug608669.xul

@@ -28,6 +28,8 @@ function nextTest() {
   gen.next();
 }
 
+let chromeWindow = docShell.rootTreeItem.domWindow;
+
 function* doTest() {
   var notificationCount = 0;
   var observer = {
@@ -48,24 +50,26 @@ function* doTest() {
   is(notificationCount, 0, "initial count");
 
   // create a new window
-  var testWin = window.open("", "bug 608669", "chrome,width=600,height=600");
+  var testWin = chromeWindow.open("", "bug 608669", "chrome,width=600,height=600");
   testWin.x = "y";
   is(notificationCount, 1, "after created window");
 
   // Try loading in the window
   testWin.location = "bug608669.xul";
-  window.onmessage = nextTest;
+  chromeWindow.onmessage = nextTest;
   yield undefined;
   is(notificationCount, 1, "after first load");
   is(testWin.x, "y", "reused window");
 
   // Try loading again in the window
   testWin.location = "bug608669.xul?x";
-  window.onmessage = nextTest;
+  chromeWindow.onmessage = nextTest;
   yield undefined;
   is(notificationCount, 2, "after second load");
   is("x" in testWin, false, "didn't reuse window");
 
+  chromeWindow.onmessage = null;
+
   testWin.close();
 
   os.removeObserver(observer, "chrome-document-global-created");

docshell/test/chrome/test_bug662200.xul

@@ -29,8 +29,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=662200.xul
 /** Test for Bug 662200 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug662200_window.xul", "bug662200",
+window.openDialog("bug662200_window.xul", "bug662200",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug690056.xul

@@ -19,8 +19,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=690056
   <![CDATA[
   /** Test for Bug 690056 **/
 SimpleTest.waitForExplicitFinish();
-window.open("bug690056_window.xul", "bug690056",
+window.openDialog("bug690056_window.xul", "bug690056",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
   ]]>
   </script>
 </window>

docshell/test/chrome/test_bug89419.xul

@@ -29,8 +29,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=89419.xul
 /** Test for Bug 89419 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug89419_window.xul", "bug89419",
+window.openDialog("bug89419_window.xul", "bug89419",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_bug92598.xul

@@ -28,8 +28,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=92598
 /** Test for Bug 92598 **/
 
 SimpleTest.waitForExplicitFinish();
-window.open("bug92598_window.xul", "bug92598",
+window.openDialog("bug92598_window.xul", "bug92598",
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

docshell/test/chrome/test_mozFrameType.xul

@@ -32,8 +32,8 @@ if (navigator.platform.startsWith("Win")) {
 SimpleTest.waitForExplicitFinish();
 
 addLoadEvent(function () {
-  window.open("mozFrameType_window.xul", "mozFrameType",
+  window.openDialog("mozFrameType_window.xul", "mozFrameType",
-              "chrome,width=600,height=600");
+                    "chrome,width=600,height=600,noopener", window);
 });
 
 ]]>

docshell/test/chrome/test_principalInherit.xul

@@ -61,7 +61,7 @@ var tests = [
     // force creation of a content viewer.
     let xulWinURL = 'data:application/vnd.mozilla.xul+xml,<?xml version="1.0"?>' +
                     '<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"/>';
-    let newWin = window.openDialog(xulWinURL, "chrome_window", "chrome");
+    let newWin = docShell.rootTreeItem.domWindow.openDialog(xulWinURL, "chrome_window", "chrome");
     loadListener(newWin, function () {
       let frame = newWin.document.createXULElement("iframe");
       frame.setAttribute("type", "content");

dom/base/test/chrome/cpows_parent.xul

@@ -18,19 +18,19 @@
     var savedMM = null;
 
     function info(message) {
-      return opener.wrappedJSObject.info(message);
+      return window.arguments[0].info(message);
     }
 
     function ok(condition, message) {
-      return opener.wrappedJSObject.ok(condition, message);
+      return window.arguments[0].ok(condition, message);
     }
 
     function is(v1, v2, message) {
-      return opener.wrappedJSObject.is(v1, v2, message);
+      return window.arguments[0].is(v1, v2, message);
     }
 
     function todo_is(v1, v2, message) {
-      return opener.wrappedJSObject.todo_is(v1, v2, message);
+      return window.arguments[0].todo_is(v1, v2, message);
     }
 
     // Make sure that an error in this file actually causes the test to fail.
@@ -411,7 +411,7 @@
         }
         failed = true;
       }
-      opener.wrappedJSObject.SpecialPowers.clearUserPref(PREF_UNSAFE_FORBIDDEN);
+      window.arguments[0].SpecialPowers.clearUserPref(PREF_UNSAFE_FORBIDDEN);
       ok(failed, "CPOW should fail when unsafe");
       msg.target.messageManager.sendAsyncMessage("cpows:unsafe_done");
     }
@@ -427,7 +427,7 @@
         }
         ok(false, "cpow failed");
       }
-      opener.wrappedJSObject.SpecialPowers.clearUserPref(PREF_UNSAFE_FORBIDDEN);
+      window.arguments[0].SpecialPowers.clearUserPref(PREF_UNSAFE_FORBIDDEN);
       msg.target.messageManager.sendAsyncMessage("cpows:safe_done");
     }
 
@@ -512,7 +512,7 @@
 
     function finish() {
       ok(gReceivedErrorProbe, "Should have reported error probe");
-      opener.setTimeout(function() { this.done(); }, 0);
+      window.arguments[0].setTimeout(function() { this.done(); }, 0);
       window.close();
     }
   ]]></script>

dom/base/test/chrome/file_bug1139964.xul

@@ -14,7 +14,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1139964
   var ppm = Cc["@mozilla.org/parentprocessmessagemanager;1"].getService();
 
   function ok(cond, msg) {
-    opener.wrappedJSObject.ok(cond, msg);
+    window.arguments[0].ok(cond, msg);
   }
 
   var msgName = "TEST:Global_has_Promise";
@@ -44,7 +44,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1139964
     ok(m.data.hasTextEncoder, "BrowserChildGlobal should have TextEncoder object in the global scope!");
     ok(m.data.hasWindow, "BrowserChildGlobal should have Window object in the global scope!");
 
-    opener.setTimeout(function() { this.done(); }, 0);
+    window.arguments[0].setTimeout(function() { this.done(); }, 0);
     window.close();
   }
 

dom/base/test/chrome/file_bug1209621.xul

@@ -12,11 +12,11 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1209621
   <!-- test code goes here -->
   <script type="application/javascript"><![CDATA[
   function ok(cond, msg) {
-    opener.wrappedJSObject.ok(cond, msg);
+    window.arguments[0].ok(cond, msg);
   }
 
   function is(actual, expected, msg) {
-    opener.wrappedJSObject.is(actual, expected, msg);
+    window.arguments[0].is(actual, expected, msg);
   }
 
   function run() {
@@ -64,7 +64,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1209621
     is(treeOwner.primaryContentShell, null,
        "There shouldn't be primaryContentShell because no browser has primary=true.");
 
-    opener.setTimeout(function() { this.done(); }, 0);
+    window.arguments[0].setTimeout(function() { this.done(); }, 0);
     window.close();
   }
 

dom/base/test/chrome/file_bug549682.xul

@@ -19,11 +19,11 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=549682
   var cpm = Cc["@mozilla.org/childprocessmessagemanager;1"].getService();
 
   function ok(cond, msg) {
-    opener.wrappedJSObject.ok(cond, msg);
+    window.arguments[0].ok(cond, msg);
   }
 
   function is(actual, expected, msg) {
-    opener.wrappedJSObject.is(actual, expected, msg);
+    window.arguments[0].is(actual, expected, msg);
   }
 
   var asyncPPML = false;
@@ -119,7 +119,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=549682
   }
 
   function finish() {
-    opener.setTimeout(function() { this.done(); }, 0);
+    window.arguments[0].setTimeout(function() { this.done(); }, 0);
     var i = document.getElementById("ifr");
     i.remove(); // This is a crash test!
     window.close();

dom/base/test/chrome/file_bug616841.xul

@@ -38,7 +38,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=616841
     function recvCmp(m) {
       var i = m.json.i, cmp = m.json.cmp;
       var pair = toCompare[i];
-      opener.wrappedJSObject.is(pair[0].localeCompare(pair[1]), cmp, "localeCompare returned same result in frame script");
+      window.arguments[0].is(pair[0].localeCompare(pair[1]), cmp, "localeCompare returned same result in frame script");
 
       if (toCompare.length == ++nCmps) {
          messageManager.removeMessageListener("cmp", recvCmp);
@@ -53,7 +53,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=616841
     }
 
     function finish() {
-      opener.setTimeout(function() { this.done(); }, 0);
+      window.arguments[0].setTimeout(function() { this.done(); }, 0);
       window.close();
     }
 

dom/base/test/chrome/file_bug816340.xul

@@ -13,7 +13,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=816340
   <script type="application/javascript"><![CDATA[
 
     function ok(val, msg) {
-      opener.wrappedJSObject.ok(val, msg);
+      window.arguments[0].ok(val, msg);
     }
 
     var elems = 
@@ -60,7 +60,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=816340
         testElement(elems[i], true, false);
       }
       ok(true, "done");
-      opener.setTimeout(function() { this.done(); }, 0);
+      window.arguments[0].setTimeout(function() { this.done(); }, 0);
       window.close();
     }
 

dom/base/test/chrome/file_bug990812-1.xul

@@ -19,7 +19,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=990812
     var globalMM = Cc["@mozilla.org/globalmessagemanager;1"].getService();
 
     function is(val, exp, msg) {
-      opener.wrappedJSObject.is(val, exp, msg);
+      window.arguments[0].is(val, exp, msg);
     }
 
     /**
@@ -37,10 +37,10 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=990812
 
       messageManager.addMessageListener("test", function onMessage(msg) {
         var next = order.shift();
-        opener.wrappedJSObject.is(msg.data, next, "received test:" + next);
+        window.arguments[0].is(msg.data, next, "received test:" + next);
 
         if (order.length == 0) {
-          opener.setTimeout(function() { this.next(); });
+          window.arguments[0].setTimeout(function() { this.next(); });
           window.close();
         }
       });

dom/base/test/chrome/file_bug990812-2.xul

@@ -18,7 +18,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=990812
     var globalMM = Cc["@mozilla.org/globalmessagemanager;1"].getService();
 
     function is(val, exp, msg) {
-      opener.wrappedJSObject.is(val, exp, msg);
+      window.arguments[0].is(val, exp, msg);
     }
 
     function promiseMessage(type, mm) {
@@ -44,7 +44,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=990812
       browser.messageManager.loadFrameScript(FRAME_SCRIPT, true);
 
       Promise.all([global, window, group]).then(function () {
-        opener.setTimeout(function() { this.next(); });
+        self.arguments[0].setTimeout(function() { this.next(); });
         self.close();
       });
     }

dom/base/test/chrome/file_bug990812-3.xul

@@ -18,7 +18,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=990812
     var globalMM = Cc["@mozilla.org/globalmessagemanager;1"].getService();
 
     function is(val, exp, msg) {
-      opener.wrappedJSObject.is(val, exp, msg);
+      window.arguments[0].is(val, exp, msg);
     }
 
     function promiseMessage(type, mm) {
@@ -55,7 +55,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=990812
       globalMM.broadcastAsyncMessage("test", "global");
 
       Promise.all([promise1, promise2]).then(function () {
-        opener.setTimeout(function() { this.next(); });
+        window.arguments[0].setTimeout(function() { this.next(); });
         window.close();
       });
     }

dom/base/test/chrome/file_bug990812-4.xul

@@ -20,7 +20,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=990812
     var globalMM = Cc["@mozilla.org/globalmessagemanager;1"].getService();
 
     function is(val, exp, msg) {
-      opener.wrappedJSObject.is(val, exp, msg);
+      window.arguments[0].is(val, exp, msg);
     }
 
     function promiseMessage(type, mm) {
@@ -50,7 +50,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=990812
       messageManager.broadcastAsyncMessage("test");
 
       Promise.all([promise1, promise2]).then(function () {
-        opener.setTimeout(function() { this.next(); });
+        window.arguments[0].setTimeout(function() { this.next(); });
         window.close();
       });
     }

dom/base/test/chrome/file_bug990812-5.xul

@@ -20,7 +20,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=990812
     var globalMM = Cc["@mozilla.org/globalmessagemanager;1"].getService();
 
     function is(val, exp, msg) {
-      opener.wrappedJSObject.is(val, exp, msg);
+      window.arguments[0].is(val, exp, msg);
     }
 
     function promiseTwoMessages(type, mm) {
@@ -58,7 +58,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=990812
       messageManager.broadcastAsyncMessage("test");
 
       Promise.all([promise1, promise2]).then(function () {
-        opener.setTimeout(function() { this.next(); });
+        window.arguments[0].setTimeout(function() { this.next(); });
         window.close();
       });
     }

dom/base/test/chrome/test_bug1139964.xul

@@ -26,7 +26,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1139964
   }
 
   addLoadEvent(function() {
-    window.open("file_bug1139964.xul", "", "chrome");
+    window.openDialog("file_bug1139964.xul", "", "chrome,noopener", window);
   });
   ]]></script>
 </window>

dom/base/test/chrome/test_bug1209621.xul

@@ -26,7 +26,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1209621
   }
 
   addLoadEvent(function() {
-    window.open("file_bug1209621.xul", "", "chrome");
+    window.openDialog("file_bug1209621.xul", "", "chrome,noopener", window);
   });
 
   ]]>

dom/base/test/chrome/test_bug549682.xul

@@ -26,7 +26,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=549682
   }
 
   addLoadEvent(function() {
-    window.open("file_bug549682.xul", "", "chrome");
+    window.openDialog("file_bug549682.xul", "", "chrome,noopener", window);
   });
   ]]></script>
 </window>

dom/base/test/chrome/test_bug616841.xul

@@ -24,7 +24,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=616841
   }
 
   addLoadEvent(function() {
-    window.open("file_bug616841.xul", "", "chrome");
+    window.openDialog("file_bug616841.xul", "", "chrome,noopener", window);
   });
   ]]></script>
 </window>

dom/base/test/chrome/test_bug814638.xul

@@ -23,8 +23,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=814638
 
   function startTest() {
     let hostURL = "chrome://mochitests/content/chrome/dom/base/test/chrome/host_bug814638.xul";
-    let host1 = window.open(hostURL, "_blank", "chrome");
+    let host1 = docShell.rootTreeItem.domWindow.open(hostURL, "_blank", "chrome");
-    let host2 = window.open(hostURL, "_blank", "chrome");
+    let host2 = docShell.rootTreeItem.domWindow.open(hostURL, "_blank", "chrome");
 
     let isHost1Loaded = isHost2Loaded = false
     host1.onload = function() {

dom/base/test/chrome/test_bug816340.xul

@@ -24,7 +24,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=816340
   }
 
   addLoadEvent(function() {
-    window.open("file_bug816340.xul", "", "chrome");
+    window.openDialog("file_bug816340.xul", "", "chrome,noopener", window);
   });
   ]]></script>
 </window>

dom/base/test/chrome/test_bug990812.xul

@@ -31,7 +31,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=990812
     if (tests.length > 0) {
       var file = tests.shift();
       info("-- running " + file);
-      window.open(file, "", "chrome");
+      window.openDialog(file, "_blank", "chrome,noopener", window);
     } else {
       SimpleTest.finish();
     }

dom/base/test/chrome/test_chromeOuterWindowID.xul

@@ -72,7 +72,7 @@ windows.
    *        nonRemote<num>: a reference to the non-remote browser in the window
    */
   async function prepareWindow(num, page) {
-    let win = window.open(BROWSER_DOC, "bug1474662-" + num, "chrome,width=200,height=200");
+    let win = docShell.rootTreeItem.domWindow.open(BROWSER_DOC, "bug1474662-" + num, "chrome,width=200,height=200");
     await BrowserTestUtils.waitForEvent(win, "load");
     let remote = win.document.getElementById("remote");
     let nonRemote = win.document.getElementById("non-remote");

dom/base/test/chrome/test_cpows.xul

@@ -28,7 +28,7 @@
   }
 
   addLoadEvent(function() {
-    window.open("cpows_parent.xul", "", "chrome");
+    window.openDialog("cpows_parent.xul", "", "chrome,noopener", window);
   });
   ]]></script>
 </window>

dom/base/test/chrome/test_document-element-inserted.xul

@@ -37,7 +37,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1411707
     // expect both events to fire with the docs in the correct state.
     async function testEvents() {
       info(`Waiting for events after loading ${OUTER_URL}`);
-      let win = window.openDialog(OUTER_URL, null, "chrome,dialog=no,all");
+      let win = docShell.rootTreeItem.domWindow.openDialog(OUTER_URL, "_blank", "chrome,dialog=no,all");
       await waitForEvent(OUTER_URL);
       await waitForEvent(INNER_URL);
       win.close();

dom/base/test/chrome/test_nsITextInputProcessor.xul

@@ -21,8 +21,8 @@
 <![CDATA[
 
 SimpleTest.waitForExplicitFinish();
-window.open("window_nsITextInputProcessor.xul", "_blank", 
+window.openDialog("window_nsITextInputProcessor.xul", "_blank", 
-            "chrome,width=600,height=600");
+                  "chrome,width=600,height=600,noopener", window);
 
 ]]>
 </script>

dom/base/test/chrome/test_swapFrameLoaders.xul

@@ -19,7 +19,7 @@ Test swapFrameLoaders with different frame types and remoteness
   <script type="application/javascript"><![CDATA[
   SimpleTest.waitForExplicitFinish();
 
-  window.open("window_swapFrameLoaders.xul", "bug1242644",
+  window.openDialog("window_swapFrameLoaders.xul", "bug1242644",
-              "chrome,width=600,height=600");
+                    "chrome,width=600,height=600,noopener", window);
   ]]></script>
 </window>

dom/base/test/chrome/test_title.xul

@@ -22,8 +22,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=481777
   /** Test for Bug 481777 **/
 
     SimpleTest.waitForExplicitFinish();
-    window.open("title_window.xul", "bug481777",
+    window.openDialog("title_window.xul", "bug481777",
-                "chrome,width=100,height=100");
+                      "chrome,width=100,height=100,noopener", window);
   ]]>
   </script>
 </window>

dom/base/test/chrome/title_window.xul

@@ -22,7 +22,7 @@
     <![CDATA[
     var imports = [ "SimpleTest", "is", "isnot", "ok" ];
     for (var name of imports) {
-      window[name] = window.opener.wrappedJSObject[name];
+      window[name] = window.arguments[0][name];
     }
 
     function testStatics() {

dom/base/test/chrome/window_nsITextInputProcessor.xul

@@ -25,7 +25,7 @@
 
 const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
 
-var SimpleTest = window.opener.wrappedJSObject.SimpleTest;
+var SimpleTest = window.arguments[0].SimpleTest;
 
 SimpleTest.waitForFocus(runTests, window);
 
@@ -78,7 +78,7 @@ var iframe = document.getElementById("iframe");
 var childWindow = iframe.contentWindow;
 var textareaInFrame;
 var input = document.getElementById("input");
-var otherWindow = window.opener;
+var otherWindow = window.arguments[0];
 var otherDocument = otherWindow.document;
 var inputInChildWindow = otherDocument.getElementById("input");
 

dom/base/test/chrome/window_swapFrameLoaders.xul

@@ -10,7 +10,7 @@ Test swapFrameLoaders with different frame types and remoteness
 
   <script type="application/javascript"><![CDATA[
   ["SimpleTest", "SpecialPowers", "info", "is", "ok", "add_task"].forEach(key => {
-    window[key] = window.opener[key];
+    window[key] = window.arguments[0][key];
   })
 
   const NS = {

dom/base/test/test_bug1016960.html

@@ -12,8 +12,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1016960
 
   /** Test for Bug 1016960 **/
 
-  var chromeWindow = window.open("chrome://mochitests/content/chrome/dom/base/test/file_empty.html", "1016960", "chrome");
+  var chromeWindow = docShell.rootTreeItem.domWindow.open("chrome://mochitests/content/chrome/dom/base/test/file_empty.html", "1016960", "chrome");
-  ok(chromeWindow.isChromeWindow, "A chrome window should return true for |instanceof ChromeWindow|.");
+  ok(chromeWindow.isChromeWindow, "A chrome window should return true for .isChromeWindow.");
   chromeWindow.close();
 
   </script>

dom/canvas/test/chrome/test_drawWindow_widget_layers.html

@@ -29,8 +29,8 @@
 
     // Need to open as a toplevel chrome window so that
     // DRAWWINDOW_USE_WIDGET_LAYERS is honored.
-    sourceWindow = window.open("file_drawWindow_source.html", "",
+    sourceWindow = docShell.rootTreeItem.domWindow.open("file_drawWindow_source.html", "",
-                               `chrome,width=${WINDOW_INNER_WIDTH},height=${WINDOW_INNER_HEIGHT}`);
+                                                        `chrome,width=${WINDOW_INNER_WIDTH},height=${WINDOW_INNER_HEIGHT}`);
     SimpleTest.waitForFocus(runTests, sourceWindow);
   }
 

dom/events/test/test_bug1412775.xul

@@ -18,7 +18,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1412775
   var win;
   function init() {
     SimpleTest.waitForExplicitFinish();
-    win = window.open("window_bug1412775.xul", "_new", "chrome");
+    win = docShell.rootTreeItem.domWindow.open("window_bug1412775.xul", "_new", "chrome");
     win.onload = function() {
       var b = win.document.getElementById("browser");
       var d = b.contentWindow.document;

dom/events/test/test_bug617528.xul

@@ -21,7 +21,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=617528
     var browser;
 
     function start() {
-      _window = window.open("window_bug617528.xul", "_new", "chrome");
+      _window = docShell.rootTreeItem.domWindow.open("window_bug617528.xul", "_new", "chrome");
       _window.addEventListener("load", onLoad, false);
     }
 

dom/ipc/tests/process_error.xul

@@ -9,10 +9,10 @@
     const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
     const {BrowserTestUtils} = ChromeUtils.import("resource://testing-common/BrowserTestUtils.jsm");
 
-    const ok = window.opener.wrappedJSObject.ok;
+    const ok = window.arguments[0].ok;
-    const is = window.opener.wrappedJSObject.is;
+    const is = window.arguments[0].is;
-    const done = window.opener.wrappedJSObject.done;
+    const done = window.arguments[0].done;
-    const SimpleTest = window.opener.wrappedJSObject.SimpleTest;
+    const SimpleTest = window.arguments[0].SimpleTest;
 
     // Allow the browser to get connected before using the messageManager to cause
     // a crash:

dom/ipc/tests/test_process_error.xul

@@ -9,7 +9,7 @@
   SimpleTest.waitForExplicitFinish();
   SimpleTest.expectChildProcessCrash();
 
-  var w = window.open('process_error.xul', '_blank', 'chrome,resizable=yes,width=400,height=600');
+  var w = docShell.rootTreeItem.domWindow.openDialog('process_error.xul', '_blank', 'chrome,resizable=yes,width=400,height=600', window);
 
   function done()
   {

dom/messagechannel/tests/mm_messageChannelParent.js

@@ -2,23 +2,23 @@ let port;
 let mm;
 
 function info(message) {
-  return opener.wrappedJSObject.info(message);
+  return window.arguments[0].info(message);
 }
 
 function ok(condition, message) {
-  return opener.wrappedJSObject.ok(condition, message);
+  return window.arguments[0].ok(condition, message);
 }
 
 function is(v1, v2, message) {
-  return opener.wrappedJSObject.is(v1, v2, message);
+  return window.arguments[0].is(v1, v2, message);
 }
 
 function todo_is(v1, v2, message) {
-  return opener.wrappedJSObject.todo_is(v1, v2, message);
+  return window.arguments[0].todo_is(v1, v2, message);
 }
 
 function cleanUp() {
-  opener.setTimeout(function() {
+  window.arguments[0].setTimeout(function() {
     this.done();
   }, 0);
   window.close();

dom/messagechannel/tests/test_messageChannelWithMessageManager.xul

@@ -21,7 +21,7 @@
   }
 
   addLoadEvent(function() {
-    window.open("mm_messageChannelParent.xul", "", "chrome");
+    window.openDialog("mm_messageChannelParent.xul", "", "chrome,noopener", window);
   });
   ]]></script>
 </window>

dom/messagechannel/tests/test_messageChannelWithMessageManagerNotRemote.xul

@@ -21,7 +21,7 @@
   }
 
   addLoadEvent(function() {
-    window.open("mm_messageChannelParentNotRemote.xul", "", "chrome");
+    window.openDialog("mm_messageChannelParentNotRemote.xul", "", "chrome,noopener", window);
   });
   ]]></script>
 </window>

dom/plugins/test/mochitest/test_xulbrowser_plugin_visibility.xul

@@ -10,7 +10,7 @@
   SimpleTest.waitForExplicitFinish();
   setTestPluginEnabledState(SpecialPowers.Ci.nsIPluginTag.STATE_ENABLED);
 
-  var w = window.open('xulbrowser_plugin_visibility.xul', '_blank', 'chrome,resizable=yes,width=400,height=600');
+  var w = docShell.rootTreeItem.domWindow.openDialog('xulbrowser_plugin_visibility.xul', '_blank', 'chrome,resizable=yes,width=400,height=600', window);
 
   function done()
   {

dom/plugins/test/mochitest/xulbrowser_plugin_visibility.xul

@@ -17,10 +17,10 @@
   <script type="application/javascript" src="plugin-utils.js"/>
   <script type="application/javascript"><![CDATA[
     const {BrowserTestUtils} = ChromeUtils.import("resource://testing-common/BrowserTestUtils.jsm");
-    const ok = window.opener.wrappedJSObject.ok;
+    const ok = window.arguments[0].ok;
-    const is = window.opener.wrappedJSObject.is;
+    const is = window.arguments[0].is;
-    const done = window.opener.wrappedJSObject.done;
+    const done = window.arguments[0].done;
-    const SimpleTest = window.opener.wrappedJSObject.SimpleTest;
+    const SimpleTest = window.arguments[0].SimpleTest;
 
     const nsIWebProgress = Ci.nsIWebProgress;
     const nsIWebProgressListener = Ci.nsIWebProgressListener;

dom/tests/browser/browser_test_toolbars_visibility.js

@@ -228,7 +228,7 @@ add_task(async function() {
   let defaultWindowPromise = BrowserTestUtils.waitForNewWindow({
     url: TARGET_PAGE,
   });
-  window.open(TARGET_PAGE, "_blank");
+  window.open(TARGET_PAGE, "_blank", "noopener");
   let defaultWindow = await defaultWindowPromise;
 
   // Check that all toolbars are visible
@@ -237,7 +237,7 @@ add_task(async function() {
 
   // Now lets open a window with toolbars hidden from this chrome context
   let features =
-    "location=no, personalbar=no, toolbar=no, scrollbars=no, menubar=no, status=no";
+    "location=no, personalbar=no, toolbar=no, scrollbars=no, menubar=no, status=no, noopener";
   let popupWindowPromise = BrowserTestUtils.waitForNewWindow({
     url: TARGET_PAGE,
   });

dom/tests/mochitest/chrome/DOMWindowCreated_chrome.xul

@@ -12,7 +12,7 @@
           src="chrome://mochikit/content/chrome-harness.js"></script>
 
 <script type="application/javascript">
-var SimpleTest = window.opener.wrappedJSObject.SimpleTest;
+var SimpleTest = window.arguments[0].SimpleTest;
 
 document.addEventListener("DOMWindowCreated", function(e) {
   var otherWindow = e.target.defaultView.wrappedJSObject;

dom/tests/mochitest/chrome/MozDomFullscreen_chrome.xul

@@ -26,11 +26,11 @@
 <script type="application/javascript"><![CDATA[
 
 function ok(condition, msg) {
-  window.opener.wrappedJSObject.ok(condition, msg);
+  window.arguments[0].ok(condition, msg);
 }
 
 function is(a, b, msg) {
-  window.opener.wrappedJSObject.is(a, b, msg);
+  window.arguments[0].is(a, b, msg);
 }
 
 var gBrowser = null;
@@ -88,7 +88,7 @@ function earlyExit(event) {
 function lastExit(event) {
   is(event.target, gOuterDoc, "MozDOMFullscreen:Exited should be targeted at the last exited doc");
   ok(gOuterDoc.fullscreenElement == null, "Fullscreen should have been fully exited");
-  window.opener.wrappedJSObject.done();
+  window.arguments[0].done();
 }
 
 function start() {

dom/tests/mochitest/chrome/file_DOM_element_instanceof.xul

@@ -8,8 +8,8 @@
   <script type="application/javascript">
   <![CDATA[
   /** Test for Bug 799299 **/
-  var SimpleTest = opener.wrappedJSObject.SimpleTest;
+  var SimpleTest = window.arguments[0].SimpleTest;
-  var ok = opener.wrappedJSObject.ok;
+  var ok = window.arguments[0].ok;
 
   // Note: We can't use frames[0] here because the type="content" attribute
   // isolates it into a separate browsing context hierarchy.
@@ -26,7 +26,7 @@
      "Should be instance of HTMLLabelElement");
 
   window.close();
-  opener.wrappedJSObject.SimpleTest.finish();
+  window.arguments[0].SimpleTest.finish();
   ]]>
   </script>
 </window>

dom/tests/mochitest/chrome/file_bug1224790-1_modal.xul

@@ -24,7 +24,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1224790
 
   function nonModalClosed() {
     window.close();
-    opener.wrappedJSObject.modalClosed();
+    window.arguments[0].modalClosed();
   }
 
   SimpleTest.waitForFocus(runTests);

dom/tests/mochitest/chrome/file_bug1224790-2_modal.xul

@@ -26,7 +26,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1224790
 
   function nonModalOpened() {
     window.close();
-    nonModal.wrappedJSObject.modalClosed(opener);
+    nonModal.modalClosed(window.arguments[0]);
   }
 
   SimpleTest.waitForFocus(runTests);

dom/tests/mochitest/chrome/file_bug799299.xul

@@ -30,29 +30,29 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=799299
     var b1 = document.getElementById("b1");
     var b2 = document.getElementById("b2");
     b1.contentWindow.focus();
-    opener.wrappedJSObject.is(document.activeElement, b1,
+    window.arguments[0].is(document.activeElement, b1,
-                              "Focused first iframe");
+                           "Focused first iframe");
 
     var didCallDummy = false;
     b2.contentWindow.addEventListener("mousedown", function(e) { didCallDummy = true; });
     sendClick(b2.contentWindow);
-    opener.wrappedJSObject.ok(didCallDummy, "dummy mousedown handler should fire");
+    window.arguments[0].ok(didCallDummy, "dummy mousedown handler should fire");
-    opener.wrappedJSObject.is(document.activeElement, b2,
+    window.arguments[0].is(document.activeElement, b2,
-                              "Focus shifted to second iframe");
+                           "Focus shifted to second iframe");
 
     b1.contentWindow.focus();
-    opener.wrappedJSObject.is(document.activeElement, b1,
+    window.arguments[0].is(document.activeElement, b1,
-                              "Re-focused first iframe for the first time");
+                           "Re-focused first iframe for the first time");
 
     var didCallListener = false;
     b2.contentWindow.addEventListener("mousedown", function(e) { didCallListener = true; e.preventDefault(); });
     sendClick(b2.contentWindow);
-    opener.wrappedJSObject.ok(didCallListener, "mousedown handler should fire");
+    window.arguments[0].ok(didCallListener, "mousedown handler should fire");
-    opener.wrappedJSObject.is(document.activeElement, b2,
+    window.arguments[0].is(document.activeElement, b2,
-                              "focus should move to the second iframe");
+                           "focus should move to the second iframe");
 
     window.close();
-    opener.wrappedJSObject.SimpleTest.finish();
+    window.arguments[0].SimpleTest.finish();
   }
 
   SimpleTest.waitForFocus(runTests);

dom/tests/mochitest/chrome/file_bug800817.xul

@@ -30,41 +30,41 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=800817
     var b1 = document.getElementById("b1");
     var b2 = document.getElementById("b2");
 
-    var testMozBrowser = opener.wrappedJSObject.testMozBrowser;
+    var testMozBrowser = window.arguments[0].testMozBrowser;
     if (testMozBrowser) {
       b1.setAttribute("mozbrowser", "true");
       b2.setAttribute("mozbrowser", "true");
     }
 
     if (testMozBrowser)
-      opener.wrappedJSObject.info("Testing with mozbrowser=true");
+      window.arguments[0].info("Testing with mozbrowser=true");
     else
-      opener.wrappedJSObject.info("Testing without mozbrowser");
+      window.arguments[0].info("Testing without mozbrowser");
 
     b1.contentWindow.focus();
-    opener.wrappedJSObject.is(document.activeElement, b1,
+    window.arguments[0].is(document.activeElement, b1,
-                              "Focused first iframe");
+                           "Focused first iframe");
 
     var didCallDummy = false;
     b2.contentWindow.addEventListener("mousedown", function(e) { didCallDummy = true; });
     sendClick(b2.contentWindow);
-    opener.wrappedJSObject.ok(didCallDummy, "dummy mousedown handler should fire");
+    window.arguments[0].ok(didCallDummy, "dummy mousedown handler should fire");
-    opener.wrappedJSObject.is(document.activeElement, b2,
+    window.arguments[0].is(document.activeElement, b2,
-                              "Focus shifted to second iframe");
+                           "Focus shifted to second iframe");
 
     b1.contentWindow.focus();
-    opener.wrappedJSObject.is(document.activeElement, b1,
+    window.arguments[0].is(document.activeElement, b1,
-                              "Re-focused first iframe for the first time");
+                           "Re-focused first iframe for the first time");
 
     var didCallListener = false;
     b2.contentWindow.addEventListener("mousedown", function(e) { didCallListener = true; e.preventDefault(); });
     sendClick(b2.contentWindow);
-    opener.wrappedJSObject.ok(didCallListener, "mousedown handler should fire");
+    window.arguments[0].ok(didCallListener, "mousedown handler should fire");
-    opener.wrappedJSObject.is(document.activeElement, b1,
+    window.arguments[0].is(document.activeElement, b1,
-                              "Did not move focus to the second iframe");
+                           "Did not move focus to the second iframe");
 
     window.close();
-    opener.wrappedJSObject.finishedTests();
+    window.arguments[0].finishedTests();
   }
 
   SimpleTest.waitForFocus(runTests);

dom/tests/mochitest/chrome/file_bug830858.xul

@@ -34,27 +34,27 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=830858
     b.addEventListener("foo", function() { ++iframeListenerCalled; }, true);
 
     doc.dispatchEvent(new Event("foo"));
-    opener.wrappedJSObject.is(docListenerCalled, 1, "Normal dispatch to Document");
+    window.arguments[0].is(docListenerCalled, 1, "Normal dispatch to Document");
-    opener.wrappedJSObject.is(winListenerCalled, 1, "Normal dispatch to Document");
+    window.arguments[0].is(winListenerCalled, 1, "Normal dispatch to Document");
-    opener.wrappedJSObject.is(iframeListenerCalled, 1, "Normal dispatch to Document");
+    window.arguments[0].is(iframeListenerCalled, 1, "Normal dispatch to Document");
 
     win.dispatchEvent(new Event("foo"));
-    opener.wrappedJSObject.is(docListenerCalled, 1, "Normal dispatch to Window");
+    window.arguments[0].is(docListenerCalled, 1, "Normal dispatch to Window");
-    opener.wrappedJSObject.is(winListenerCalled, 2, "Normal dispatch to Window");
+    window.arguments[0].is(winListenerCalled, 2, "Normal dispatch to Window");
-    opener.wrappedJSObject.is(iframeListenerCalled, 2, "Normal dispatch to Window");
+    window.arguments[0].is(iframeListenerCalled, 2, "Normal dispatch to Window");
 
     wu.dispatchEventToChromeOnly(doc, new Event("foo"));
-    opener.wrappedJSObject.is(docListenerCalled, 1, "Chrome-only dispatch to Document");
+    window.arguments[0].is(docListenerCalled, 1, "Chrome-only dispatch to Document");
-    opener.wrappedJSObject.is(winListenerCalled, 2, "Chrome-only dispatch to Document");
+    window.arguments[0].is(winListenerCalled, 2, "Chrome-only dispatch to Document");
-    opener.wrappedJSObject.is(iframeListenerCalled, 3, "Chrome-only dispatch to Document");
+    window.arguments[0].is(iframeListenerCalled, 3, "Chrome-only dispatch to Document");
 
     wu.dispatchEventToChromeOnly(win, new Event("foo"));
-    opener.wrappedJSObject.is(docListenerCalled, 1, "Chrome-only dispatch to Window");
+    window.arguments[0].is(docListenerCalled, 1, "Chrome-only dispatch to Window");
-    opener.wrappedJSObject.is(winListenerCalled, 2, "Chrome-only dispatch to Window");
+    window.arguments[0].is(winListenerCalled, 2, "Chrome-only dispatch to Window");
-    opener.wrappedJSObject.is(iframeListenerCalled, 4, "Chrome-only dispatch to Window");
+    window.arguments[0].is(iframeListenerCalled, 4, "Chrome-only dispatch to Window");
 
     window.close();
-    opener.wrappedJSObject.finishedTests();
+    window.arguments[0].finishedTests();
   }
 
   SimpleTest.waitForFocus(runTests);

dom/tests/mochitest/chrome/file_clipboard_events_chrome.html

@@ -1 +1 @@
-<body onload='window.opener.doChecks(this)'><input id='i' value='Sample Text'></body>
+<body onload='window.arguments[0].doChecks(this)'><input id='i' value='Sample Text'></body>

dom/tests/mochitest/chrome/fullscreen.xul

@@ -13,7 +13,7 @@ window.addEventListener("fullscreen", onFullScreen, true);
 
 function onFullScreen(event)
 {
-  window.opener.wrappedJSObject.done(window.fullScreen);
+  window.arguments[0].done(window.fullScreen);
 }
 
 </script>

dom/tests/mochitest/chrome/sizemode_attribute.xul

@@ -46,7 +46,7 @@ let tests = [
   },
 
   function test8() {
-    window.opener.wrappedJSObject.done();
+    window.arguments[0].done();
   }
 ];
 
@@ -77,7 +77,7 @@ function checkAndContinue(sizemode) {
   }, 0);
 }
 
-let is = window.opener.wrappedJSObject.is;
+let is = window.arguments[0].is;
 
 </script>