mozilla-central: changeset 282426:e22b3043887ed36bf2c634c2924a7c8d39d226b1

--- a/accessible/base/DocManager.cpp
+++ b/accessible/base/DocManager.cpp
@@ -21,17 +21,16 @@
 #endif
 
 #include "mozilla/EventListenerManager.h"
 #include "mozilla/dom/Event.h" // for nsIDOMEvent::InternalDOMEvent()
 #include "nsCURILoader.h"
 #include "nsDocShellLoadTypes.h"
 #include "nsIChannel.h"
 #include "nsIDOMDocument.h"
-#include "nsIDOMWindow.h"
 #include "nsIInterfaceRequestorUtils.h"
 #include "nsIWebNavigation.h"
 #include "nsServiceManagerUtils.h"
 #include "nsIWebProgress.h"
 #include "nsCoreUtils.h"
 #include "nsXULAppAPI.h"
 #include "mozilla/dom/TabChild.h"
 
@@ -213,21 +212,21 @@ DocManager::OnStateChange(nsIWebProgress
                           nsresult aStatus)
 {
   NS_ASSERTION(aStateFlags & STATE_IS_DOCUMENT, "Other notifications excluded");
 
   if (nsAccessibilityService::IsShutdown() || !aWebProgress ||
       (aStateFlags & (STATE_START | STATE_STOP)) == 0)
     return NS_OK;
 
-  nsCOMPtr<nsIDOMWindow> DOMWindow;
+  nsCOMPtr<mozIDOMWindowProxy> DOMWindow;
   aWebProgress->GetDOMWindow(getter_AddRefs(DOMWindow));
   NS_ENSURE_STATE(DOMWindow);
 
-  nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(DOMWindow);
+  nsPIDOMWindowOuter* piWindow = nsPIDOMWindowOuter::From(DOMWindow);
   MOZ_ASSERT(piWindow);
 
   nsCOMPtr<nsIDocument> document = piWindow->GetDoc();
   NS_ENSURE_STATE(document);
 
   // Document was loaded.
   if (aStateFlags & STATE_STOP) {
 #ifdef A11Y_LOG
@@ -398,17 +397,17 @@ DocManager::HandleDOMDocumentLoad(nsIDoc
 
   docAcc->NotifyOfLoad(aLoadEventType);
 }
 
 void
 DocManager::AddListeners(nsIDocument* aDocument,
                          bool aAddDOMContentLoadedListener)
 {
-  nsPIDOMWindow* window = aDocument->GetWindow();
+  nsPIDOMWindowOuter* window = aDocument->GetWindow();
   EventTarget* target = window->GetChromeEventHandler();
   EventListenerManager* elm = target->GetOrCreateListenerManager();
   elm->AddEventListenerByType(this, NS_LITERAL_STRING("pagehide"),
                               TrustedEventsAtCapture());
 
 #ifdef A11Y_LOG
   if (logging::IsEnabled(logging::eDocCreate))
     logging::Text("added 'pagehide' listener");
@@ -422,17 +421,17 @@ DocManager::AddListeners(nsIDocument* aD
       logging::Text("added 'DOMContentLoaded' listener");
 #endif
   }
 }
 
 void
 DocManager::RemoveListeners(nsIDocument* aDocument)
 {
-  nsPIDOMWindow* window = aDocument->GetWindow();
+  nsPIDOMWindowOuter* window = aDocument->GetWindow();
   if (!window)
     return;
 
   EventTarget* target = window->GetChromeEventHandler();
   if (!target)
     return;
 
   EventListenerManager* elm = target->GetOrCreateListenerManager();

--- a/accessible/base/FocusManager.cpp
+++ b/accessible/base/FocusManager.cpp
@@ -384,17 +384,17 @@ FocusManager::FocusedDOMNode() const
   if (focusedElm) {
     if (EventStateManager::IsRemoteTarget(focusedElm)) {
       return nullptr;
     }
     return focusedElm;
   }
 
   // Otherwise the focus can be on DOM document.
-  nsPIDOMWindow* focusedWnd = DOMFocusManager->GetFocusedWindow();
+  nsPIDOMWindowOuter* focusedWnd = DOMFocusManager->GetFocusedWindow();
   return focusedWnd ? focusedWnd->GetExtantDoc() : nullptr;
 }
 
 nsIDocument*
 FocusManager::FocusedDOMDocument() const
 {
   nsINode* focusedNode = FocusedDOMNode();
   return focusedNode ? focusedNode->OwnerDoc() : nullptr;

--- a/accessible/base/Logging.cpp
+++ b/accessible/base/Logging.cpp
@@ -387,19 +387,19 @@ static const char* sDocEventTitle = "DOC
 static const char* sFocusTitle = "FOCUS";
 
 void
 logging::DocLoad(const char* aMsg, nsIWebProgress* aWebProgress,
                  nsIRequest* aRequest, uint32_t aStateFlags)
 {
   MsgBegin(sDocLoadTitle, aMsg);
 
-  nsCOMPtr<nsIDOMWindow> DOMWindow;
+  nsCOMPtr<mozIDOMWindowProxy> DOMWindow;
   aWebProgress->GetDOMWindow(getter_AddRefs(DOMWindow));
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(DOMWindow);
+  nsPIDOMWindowOuter* window = nsPIDOMWindowOuter::From(DOMWindow);
   if (!window) {
     MsgEnd();
     return;
   }
 
   nsCOMPtr<nsIDocument> documentNode = window->GetDoc();
   if (!documentNode) {
     MsgEnd();

--- a/accessible/generic/ApplicationAccessible.cpp
+++ b/accessible/generic/ApplicationAccessible.cpp
@@ -10,17 +10,16 @@
 #include "nsAccessibilityService.h"
 #include "nsAccUtils.h"
 #include "Relation.h"
 #include "Role.h"
 #include "States.h"
 
 #include "nsIComponentManager.h"
 #include "nsIDOMDocument.h"
-#include "nsIDOMWindow.h"
 #include "nsIWindowMediator.h"
 #include "nsServiceManagerUtils.h"
 #include "mozilla/Services.h"
 #include "nsIStringBundle.h"
 
 using namespace mozilla::a11y;
 
 ApplicationAccessible::ApplicationAccessible() :
@@ -188,17 +187,17 @@ ApplicationAccessible::CacheChildren()
   if (NS_FAILED(rv))
     return;
 
   bool hasMore = false;
   windowEnumerator->HasMoreElements(&hasMore);
   while (hasMore) {
     nsCOMPtr<nsISupports> window;
     windowEnumerator->GetNext(getter_AddRefs(window));
-    nsCOMPtr<nsPIDOMWindow> DOMWindow = do_QueryInterface(window);
+    nsCOMPtr<nsPIDOMWindowOuter> DOMWindow = do_QueryInterface(window);
     if (DOMWindow) {
       nsCOMPtr<nsIDocument> docNode = DOMWindow->GetDoc();
       if (docNode) {
         GetAccService()->GetDocAccessible(docNode); // ensure creation
       }
     }
     windowEnumerator->HasMoreElements(&hasMore);
   }

--- a/accessible/generic/HyperTextAccessible.cpp
+++ b/accessible/generic/HyperTextAccessible.cpp
@@ -1355,17 +1355,17 @@ HyperTextAccessible::SetSelectionRange(i
   if (isFocusable)
     return NS_OK;
 
   nsFocusManager* DOMFocusManager = nsFocusManager::GetFocusManager();
   if (DOMFocusManager) {
     NS_ENSURE_TRUE(mDoc, NS_ERROR_FAILURE);
     nsIDocument* docNode = mDoc->DocumentNode();
     NS_ENSURE_TRUE(docNode, NS_ERROR_FAILURE);
-    nsCOMPtr<nsPIDOMWindow> window = docNode->GetWindow();
+    nsCOMPtr<nsPIDOMWindowOuter> window = docNode->GetWindow();
     nsCOMPtr<nsIDOMElement> result;
     DOMFocusManager->MoveFocus(window, nullptr, nsIFocusManager::MOVEFOCUS_CARET,
                                nsIFocusManager::FLAG_BYMOVEFOCUS, getter_AddRefs(result));
   }
 
   return NS_OK;
 }

--- a/accessible/generic/ImageAccessible.cpp
+++ b/accessible/generic/ImageAccessible.cpp
@@ -127,21 +127,21 @@ ImageAccessible::DoAction(uint8_t aIndex
   if (!uri)
     return false;
 
   nsAutoCString utf8spec;
   uri->GetSpec(utf8spec);
   NS_ConvertUTF8toUTF16 spec(utf8spec);
 
   nsIDocument* document = mContent->OwnerDoc();
-  nsCOMPtr<nsPIDOMWindow> piWindow = document->GetWindow();
+  nsCOMPtr<nsPIDOMWindowOuter> piWindow = document->GetWindow();
   if (!piWindow)
     return false;
 
-  nsCOMPtr<nsPIDOMWindow> tmp;
+  nsCOMPtr<nsPIDOMWindowOuter> tmp;
   return NS_SUCCEEDED(piWindow->Open(spec, EmptyString(), EmptyString(),
                                      getter_AddRefs(tmp)));
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // ImageAccessible
 
 nsIntPoint

--- a/accessible/generic/RootAccessible.cpp
+++ b/accessible/generic/RootAccessible.cpp
@@ -480,22 +480,20 @@ RootAccessible::Shutdown()
 }
 
 Relation
 RootAccessible::RelationByType(RelationType aType)
 {
   if (!mDocumentNode || aType != RelationType::EMBEDS)
     return DocAccessibleWrap::RelationByType(aType);
 
-  nsPIDOMWindow* rootWindow = mDocumentNode->GetWindow();
-  if (rootWindow) {
-    nsCOMPtr<nsIDOMWindow> contentWindow = nsGlobalWindow::Cast(rootWindow)->GetContent();
-    nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(contentWindow);
-    if (piWindow) {
-      nsCOMPtr<nsIDocument> contentDocumentNode = piWindow->GetDoc();
+  if (nsPIDOMWindowOuter* rootWindow = mDocumentNode->GetWindow()) {
+    nsCOMPtr<nsPIDOMWindowOuter> contentWindow = nsGlobalWindow::Cast(rootWindow)->GetContent();
+    if (contentWindow) {
+      nsCOMPtr<nsIDocument> contentDocumentNode = contentWindow->GetDoc();
       if (contentDocumentNode) {
         DocAccessible* contentDocument =
           GetAccService()->GetDocAccessible(contentDocumentNode);
         if (contentDocument)
           return Relation(contentDocument);
       }
     }
   }

--- a/accessible/interfaces/nsIAccessibleDocument.idl
+++ b/accessible/interfaces/nsIAccessibleDocument.idl
@@ -2,29 +2,29 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nsISupports.idl"
 
 interface nsIAccessiblePivot;
 interface nsIDOMDocument;
-interface nsIDOMWindow;
+interface mozIDOMWindowProxy;
 
 /**
  * An interface for in-process accessibility clients
  * that wish to retrieve information about a document.
  * When accessibility is turned on in Gecko,
  * there is an nsIAccessibleDocument for each document
  * whether it is XUL, HTML or whatever.
  * You can QueryInterface to nsIAccessibleDocument from the nsIAccessible for
  * the root node of a document or you can get one from
  * nsIAccessible::GetDocument().
  */
-[scriptable, uuid(2be938df-0210-4609-9ece-26b197a517e5)]
+[scriptable, uuid(5cad5f91-fcce-40e7-913e-4671701d19b4)]
 interface nsIAccessibleDocument : nsISupports
 {
   /**
    * The URL of the document
    */
   readonly attribute AString URL;
 
   /**
@@ -45,17 +45,17 @@ interface nsIAccessibleDocument : nsISup
   /**
    * The nsIDOMDocument interface associated with this document.
    */
   readonly attribute nsIDOMDocument DOMDocument;
 
   /**
    * The nsIDOMWindow that the document resides in.
    */
-  readonly attribute nsIDOMWindow window;
+  readonly attribute mozIDOMWindowProxy window;
 
   /**
    * Return the parent document accessible.
    */
   readonly attribute nsIAccessibleDocument parentDocument;
 
   /**
    * Return the count of child document accessibles.

--- a/accessible/interfaces/nsIAccessibleRetrieval.idl
+++ b/accessible/interfaces/nsIAccessibleRetrieval.idl
@@ -4,17 +4,16 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nsISupports.idl"
 
 interface nsIDOMNode;
 interface nsIAccessible;
 interface nsIWeakReference;
 interface nsIPresShell;
-interface nsIDOMWindow;
 interface nsIAccessiblePivot;
 
 /**
  * An interface for in-process accessibility clients wishing to get an
  * nsIAccessible for a given DOM node.  More documentation at:
  *   http://www.mozilla.org/projects/ui/accessibility
  */
 [scriptable, uuid(17f86615-1a3d-4021-b227-3a2ef5cbffd8)]

--- a/accessible/windows/msaa/nsWinUtils.cpp
+++ b/accessible/windows/msaa/nsWinUtils.cpp
@@ -40,18 +40,17 @@ nsRefPtrHashtable<nsPtrHashKey<void>, Do
 already_AddRefed<nsIDOMCSSStyleDeclaration>
 nsWinUtils::GetComputedStyleDeclaration(nsIContent* aContent)
 {
   nsIContent* elm = nsCoreUtils::GetDOMElementFor(aContent);
   if (!elm)
     return nullptr;
 
   // Returns number of items in style declaration
-  nsCOMPtr<nsPIDOMWindow> window =
-    do_QueryInterface(elm->OwnerDoc()->GetInnerWindow());
+  nsCOMPtr<nsPIDOMWindowInner> window = elm->OwnerDoc()->GetInnerWindow();
   if (!window)
     return nullptr;
 
   ErrorResult dummy;
   nsCOMPtr<nsICSSDeclaration> cssDecl;
   nsCOMPtr<Element> domElement(do_QueryInterface(elm));
   cssDecl = window->GetComputedStyle(*domElement, EmptyString(), dummy);
   nsCOMPtr<nsIDOMCSSStyleDeclaration> domDecl = do_QueryInterface(cssDecl);

--- a/accessible/xpcom/xpcAccessibleDocument.cpp
+++ b/accessible/xpcom/xpcAccessibleDocument.cpp
@@ -94,17 +94,17 @@ xpcAccessibleDocument::GetDOMDocument(ns
 
   if (Intl()->DocumentNode())
     CallQueryInterface(Intl()->DocumentNode(), aDOMDocument);
 
   return NS_OK;
 }
 
 NS_IMETHODIMP
-xpcAccessibleDocument::GetWindow(nsIDOMWindow** aDOMWindow)
+xpcAccessibleDocument::GetWindow(mozIDOMWindowProxy** aDOMWindow)
 {
   NS_ENSURE_ARG_POINTER(aDOMWindow);
   *aDOMWindow = nullptr;
 
   if (!Intl())
     return NS_ERROR_FAILURE;
 
   NS_IF_ADDREF(*aDOMWindow = Intl()->DocumentNode()->GetWindow());

--- a/accessible/xpcom/xpcAccessibleDocument.h
+++ b/accessible/xpcom/xpcAccessibleDocument.h
@@ -36,17 +36,17 @@ public:
                                            xpcAccessibleGeneric)
 
   // nsIAccessibleDocument
   NS_IMETHOD GetURL(nsAString& aURL) final override;
   NS_IMETHOD GetTitle(nsAString& aTitle) final override;
   NS_IMETHOD GetMimeType(nsAString& aType) final override;
   NS_IMETHOD GetDocType(nsAString& aType) final override;
   NS_IMETHOD GetDOMDocument(nsIDOMDocument** aDOMDocument) final override;
-  NS_IMETHOD GetWindow(nsIDOMWindow** aDOMWindow) final override;
+  NS_IMETHOD GetWindow(mozIDOMWindowProxy** aDOMWindow) final override;
   NS_IMETHOD GetParentDocument(nsIAccessibleDocument** aDocument)
     final override;
   NS_IMETHOD GetChildDocumentCount(uint32_t* aCount) final override;
   NS_IMETHOD GetChildDocumentAt(uint32_t aIndex,
                                 nsIAccessibleDocument** aDocument)
     final override;
   NS_IMETHOD GetVirtualCursor(nsIAccessiblePivot** aVirtualCursor)
     final override;

--- a/chrome/nsChromeRegistry.cpp
+++ b/chrome/nsChromeRegistry.cpp
@@ -308,17 +308,17 @@ nsChromeRegistry::ConvertChromeURL(nsIUR
   return NS_NewURI(aResult, path, nullptr, baseURI);
 }
 
 ////////////////////////////////////////////////////////////////////////
 
 // theme stuff
 
 
-static void FlushSkinBindingsForWindow(nsPIDOMWindow* aWindow)
+static void FlushSkinBindingsForWindow(nsPIDOMWindowOuter* aWindow)
 {
   // Get the document.
   nsCOMPtr<nsIDocument> document = aWindow->GetDoc();
   if (!document)
     return;
 
   // Annihilate all XBL bindings.
   document->FlushSkinBindings();
@@ -335,32 +335,32 @@ NS_IMETHODIMP nsChromeRegistry::RefreshS
   nsCOMPtr<nsISimpleEnumerator> windowEnumerator;
   windowMediator->GetEnumerator(nullptr, getter_AddRefs(windowEnumerator));
   bool more;
   windowEnumerator->HasMoreElements(&more);
   while (more) {
     nsCOMPtr<nsISupports> protoWindow;
     windowEnumerator->GetNext(getter_AddRefs(protoWindow));
     if (protoWindow) {
-      nsCOMPtr<nsPIDOMWindow> domWindow = do_QueryInterface(protoWindow);
+      nsCOMPtr<nsPIDOMWindowOuter> domWindow = do_QueryInterface(protoWindow);
       if (domWindow)
         FlushSkinBindingsForWindow(domWindow);
     }
     windowEnumerator->HasMoreElements(&more);
   }
 
   FlushSkinCaches();
 
   windowMediator->GetEnumerator(nullptr, getter_AddRefs(windowEnumerator));
   windowEnumerator->HasMoreElements(&more);
   while (more) {
     nsCOMPtr<nsISupports> protoWindow;
     windowEnumerator->GetNext(getter_AddRefs(protoWindow));
     if (protoWindow) {
-      nsCOMPtr<nsPIDOMWindow> domWindow = do_QueryInterface(protoWindow);
+      nsCOMPtr<nsPIDOMWindowOuter> domWindow = do_QueryInterface(protoWindow);
       if (domWindow)
         RefreshWindow(domWindow);
     }
     windowEnumerator->HasMoreElements(&more);
   }
    
   return NS_OK;
 }
@@ -372,27 +372,27 @@ nsChromeRegistry::FlushSkinCaches()
     mozilla::services::GetObserverService();
   NS_ASSERTION(obsSvc, "Couldn't get observer service.");
 
   obsSvc->NotifyObservers(static_cast<nsIChromeRegistry*>(this),
                           NS_CHROME_FLUSH_SKINS_TOPIC, nullptr);
 }
 
 // XXXbsmedberg: move this to windowmediator
-nsresult nsChromeRegistry::RefreshWindow(nsPIDOMWindow* aWindow)
+nsresult nsChromeRegistry::RefreshWindow(nsPIDOMWindowOuter* aWindow)
 {
   // Deal with our subframes first.
   nsCOMPtr<nsIDOMWindowCollection> frames = aWindow->GetFrames();
   uint32_t length;
   frames->GetLength(&length);
   uint32_t j;
   for (j = 0; j < length; j++) {
-    nsCOMPtr<nsIDOMWindow> childWin;
+    nsCOMPtr<mozIDOMWindowProxy> childWin;
     frames->Item(j, getter_AddRefs(childWin));
-    nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(childWin);
+    nsCOMPtr<nsPIDOMWindowOuter> piWindow = nsPIDOMWindowOuter::From(childWin);
     RefreshWindow(piWindow);
   }
 
   nsresult rv;
   // Get the document.
   nsCOMPtr<nsIDocument> document = aWindow->GetDoc();
   if (!document)
     return NS_OK;
@@ -498,17 +498,17 @@ nsChromeRegistry::ReloadChrome()
       // Get each dom window
       bool more;
       rv = windowEnumerator->HasMoreElements(&more);
       if (NS_FAILED(rv)) return rv;
       while (more) {
         nsCOMPtr<nsISupports> protoWindow;
         rv = windowEnumerator->GetNext(getter_AddRefs(protoWindow));
         if (NS_SUCCEEDED(rv)) {
-          nsCOMPtr<nsPIDOMWindow> domWindow = do_QueryInterface(protoWindow);
+          nsCOMPtr<nsPIDOMWindowOuter> domWindow = do_QueryInterface(protoWindow);
           if (domWindow) {
             nsIDOMLocation* location = domWindow->GetLocation();
             if (location) {
               rv = location->Reload(false);
               if (NS_FAILED(rv)) return rv;
             }
           }
         }

--- a/chrome/nsChromeRegistry.h
+++ b/chrome/nsChromeRegistry.h
@@ -17,17 +17,17 @@
 #include "nsString.h"
 #include "nsURIHashKey.h"
 #include "nsInterfaceHashtable.h"
 #include "nsXULAppAPI.h"
 #include "nsIXPConnect.h"
 
 #include "mozilla/FileLocation.h"
 
-class nsPIDOMWindow;
+class nsPIDOMWindowOuter;
 class nsIPrefBranch;
 class nsIURL;
 
 // The chrome registry is actually split between nsChromeRegistryChrome and
 // nsChromeRegistryContent. The work/data that is common to both resides in
 // the shared nsChromeRegistry implementation, with operations that only make
 // sense for one side erroring out in the other.
 
@@ -90,17 +90,17 @@ protected:
   virtual nsIURI* GetBaseURIFromPackage(const nsCString& aPackage,
                                         const nsCString& aProvider,
                                         const nsCString& aPath) = 0;
   virtual nsresult GetFlagsFromPackage(const nsCString& aPackage,
                                        uint32_t* aFlags) = 0;
 
   nsresult SelectLocaleFromPref(nsIPrefBranch* prefs);
 
-  static nsresult RefreshWindow(nsPIDOMWindow* aWindow);
+  static nsresult RefreshWindow(nsPIDOMWindowOuter* aWindow);
   static nsresult GetProviderAndPath(nsIURL* aChromeURL,
                                      nsACString& aProvider, nsACString& aPath);
 
   bool GetDirectionForLocale(const nsACString& aLocale);
 
 public:
   static already_AddRefed<nsChromeRegistry> GetSingleton();

--- a/docshell/base/LoadContext.cpp
+++ b/docshell/base/LoadContext.cpp
@@ -64,26 +64,26 @@ LoadContext::LoadContext(nsIPrincipal* a
     NS_SUCCEEDED(aOptionalBase->GetUseRemoteTabs(&mUseRemoteTabs)));
 }
 
 //-----------------------------------------------------------------------------
 // LoadContext::nsILoadContext
 //-----------------------------------------------------------------------------
 
 NS_IMETHODIMP
-LoadContext::GetAssociatedWindow(nsIDOMWindow**)
+LoadContext::GetAssociatedWindow(mozIDOMWindowProxy**)
 {
   MOZ_ASSERT(mIsNotNull);
 
   // can't support this in the parent process
   return NS_ERROR_UNEXPECTED;
 }
 
 NS_IMETHODIMP
-LoadContext::GetTopWindow(nsIDOMWindow**)
+LoadContext::GetTopWindow(mozIDOMWindowProxy**)
 {
   MOZ_ASSERT(mIsNotNull);
 
   // can't support this in the parent process
   return NS_ERROR_UNEXPECTED;
 }
 
 NS_IMETHODIMP

--- a/docshell/base/nsDSURIContentListener.cpp
+++ b/docshell/base/nsDSURIContentListener.cpp
@@ -143,18 +143,18 @@ nsDSURIContentListener::DoContent(const 
 
   if (NS_FAILED(rv)) {
     // we don't know how to handle the content
     *aContentHandler = nullptr;
     return rv;
   }
 
   if (loadFlags & nsIChannel::LOAD_RETARGETED_DOCUMENT_URI) {
-    nsCOMPtr<nsPIDOMWindow> domWindow = do_QueryInterface(
-      mDocShell ? mDocShell->GetWindow() : nullptr);
+    nsCOMPtr<nsPIDOMWindowOuter> domWindow =
+      mDocShell ? mDocShell->GetWindow() : nullptr;
     NS_ENSURE_TRUE(domWindow, NS_ERROR_FAILURE);
     domWindow->Focus();
   }
 
   return NS_OK;
 }
 
 NS_IMETHODIMP
@@ -289,25 +289,25 @@ nsDSURIContentListener::CheckOneFrameOpt
   if (!mDocShell) {
     return true;
   }
 
   // We need to check the location of this window and the location of the top
   // window, if we're not the top.  X-F-O: SAMEORIGIN requires that the
   // document must be same-origin with top window.  X-F-O: DENY requires that
   // the document must never be framed.
-  nsCOMPtr<nsPIDOMWindow> thisWindow = mDocShell->GetWindow();
+  nsCOMPtr<nsPIDOMWindowOuter> thisWindow = mDocShell->GetWindow();
   // If we don't have DOMWindow there is no risk of clickjacking
   if (!thisWindow) {
     return true;
   }
 
   // GetScriptableTop, not GetTop, because we want this to respect
   // <iframe mozbrowser> boundaries.
-  nsCOMPtr<nsPIDOMWindow> topWindow = thisWindow->GetScriptableTop();
+  nsCOMPtr<nsPIDOMWindowOuter> topWindow = thisWindow->GetScriptableTop();
 
   // if the document is in the top window, it's not in a frame.
   if (thisWindow == topWindow) {
     return true;
   }
 
   // Find the top docshell in our parent chain that doesn't have the system
   // principal and use it for the principal comparison.  Finding the top
@@ -462,23 +462,22 @@ nsDSURIContentListener::CheckFrameOption
 
 void
 nsDSURIContentListener::ReportXFOViolation(nsIDocShellTreeItem* aTopDocShellItem,
                                            nsIURI* aThisURI,
                                            XFOHeader aHeader)
 {
   MOZ_ASSERT(aTopDocShellItem, "Need a top docshell");
 
-  nsCOMPtr<nsPIDOMWindow> topOuterWindow = aTopDocShellItem->GetWindow();
+  nsCOMPtr<nsPIDOMWindowOuter> topOuterWindow = aTopDocShellItem->GetWindow();
   if (!topOuterWindow) {
     return;
   }
 
-  NS_ASSERTION(topOuterWindow->IsOuterWindow(), "Huh?");
-  nsPIDOMWindow* topInnerWindow = topOuterWindow->GetCurrentInnerWindow();
+  nsPIDOMWindowInner* topInnerWindow = topOuterWindow->GetCurrentInnerWindow();
   if (!topInnerWindow) {
     return;
   }
 
   nsCOMPtr<nsIURI> topURI;
 
   nsCOMPtr<nsIDocument> document = aTopDocShellItem->GetDocument();
   nsresult rv = document->NodePrincipal()->GetURI(getter_AddRefs(topURI));

--- a/docshell/base/nsDocShell.cpp
+++ b/docshell/base/nsDocShell.cpp
@@ -959,17 +959,18 @@ nsDocShell::GetInterface(const nsIID& aI
 
   if (aIID.Equals(NS_GET_IID(nsICommandManager))) {
     NS_ENSURE_SUCCESS(EnsureCommandHandler(), NS_ERROR_FAILURE);
     *aSink = mCommandManager;
   } else if (aIID.Equals(NS_GET_IID(nsIURIContentListener))) {
     *aSink = mContentListener;
   } else if ((aIID.Equals(NS_GET_IID(nsIScriptGlobalObject)) ||
               aIID.Equals(NS_GET_IID(nsIGlobalObject)) ||
-              aIID.Equals(NS_GET_IID(nsPIDOMWindow)) ||
+              aIID.Equals(NS_GET_IID(nsPIDOMWindowOuter)) ||
+              aIID.Equals(NS_GET_IID(mozIDOMWindowProxy)) ||
               aIID.Equals(NS_GET_IID(nsIDOMWindow)) ||
               aIID.Equals(NS_GET_IID(nsIDOMWindowInternal))) &&
              NS_SUCCEEDED(EnsureScriptEnvironment())) {
     return mScriptGlobal->QueryInterface(aIID, aSink);
   } else if (aIID.Equals(NS_GET_IID(nsIDOMDocument)) &&
              NS_SUCCEEDED(EnsureContentViewer())) {
     mContentViewer->GetDOMDocument((nsIDOMDocument**)aSink);
     return *aSink ? NS_OK : NS_NOINTERFACE;
@@ -1007,17 +1008,17 @@ nsDocShell::GetInterface(const nsIID& aI
     nsresult rv;
     nsCOMPtr<nsIWindowWatcher> wwatch =
       do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv);
     NS_ENSURE_SUCCESS(rv, rv);
 
     // Get the an auth prompter for our window so that the parenting
     // of the dialogs works as it should when using tabs.
     nsIPrompt* prompt;
-    rv = wwatch->GetNewPrompter(mScriptGlobal, &prompt);
+    rv = wwatch->GetNewPrompter(mScriptGlobal->AsOuter(), &prompt);
     NS_ENSURE_SUCCESS(rv, rv);
 
     *aSink = prompt;
     return NS_OK;
   } else if (aIID.Equals(NS_GET_IID(nsIAuthPrompt)) ||
              aIID.Equals(NS_GET_IID(nsIAuthPrompt2))) {
     return NS_SUCCEEDED(GetAuthPrompt(PROMPT_NORMAL, aIID, aSink)) ?
       NS_OK : NS_NOINTERFACE;
@@ -1075,18 +1076,17 @@ nsDocShell::GetInterface(const nsIID& aI
     }
   } else if (aIID.Equals(NS_GET_IID(nsIContentFrameMessageManager))) {
     nsCOMPtr<nsITabChild> tabChild =
       do_GetInterface(static_cast<nsIDocShell*>(this));
     nsCOMPtr<nsIContentFrameMessageManager> mm;
     if (tabChild) {
       tabChild->GetMessageManager(getter_AddRefs(mm));
     } else {
-      nsCOMPtr<nsPIDOMWindow> win = GetWindow();
-      if (win) {
+      if (nsPIDOMWindowOuter* win = GetWindow()) {
         mm = do_QueryInterface(win->GetParentTarget());
       }
     }
     *aSink = mm.get();
   } else {
     return nsDocLoader::GetInterface(aIID, aSink);
   }
 
@@ -1712,17 +1712,18 @@ nsDocShell::FirePageHideNotification(boo
 void
 nsDocShell::MaybeInitTiming()
 {
   if (mTiming && !mBlankTiming) {
     return;
   }
 
   if (mScriptGlobal && mBlankTiming) {
-    nsPIDOMWindow* innerWin = mScriptGlobal->GetCurrentInnerWindow();
+    nsPIDOMWindowInner* innerWin =
+      mScriptGlobal->AsOuter()->GetCurrentInnerWindow();
     if (innerWin && innerWin->GetPerformance()) {
       mTiming = innerWin->GetPerformance()->GetDOMTiming();
       mBlankTiming = false;
     }
   }
 
   if (!mTiming) {
     mTiming = new nsDOMNavigationTiming();
@@ -2425,18 +2426,18 @@ nsDocShell::GetAllowMedia(bool* aAllowMe
 
 NS_IMETHODIMP
 nsDocShell::SetAllowMedia(bool aAllowMedia)
 {
   mAllowMedia = aAllowMedia;
 
   // Mute or unmute audio contexts attached to the inner window.
   if (mScriptGlobal) {
-    nsPIDOMWindow* innerWin = mScriptGlobal->GetCurrentInnerWindow();
-    if (innerWin) {
+    if (nsPIDOMWindowInner* innerWin =
+        mScriptGlobal->AsOuter()->GetCurrentInnerWindow()) {
       if (aAllowMedia) {
         innerWin->UnmuteAudioContexts();
       } else {
         innerWin->MuteAudioContexts();
       }
     }
   }
 
@@ -2512,17 +2513,17 @@ nsDocShell::GetFullscreenAllowed(bool* a
   if (mFullscreenAllowed != CHECK_ATTRIBUTES) {
     *aFullscreenAllowed = (mFullscreenAllowed == PARENT_ALLOWS);
     return NS_OK;
   }
 
   // Assume false until we determine otherwise...
   *aFullscreenAllowed = false;
 
-  nsCOMPtr<nsPIDOMWindow> win = GetWindow();
+  nsCOMPtr<nsPIDOMWindowOuter> win = GetWindow();
   if (!win) {
     return NS_OK;
   }
   nsCOMPtr<Element> frameElement = win->GetFrameElementInternal();
   if (frameElement && !frameElement->IsXULElement()) {
     // We do not allow document inside any containing element other
     // than iframe to enter fullscreen.
     if (!frameElement->IsHTMLElement(nsGkAtoms::iframe)) {
@@ -2967,24 +2968,25 @@ nsDocShell::GetSessionStorageForPrincipa
                                           bool aCreate,
                                           nsIDOMStorage** aStorage)
 {
   nsCOMPtr<nsIDOMStorageManager> manager = TopSessionStorageManager();
   if (!manager) {
     return NS_ERROR_UNEXPECTED;
   }
 
-  nsCOMPtr<nsIDOMWindow> domWin = do_GetInterface(GetAsSupports(this));
+  nsCOMPtr<nsPIDOMWindowOuter> domWin = do_GetInterface(GetAsSupports(this));
 
   if (aCreate) {
-    return manager->CreateStorage(domWin, aPrincipal, aDocumentURI,
-                                  mInPrivateBrowsing, aStorage);
-  }
-
-  return manager->GetStorage(domWin, aPrincipal, mInPrivateBrowsing, aStorage);
+    return manager->CreateStorage(domWin->GetCurrentInnerWindow(), aPrincipal,
+                                  aDocumentURI, mInPrivateBrowsing, aStorage);
+  }
+
+  return manager->GetStorage(domWin->GetCurrentInnerWindow(), aPrincipal,
+                             mInPrivateBrowsing, aStorage);
 }
 
 nsresult
 nsDocShell::AddSessionStorage(nsIPrincipal* aPrincipal, nsIDOMStorage* aStorage)
 {
   RefPtr<DOMStorage> storage = static_cast<DOMStorage*>(aStorage);
   if (!storage) {
     return NS_ERROR_UNEXPECTED;
@@ -3540,38 +3542,38 @@ nsDocShell::CanAccessItem(nsIDocShellTre
     return false;
   }
 
   if (!aConsiderOpener) {
     // All done here
     return false;
   }
 
-  nsCOMPtr<nsPIDOMWindow> targetWindow = aTargetItem->GetWindow();
+  nsCOMPtr<nsPIDOMWindowOuter> targetWindow = aTargetItem->GetWindow();
   if (!targetWindow) {
     NS_ERROR("This should not happen, really");
     return false;
   }
 
-  nsCOMPtr<nsIDOMWindow> targetOpener = targetWindow->GetOpener();
+  nsCOMPtr<mozIDOMWindowProxy> targetOpener = targetWindow->GetOpener();
   nsCOMPtr<nsIWebNavigation> openerWebNav(do_GetInterface(targetOpener));
   nsCOMPtr<nsIDocShellTreeItem> openerItem(do_QueryInterface(openerWebNav));
 
   if (!openerItem) {
     return false;
   }
 
   return CanAccessItem(openerItem, aAccessingItem, false);
 }
 
 static bool
 ItemIsActive(nsIDocShellTreeItem* aItem)
 {
-  if (nsCOMPtr<nsIDOMWindow> window = aItem->GetWindow()) {
-    auto* win = static_cast<nsGlobalWindow*>(window.get());
+  if (nsCOMPtr<nsPIDOMWindowOuter> window = aItem->GetWindow()) {
+    auto* win = nsGlobalWindow::Cast(window);
     MOZ_ASSERT(win->IsOuterWindow());
     if (!win->GetClosedOuter()) {
       return true;
     }
   }
 
   return false;
 }
@@ -3818,17 +3820,17 @@ PrintDocTree(nsIDocShellTreeItem* aParen
   aParentNode->GetChildCount(&childWebshellCount);
   nsCOMPtr<nsIDocShell> parentAsDocShell(do_QueryInterface(aParentNode));
   int32_t type = aParentNode->ItemType();
   nsCOMPtr<nsIPresShell> presShell = parentAsDocShell->GetPresShell();
   RefPtr<nsPresContext> presContext;
   parentAsDocShell->GetPresContext(getter_AddRefs(presContext));
   nsIDocument* doc = presShell->GetDocument();
 
-  nsCOMPtr<nsIDOMWindow> domwin(doc->GetWindow());
+  nsCOMPtr<nsPIDOMWindowOuter> domwin(doc->GetWindow());
 
   nsCOMPtr<nsIWidget> widget;
   nsViewManager* vm = presShell->GetViewManager();
   if (vm) {
     vm->GetWidget(getter_AddRefs(widget));
   }
   dom::Element* rootElement = doc->GetRootElement();
 
@@ -4437,23 +4439,23 @@ nsDocShell::GetScriptGlobalObject()
 
 nsIDocument*
 nsDocShell::GetDocument()
 {
   NS_ENSURE_SUCCESS(EnsureContentViewer(), nullptr);
   return mContentViewer->GetDocument();
 }
 
-nsPIDOMWindow*
+nsPIDOMWindowOuter*
 nsDocShell::GetWindow()
 {
   if (NS_FAILED(EnsureScriptEnvironment())) {
     return nullptr;
   }
-  return mScriptGlobal;
+  return mScriptGlobal->AsOuter();
 }
 
 NS_IMETHODIMP
 nsDocShell::SetDeviceSizeIsPageSize(bool aValue)
 {
   if (mDeviceSizeIsPageSize != aValue) {
     mDeviceSizeIsPageSize = aValue;
     RefPtr<nsPresContext> presContext;
@@ -7570,17 +7572,17 @@ nsDocShell::EndPageLoad(nsIWebProgress* 
 
     // Handle iframe document not loading error because source was
     // a tracking URL. We make a note of this iframe node by including
     // it in a dedicated array of blocked tracking nodes under its parent
     // document. (document of parent window of blocked document)
     if (isTopFrame == false && aStatus == NS_ERROR_TRACKING_URI) {
       // frameElement is our nsIContent to be annotated
       nsCOMPtr<nsIDOMElement> frameElement;
-      nsPIDOMWindow* thisWindow = GetWindow();
+      nsPIDOMWindowOuter* thisWindow = GetWindow();
       if (!thisWindow) {
         return NS_OK;
       }
 
       frameElement = thisWindow->GetFrameElement();
       if (!frameElement) {
         return NS_OK;
       }
@@ -7809,18 +7811,17 @@ nsDocShell::EnsureContentViewer()
     return NS_ERROR_FAILURE;
   }
 
   nsCOMPtr<nsIURI> baseURI;
   nsIPrincipal* principal = GetInheritedPrincipal(false);
   nsCOMPtr<nsIDocShellTreeItem> parentItem;
   GetSameTypeParent(getter_AddRefs(parentItem));
   if (parentItem) {
-    nsCOMPtr<nsPIDOMWindow> domWin = GetWindow();
-    if (domWin) {
+    if (nsCOMPtr<nsPIDOMWindowOuter> domWin = GetWindow()) {
       nsCOMPtr<Element> parentElement = domWin->GetFrameElementInternal();
       if (parentElement) {
         baseURI = parentElement->GetBaseURI();
       }
     }
   }
 
   nsresult rv = CreateAboutBlankContentViewer(principal, baseURI);
@@ -8663,18 +8664,17 @@ nsDocShell::RestoreFromHistory()
         }
 
         // Ick, it'd be nicer to not rewalk all of the subdocs here.
         if (d->AnimationsPaused()) {
           document->SuppressEventHandling(nsIDocument::eAnimationsOnly,
                                           d->AnimationsPaused());
         }
 
-        nsCOMPtr<nsPIDOMWindow> parentWindow = d->GetWindow();
-        if (parentWindow) {
+        if (nsCOMPtr<nsPIDOMWindowOuter> parentWindow = d->GetWindow()) {
           parentSuspendCount = parentWindow->TimeoutSuspendCount();
         }
       }
     }
 
     // Use the uri from the mLSHE we had when we entered this function
     // (which need not match the document's URI if anchors are involved),
     // since that's the history entry we're loading.  Note that if we use
@@ -8683,17 +8683,17 @@ nsDocShell::RestoreFromHistory()
     nsCOMPtr<nsIURI> uri;
     origLSHE->GetURI(getter_AddRefs(uri));
     SetCurrentURI(uri, document->GetChannel(), true, 0);
   }
 
   // This is the end of our CreateContentViewer() replacement.
   // Now we simulate a load.  First, we restore the state of the javascript
   // window object.
-  nsCOMPtr<nsPIDOMWindow> privWin = GetWindow();
+  nsCOMPtr<nsPIDOMWindowOuter> privWin = GetWindow();
   NS_ASSERTION(privWin, "could not get nsPIDOMWindow interface");
 
   rv = privWin->RestoreWindowState(windowState);
   NS_ENSURE_SUCCESS(rv, rv);
 
   // Now, dispatch a title change event which would happen as the
   // <head> is parsed.
   document->NotifyPossibleTitleChange(false);
@@ -9603,17 +9603,17 @@ nsDocShell::InternalLoad(nsIURI* aURI,
 
   //
   // First, notify any nsIContentPolicy listeners about the document load.
   // Only abort the load if a content policy listener explicitly vetos it!
   //
   nsCOMPtr<Element> requestingElement;
   // Use nsPIDOMWindow since we _want_ to cross the chrome boundary if needed
   if (mScriptGlobal) {
-    requestingElement = mScriptGlobal->GetFrameElementInternal();
+    requestingElement = mScriptGlobal->AsOuter()->GetFrameElementInternal();
   }
 
   RefPtr<nsGlobalWindow> MMADeathGrip = mScriptGlobal;
 
   int16_t shouldLoad = nsIContentPolicy::ACCEPT;
   uint32_t contentType;
   bool isNewDocShell = false;
   bool isTargetTopLevelDocShell = false;
@@ -9757,34 +9757,34 @@ nsDocShell::InternalLoad(nsIURI* aURI,
 
       if (doc) {
         sandboxFlags = doc->GetSandboxFlags();
         if (sandboxFlags & SANDBOXED_AUXILIARY_NAVIGATION) {
           return NS_ERROR_DOM_INVALID_ACCESS_ERR;
         }
       }
 
-      nsCOMPtr<nsPIDOMWindow> win = GetWindow();
+      nsCOMPtr<nsPIDOMWindowOuter> win = GetWindow();
       NS_ENSURE_TRUE(win, NS_ERROR_NOT_AVAILABLE);
 
       nsDependentString name(aWindowTarget);
-      nsCOMPtr<nsIDOMWindow> newWin;
+      nsCOMPtr<nsPIDOMWindowOuter> newWin;
       nsAutoCString spec;
       if (aURI) {
         aURI->GetSpec(spec);
       }
       rv = win->OpenNoNavigate(NS_ConvertUTF8toUTF16(spec),
                                name,  // window name
                                EmptyString(), // Features
                                getter_AddRefs(newWin));
 
       // In some cases the Open call doesn't actually result in a new
       // window being opened.  We can detect these cases by examining the
       // document in |newWin|, if any.
-      nsCOMPtr<nsPIDOMWindow> piNewWin = do_QueryInterface(newWin);
+      nsCOMPtr<nsPIDOMWindowOuter> piNewWin = do_QueryInterface(newWin);
       if (piNewWin) {
         nsCOMPtr<nsIDocument> newDoc = piNewWin->GetExtantDoc();
         if (!newDoc || newDoc->IsInitialDocument()) {
           isNewWindow = true;
           aFlags |= INTERNAL_LOAD_FLAGS_FIRST_LOAD;
 
           // set opener object to null for noreferrer
           if (aFlags & INTERNAL_LOAD_FLAGS_NO_OPENER) {
@@ -9827,17 +9827,17 @@ nsDocShell::InternalLoad(nsIURI* aURI,
         if (isNewWindow) {
           //
           // At this point, a new window has been created, but the
           // URI did not have any data associated with it...
           //
           // So, the best we can do, is to tear down the new window
           // that was just created!
           //
-          if (nsCOMPtr<nsPIDOMWindow> domWin = targetDocShell->GetWindow()) {
+          if (nsCOMPtr<nsPIDOMWindowOuter> domWin = targetDocShell->GetWindow()) {
             domWin->Close();
           }
         }
         //
         // NS_ERROR_NO_CONTENT should not be returned to the
         // caller... This is an internal error code indicating that
         // the URI had no data associated with it - probably a
         // helper-app style protocol (ie. mailto://)
@@ -10182,17 +10182,17 @@ nsDocShell::InternalLoad(nsIURI* aURI,
       if (win) {
         // Fire a hashchange event URIs differ, and only in their hashes.
         bool doHashchange = sameExceptHashes && !curHash.Equals(newHash);
 
         if (historyNavBetweenSameDoc || doHashchange) {
           win->DispatchSyncPopState();
         }
 
-        if (needsScrollPosUpdate && win->HasActiveDocument()) {
+        if (needsScrollPosUpdate && win->AsInner()->HasActiveDocument()) {
           SetCurScrollPosEx(bx, by);
         }
 
         if (doHashchange) {
           // Note that currentURI hasn't changed because it's on the
           // stack, so we can just use it directly as the old URI.
           win->DispatchAsyncHashchange(currentURI, aURI);
         }
@@ -10525,17 +10525,17 @@ nsDocShell::DoURILoad(nsIURI* aURI,
     // page. To avoid recursion, we skip this check if aURI's scheme is "about".
 
     // The goal is to prevent leaking sensitive information of an invalid page of
     // an app, so allowing about:blank would not be conflict to the goal.
     bool isAbout = false;
     rv = aURI->SchemeIs("about", &isAbout);
     if (NS_SUCCEEDED(rv) && !isAbout &&
         nsIDocShell::GetIsApp()) {
-      nsCOMPtr<Element> frameElement = mScriptGlobal->GetFrameElementInternal();
+      nsCOMPtr<Element> frameElement = mScriptGlobal->AsOuter()->GetFrameElementInternal();
       if (frameElement) {
         nsCOMPtr<nsIMozBrowserFrame> browserFrame = do_QueryInterface(frameElement);
         // |GetReallyIsApp| indicates the browser frame is a valid app or widget.
         // Here we prevent navigating to an app or widget which loses its validity
         // by loading invalid page or other way.
         if (browserFrame && !browserFrame->GetReallyIsApp()) {
           nsCOMPtr<nsIObserverService> serv = services::GetObserverService();
           if (serv) {
@@ -10549,17 +10549,17 @@ nsDocShell::DoURILoad(nsIURI* aURI,
 
   // open a channel for the url
   nsCOMPtr<nsIChannel> channel;
 
   bool isSrcdoc = !aSrcdoc.IsVoid();
 
   nsCOMPtr<nsINode> requestingNode;
   if (mScriptGlobal) {
-    requestingNode = mScriptGlobal->GetFrameElementInternal();
+    requestingNode = mScriptGlobal->AsOuter()->GetFrameElementInternal();
     if (!requestingNode) {
       requestingNode = mScriptGlobal->GetExtantDoc();
     }
   }
 
   bool isSandBoxed = mSandboxFlags & SANDBOXED_ORIGIN;
   // only inherit if we have a triggeringPrincipal
   bool inherit = false;
@@ -12959,18 +12959,18 @@ nsDocShell::EnsureFind()
   // we promise that the nsIWebBrowserFind that we return has been set
   // up to point to the focused, or content window, so we have to
   // set that up each time.
 
   nsIScriptGlobalObject* scriptGO = GetScriptGlobalObject();
   NS_ENSURE_TRUE(scriptGO, NS_ERROR_UNEXPECTED);
 
   // default to our window
-  nsCOMPtr<nsPIDOMWindow> ourWindow = do_QueryInterface(scriptGO);
-  nsCOMPtr<nsPIDOMWindow> windowToSearch;
+  nsCOMPtr<nsPIDOMWindowOuter> ourWindow = do_QueryInterface(scriptGO);
+  nsCOMPtr<nsPIDOMWindowOuter> windowToSearch;
   nsFocusManager::GetFocusedDescendant(ourWindow, true,
                                        getter_AddRefs(windowToSearch));
 
   nsCOMPtr<nsIWebBrowserFindInFrames> findInFrames = do_QueryInterface(mFind);
   if (!findInFrames) {
     return NS_ERROR_NO_INTERFACE;
   }
 
@@ -13133,52 +13133,52 @@ nsDocShell::GetAuthPrompt(uint32_t aProm
   NS_ENSURE_SUCCESS(rv, rv);
 
   rv = EnsureScriptEnvironment();
   NS_ENSURE_SUCCESS(rv, rv);
 
   // Get the an auth prompter for our window so that the parenting
   // of the dialogs works as it should when using tabs.
 
-  return wwatch->GetPrompt(mScriptGlobal, aIID,
+  return wwatch->GetPrompt(mScriptGlobal->AsOuter(), aIID,
                            reinterpret_cast<void**>(aResult));
 }
 
 //*****************************************************************************
 // nsDocShell::nsILoadContext
 //*****************************************************************************
 
 NS_IMETHODIMP
-nsDocShell::GetAssociatedWindow(nsIDOMWindow** aWindow)
+nsDocShell::GetAssociatedWindow(mozIDOMWindowProxy** aWindow)
 {
   CallGetInterface(this, aWindow);
   return NS_OK;
 }
 
 NS_IMETHODIMP
-nsDocShell::GetTopWindow(nsIDOMWindow** aWindow)
-{
-  nsCOMPtr<nsPIDOMWindow> win = GetWindow();
+nsDocShell::GetTopWindow(mozIDOMWindowProxy** aWindow)
+{
+  nsCOMPtr<nsPIDOMWindowOuter> win = GetWindow();
   if (win) {
     win = win->GetTop();
   }
   win.forget(aWindow);
   return NS_OK;
 }
 
 NS_IMETHODIMP
 nsDocShell::GetTopFrameElement(nsIDOMElement** aElement)
 {
   *aElement = nullptr;
-  nsCOMPtr<nsPIDOMWindow> win = GetWindow();
+  nsCOMPtr<nsPIDOMWindowOuter> win = GetWindow();
   if (!win) {
     return NS_OK;
   }
 
-  nsCOMPtr<nsPIDOMWindow> top = win->GetScriptableTop();
+  nsCOMPtr<nsPIDOMWindowOuter> top = win->GetScriptableTop();
   NS_ENSURE_TRUE(top, NS_ERROR_FAILURE);
 
   // GetFrameElementInternal, /not/ GetScriptableFrameElement -- if |top| is
   // inside <iframe mozbrowser>, we want to return the iframe, not null.
   // And we want to cross the content/chrome boundary.
   nsCOMPtr<nsIDOMElement> elt =
     do_QueryInterface(top->GetFrameElementInternal());
   elt.forget(aElement);
@@ -13290,17 +13290,17 @@ nsDocShell::EnsureCommandHandler()
 {
   if (!mCommandManager) {
     nsCOMPtr<nsPICommandUpdater> commandUpdater =
       do_CreateInstance("@mozilla.org/embedcomp/command-manager;1");
     if (!commandUpdater) {
       return NS_ERROR_OUT_OF_MEMORY;
     }
 
-    nsCOMPtr<nsIDOMWindow> domWindow = GetWindow();
+    nsCOMPtr<nsPIDOMWindowOuter> domWindow = GetWindow();
     nsresult rv = commandUpdater->Init(domWindow);
     if (NS_SUCCEEDED(rv)) {
       mCommandManager = do_QueryInterface(commandUpdater);
     }
   }
 
   return mCommandManager ? NS_OK : NS_ERROR_FAILURE;
 }
@@ -13579,20 +13579,20 @@ nsDocShell::OnLinkClickSync(nsIContent* 
   // referer, since the current URI in this docshell may be a
   // new document that we're in the process of loading.
   nsCOMPtr<nsIDocument> refererDoc = aContent->OwnerDoc();
   NS_ENSURE_TRUE(refererDoc, NS_ERROR_UNEXPECTED);
 
   // Now check that the refererDoc's inner window is the current inner
   // window for mScriptGlobal.  If it's not, then we don't want to
   // follow this link.
-  nsPIDOMWindow* refererInner = refererDoc->GetInnerWindow();
+  nsPIDOMWindowInner* refererInner = refererDoc->GetInnerWindow();
   NS_ENSURE_TRUE(refererInner, NS_ERROR_UNEXPECTED);
   if (!mScriptGlobal ||
-      mScriptGlobal->GetCurrentInnerWindow() != refererInner) {
+      mScriptGlobal->AsOuter()->GetCurrentInnerWindow() != refererInner) {
     // We're no longer the current inner window
     return NS_OK;
   }
 
   nsCOMPtr<nsIURI> referer = refererDoc->GetDocumentURI();
   uint32_t refererPolicy = refererDoc->GetReferrerPolicy();
 
   // get referrer attribute from clicked link and parse it

--- a/docshell/base/nsDocShell.h
+++ b/docshell/base/nsDocShell.h
@@ -215,18 +215,18 @@ public:
   NS_IMETHOD OnLeaveLink() override;
 
   nsDocShellInfoLoadType ConvertLoadTypeToDocShellLoadInfo(uint32_t aLoadType);
   uint32_t ConvertDocShellLoadInfoToLoadType(
     nsDocShellInfoLoadType aDocShellLoadType);
 
   // Don't use NS_DECL_NSILOADCONTEXT because some of nsILoadContext's methods
   // are shared with nsIDocShell (appID, etc.) and can't be declared twice.
-  NS_IMETHOD GetAssociatedWindow(nsIDOMWindow**) override;
-  NS_IMETHOD GetTopWindow(nsIDOMWindow**) override;
+  NS_IMETHOD GetAssociatedWindow(mozIDOMWindowProxy**) override;
+  NS_IMETHOD GetTopWindow(mozIDOMWindowProxy**) override;
   NS_IMETHOD GetTopFrameElement(nsIDOMElement**) override;
   NS_IMETHOD GetNestedFrameId(uint64_t*) override;
   NS_IMETHOD IsAppOfType(uint32_t, bool*) override;
   NS_IMETHOD GetIsContent(bool*) override;
   NS_IMETHOD GetUsePrivateBrowsing(bool*) override;
   NS_IMETHOD SetUsePrivateBrowsing(bool) override;
   NS_IMETHOD SetPrivateBrowsing(bool) override;
   NS_IMETHOD GetUseRemoteTabs(bool*) override;

--- a/docshell/base/nsDocShellEditorData.cpp
+++ b/docshell/base/nsDocShellEditorData.cpp
@@ -71,17 +71,17 @@ nsresult
 nsDocShellEditorData::CreateEditor()
 {
   nsCOMPtr<nsIEditingSession> editingSession;
   nsresult rv = GetEditingSession(getter_AddRefs(editingSession));
   if (NS_FAILED(rv)) {
     return rv;
   }
 
-  nsCOMPtr<nsIDOMWindow> domWindow =
+  nsCOMPtr<nsPIDOMWindowOuter> domWindow =
     mDocShell ? mDocShell->GetWindow() : nullptr;
   rv = editingSession->SetupEditorOnWindow(domWindow);
   if (NS_FAILED(rv)) {
     return rv;
   }
 
   return NS_OK;
 }
@@ -144,51 +144,49 @@ nsDocShellEditorData::EnsureEditingSessi
 }
 
 nsresult
 nsDocShellEditorData::DetachFromWindow()
 {
   NS_ASSERTION(mEditingSession,
                "Can't detach when we don't have a session to detach!");
 
-  nsCOMPtr<nsIDOMWindow> domWindow =
+  nsCOMPtr<nsPIDOMWindowOuter> domWindow =
     mDocShell ? mDocShell->GetWindow() : nullptr;
   nsresult rv = mEditingSession->DetachFromWindow(domWindow);
   NS_ENSURE_SUCCESS(rv, rv);
 
   mIsDetached = true;
   mDetachedMakeEditable = mMakeEditable;
   mMakeEditable = false;
 
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(domWindow);
-  nsCOMPtr<nsIDocument> doc = window->GetDoc();
+  nsCOMPtr<nsIDocument> doc = domWindow->GetDoc();
   nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(doc);
   if (htmlDoc) {
     mDetachedEditingState = htmlDoc->GetEditingState();
   }
 
   mDocShell = nullptr;
 
   return NS_OK;
 }
 
 nsresult
 nsDocShellEditorData::ReattachToWindow(nsIDocShell* aDocShell)
 {
   mDocShell = aDocShell;
 
-  nsCOMPtr<nsIDOMWindow> domWindow =
+  nsCOMPtr<nsPIDOMWindowOuter> domWindow =
     mDocShell ? mDocShell->GetWindow() : nullptr;
   nsresult rv = mEditingSession->ReattachToWindow(domWindow);
   NS_ENSURE_SUCCESS(rv, rv);
 
   mIsDetached = false;
   mMakeEditable = mDetachedMakeEditable;
 
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(domWindow);
-  nsCOMPtr<nsIDocument> doc = window->GetDoc();
+  nsCOMPtr<nsIDocument> doc = domWindow->GetDoc();
   nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(doc);
   if (htmlDoc) {
     htmlDoc->SetEditingState(mDetachedEditingState);
   }
 
   return NS_OK;
 }

--- a/docshell/base/nsIDocShell.idl
+++ b/docshell/base/nsIDocShell.idl
@@ -38,17 +38,17 @@ interface nsIPrincipal;
 interface nsIWebBrowserPrint;
 interface nsIPrivacyTransitionObserver;
 interface nsIReflowObserver;
 interface nsIScrollObserver;
 interface nsITabParent;
 
 typedef unsigned long nsLoadFlags;
 
-[scriptable, builtinclass, uuid(98358234-3936-4b95-b051-fcda4e55b52d)]
+[scriptable, builtinclass, uuid(049234fe-da10-478b-bc5d-bc6f9a1ba63d)]
 interface nsIDocShell : nsIDocShellTreeItem
 {
   /**
    * Loads a given URI.  This will give priority to loading the requested URI
    * in the object implementing	this interface.  If it can't be loaded here
    * however, the URL dispatcher will go through its normal process of content
    * loading.
    *

--- a/docshell/base/nsIDocShellTreeItem.idl
+++ b/docshell/base/nsIDocShellTreeItem.idl
@@ -3,26 +3,26 @@
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nsISupports.idl"
 
 interface nsIDocShellTreeOwner;
 interface nsIDocument;
-interface nsPIDOMWindow;
+interface nsPIDOMWindowOuter;
 
 
 /**
  * The nsIDocShellTreeItem supplies the methods that are required of any item
  * that wishes to be able to live within the docshell tree either as a middle
  * node or a leaf. 
  */
 
-[scriptable, uuid(edb99640-8378-4106-8673-e701a086eb1c)]
+[scriptable, uuid(9b7c586f-9214-480c-a2c4-49b526fff1a6)]
 interface nsIDocShellTreeItem : nsISupports
 {
 	/*
 	name of the DocShellTreeItem
 	*/
 	attribute AString name;
 
         /**
@@ -174,11 +174,11 @@ interface nsIDocShellTreeItem : nsISuppo
 	*/
 	nsIDocShellTreeItem findChildWithName(in wstring aName,
 	                                      in boolean aRecurse,
 	                                      in boolean aSameType,
 	                                      in nsIDocShellTreeItem aRequestor,
 	                                      in nsIDocShellTreeItem aOriginalRequestor);
 
   [noscript,nostdcall,notxpcom] nsIDocument getDocument();
-  [noscript,nostdcall,notxpcom] nsPIDOMWindow getWindow();
+  [noscript,nostdcall,notxpcom] nsPIDOMWindowOuter getWindow();
 };

--- a/docshell/base/nsILoadContext.idl
+++ b/docshell/base/nsILoadContext.idl
@@ -1,49 +1,49 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
  * vim: ft=cpp tw=78 sw=2 et ts=2 sts=2 cin
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nsISupports.idl"
 
-interface nsIDOMWindow;
+interface mozIDOMWindowProxy;
 interface nsIDOMElement;
 
 %{C++
 #ifdef MOZILLA_INTERNAL_API
 #include "mozilla/BasePrincipal.h" // for DocShellOriginAttributes
 #endif
 %}
 
 /**
  * An nsILoadContext represents the context of a load.  This interface
  * can be queried for various information about where the load is
  * happening.
  */
-[scriptable, uuid(c71ef717-8fb9-425e-98ef-aef5894890f8)]
+[scriptable, uuid(2813a7a3-d084-4d00-acd0-f76620315c02)]
 interface nsILoadContext : nsISupports
 {
   /**
    * associatedWindow is the window with which the load is associated, if any.
    * Note that the load may be triggered by a document which is different from
    * the document in associatedWindow, and in fact the source of the load need
    * not be same-origin with the document in associatedWindow.  This attribute
    * may be null if there is no associated window.
    */
-  readonly attribute nsIDOMWindow associatedWindow;
+  readonly attribute mozIDOMWindowProxy associatedWindow;
 
   /**
    * topWindow is the top window which is of same type as associatedWindow.
    * This is equivalent to associatedWindow.top, but is provided here as a
    * convenience.  All the same caveats as associatedWindow of apply, of
    * course.  This attribute may be null if there is no associated window.
    */
-  readonly attribute nsIDOMWindow topWindow;
+  readonly attribute mozIDOMWindowProxy topWindow;
 
   /**
    * topFrameElement is the <iframe>, <frame>, or <browser> element which
    * contains the topWindow with which the load is associated.
    *
    * Note that we may have a topFrameElement even when we don't have an
    * associatedWindow, if the topFrameElement's content lives out of process.
    * topFrameElement is available in single-process and multiprocess contexts.

--- a/dom/activities/Activity.cpp
+++ b/dom/activities/Activity.cpp
@@ -29,17 +29,17 @@ NS_IMPL_CYCLE_COLLECTION_TRACE_END
 
 /* virtual */ JSObject*
 Activity::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
 {
   return MozActivityBinding::Wrap(aCx, this, aGivenProto);
 }
 
 nsresult
-Activity::Initialize(nsPIDOMWindow* aWindow,
+Activity::Initialize(nsPIDOMWindowInner* aWindow,
                      JSContext* aCx,
                      const ActivityOptions& aOptions)
 {
   MOZ_ASSERT(aWindow);
 
   nsCOMPtr<nsIDocument> document = aWindow->GetExtantDoc();
 
   bool isActive;
@@ -92,13 +92,13 @@ Activity::Initialize(nsPIDOMWindow* aWin
 
 Activity::~Activity()
 {
   if (mProxy) {
     mProxy->Cleanup();
   }
 }
 
-Activity::Activity(nsPIDOMWindow* aWindow)
+Activity::Activity(nsPIDOMWindowInner* aWindow)
   : DOMRequest(aWindow)
 {
 }

--- a/dom/activities/Activity.h
+++ b/dom/activities/Activity.h
@@ -25,31 +25,31 @@ public:
 
   virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
 
   static already_AddRefed<Activity>
   Constructor(const GlobalObject& aOwner,
               const ActivityOptions& aOptions,
               ErrorResult& aRv)
   {
-    nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aOwner.GetAsSupports());
+    nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aOwner.GetAsSupports());
     if (!window) {
       aRv.Throw(NS_ERROR_UNEXPECTED);
       return nullptr;
     }
 
     RefPtr<Activity> activity = new Activity(window);
     aRv = activity->Initialize(window, aOwner.Context(), aOptions);
     return activity.forget();
   }
 
-  explicit Activity(nsPIDOMWindow* aWindow);
+  explicit Activity(nsPIDOMWindowInner* aWindow);
 
 protected:
-  nsresult Initialize(nsPIDOMWindow* aWindow,
+  nsresult Initialize(nsPIDOMWindowInner* aWindow,
                       JSContext* aCx,
                       const ActivityOptions& aOptions);
 
   nsCOMPtr<nsIActivityProxy> mProxy;
 
   ~Activity();
 };

--- a/dom/activities/interfaces/nsIActivityProxy.idl
+++ b/dom/activities/interfaces/nsIActivityProxy.idl
@@ -1,20 +1,20 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nsISupports.idl"
 
-interface nsIDOMWindow;
+interface mozIDOMWindow;
 
 /**
   * Implemented by @mozilla.org/dom/activities/proxy;1
   */
-[scriptable, uuid(e04c0bbc-ab7d-41ba-b801-1068dd58660b)]
+[scriptable, uuid(87653623-d864-4b03-8874-96808b8cdb81)]
 interface nsIActivityProxy : nsISupports
 {
     void startActivity(in nsISupports /* MozActivity */ activity,
                        in jsval options,
-                       in nsIDOMWindow window,
+                       in mozIDOMWindow window,
                        in unsigned long long childID);
     void cleanup();
 };

--- a/dom/archivereader/ArchiveReader.cpp
+++ b/dom/archivereader/ArchiveReader.cpp
@@ -23,17 +23,17 @@ using namespace mozilla::dom;
 USING_ARCHIVEREADER_NAMESPACE
 
 /* static */ already_AddRefed<ArchiveReader>
 ArchiveReader::Constructor(const GlobalObject& aGlobal,
                            Blob& aBlob,
                            const ArchiveReaderOptions& aOptions,
                            ErrorResult& aError)
 {
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports());
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aGlobal.GetAsSupports());
   if (!window) {
     aError.Throw(NS_ERROR_UNEXPECTED);
     return nullptr;
   }
 
   nsAutoCString encoding;
   if (!EncodingUtils::FindEncodingForLabelNoReplacement(aOptions.mEncoding,
                                                         encoding)) {
@@ -41,17 +41,17 @@ ArchiveReader::Constructor(const GlobalO
     return nullptr;
   }
 
   RefPtr<ArchiveReader> reader =
     new ArchiveReader(aBlob, window, encoding);
   return reader.forget();
 }
 
-ArchiveReader::ArchiveReader(Blob& aBlob, nsPIDOMWindow* aWindow,
+ArchiveReader::ArchiveReader(Blob& aBlob, nsPIDOMWindowInner* aWindow,
                              const nsACString& aEncoding)
   : mBlobImpl(aBlob.Impl())
   , mWindow(aWindow)
   , mStatus(NOT_STARTED)
   , mEncoding(aEncoding)
 {
   MOZ_ASSERT(aWindow);
 }

--- a/dom/archivereader/ArchiveReader.h
+++ b/dom/archivereader/ArchiveReader.h
@@ -38,20 +38,20 @@ class ArchiveReader final : public nsISu
 public:
   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(ArchiveReader)
 
   static already_AddRefed<ArchiveReader>
   Constructor(const GlobalObject& aGlobal, Blob& aBlob,
               const ArchiveReaderOptions& aOptions, ErrorResult& aError);
 
-  ArchiveReader(Blob& aBlob, nsPIDOMWindow* aWindow,
+  ArchiveReader(Blob& aBlob, nsPIDOMWindowInner* aWindow,
                 const nsACString& aEncoding);
 
-  nsIDOMWindow* GetParentObject() const
+  nsPIDOMWindowInner* GetParentObject() const
   {
     return mWindow;
   }
 
   virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
 
   already_AddRefed<ArchiveRequest> GetFilenames();
   already_AddRefed<ArchiveRequest> GetFile(const nsAString& filename);
@@ -80,17 +80,17 @@ private:
 
   void RequestReady(ArchiveRequest* aRequest);
 
 protected:
   // The archive blob/file
   RefPtr<BlobImpl> mBlobImpl;
 
   // The window is needed by the requests
-  nsCOMPtr<nsPIDOMWindow> mWindow;
+  nsCOMPtr<nsPIDOMWindowInner> mWindow;
 
   // Are we ready to return data?
   enum {
     NOT_STARTED = 0,
     WORKING,
     READY
   } mStatus;

--- a/dom/archivereader/ArchiveRequest.cpp
+++ b/dom/archivereader/ArchiveRequest.cpp
@@ -44,17 +44,17 @@ ArchiveRequestEvent::Run()
 {
   MOZ_ASSERT(mRequest, "the request is not longer valid");
   mRequest->Run();
   return NS_OK;
 }
 
 // ArchiveRequest
 
-ArchiveRequest::ArchiveRequest(nsPIDOMWindow* aWindow,
+ArchiveRequest::ArchiveRequest(nsPIDOMWindowInner* aWindow,
                                ArchiveReader* aReader)
 : DOMRequest(aWindow),
   mArchiveReader(aReader)
 {
   MOZ_ASSERT(aReader);
 
   MOZ_COUNT_CTOR(ArchiveRequest);
 
@@ -252,17 +252,17 @@ ArchiveRequest::GetFilesResult(JSContext
   }
 
   aValue.setObject(*array);
   return NS_OK;
 }
 
 // static
 already_AddRefed<ArchiveRequest>
-ArchiveRequest::Create(nsPIDOMWindow* aOwner,
+ArchiveRequest::Create(nsPIDOMWindowInner* aOwner,
                        ArchiveReader* aReader)
 {
   NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
 
   RefPtr<ArchiveRequest> request = new ArchiveRequest(aOwner, aReader);
 
   return request.forget();
 }

--- a/dom/archivereader/ArchiveRequest.h
+++ b/dom/archivereader/ArchiveRequest.h
@@ -29,17 +29,17 @@ public:
   virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
 
   ArchiveReader* Reader() const;
 
   NS_DECL_ISUPPORTS_INHERITED
 
   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ArchiveRequest, DOMRequest)
 
-  ArchiveRequest(nsPIDOMWindow* aWindow,
+  ArchiveRequest(nsPIDOMWindowInner* aWindow,
                  ArchiveReader* aReader);
 
   // nsIDOMEventTarget
   virtual nsresult PreHandleEvent(EventChainPreVisitor& aVisitor) override;
 
 public:
   // This is called by the DOMArchiveRequestEvent
   void Run();
@@ -47,17 +47,17 @@ public:
   // Set the types for this request
   void OpGetFilenames();
   void OpGetFile(const nsAString& aFilename);
   void OpGetFiles();
 
   nsresult ReaderReady(nsTArray<RefPtr<File>>& aFileList, nsresult aStatus);
 
 public: // static
-  static already_AddRefed<ArchiveRequest> Create(nsPIDOMWindow* aOwner,
+  static already_AddRefed<ArchiveRequest> Create(nsPIDOMWindowInner* aOwner,
                                                  ArchiveReader* aReader);
 
 private:
   ~ArchiveRequest();
 
   nsresult GetFilenamesResult(JSContext* aCx,
                               JS::Value* aValue,
                               nsTArray<RefPtr<File>>& aFileList);

--- a/dom/audiochannel/AudioChannelAgent.cpp
+++ b/dom/audiochannel/AudioChannelAgent.cpp
@@ -59,66 +59,60 @@ AudioChannelAgent::Shutdown()
 
 NS_IMETHODIMP AudioChannelAgent::GetAudioChannelType(int32_t *aAudioChannelType)
 {
   *aAudioChannelType = mAudioChannelType;
   return NS_OK;
 }
 
 NS_IMETHODIMP
-AudioChannelAgent::Init(nsIDOMWindow* aWindow, int32_t aChannelType,
+AudioChannelAgent::Init(mozIDOMWindow* aWindow, int32_t aChannelType,
                         nsIAudioChannelAgentCallback *aCallback)
 {
-  return InitInternal(aWindow, aChannelType, aCallback,
-                      /* useWeakRef = */ false);
+  return InitInternal(nsPIDOMWindowInner::From(aWindow), aChannelType,
+                      aCallback, /* useWeakRef = */ false);
 }
 
 NS_IMETHODIMP
-AudioChannelAgent::InitWithWeakCallback(nsIDOMWindow* aWindow,
+AudioChannelAgent::InitWithWeakCallback(mozIDOMWindow* aWindow,
                                         int32_t aChannelType,
                                         nsIAudioChannelAgentCallback *aCallback)
 {
-  return InitInternal(aWindow, aChannelType, aCallback,
-                      /* useWeakRef = */ true);
+  return InitInternal(nsPIDOMWindowInner::From(aWindow), aChannelType,
+                      aCallback, /* useWeakRef = */ true);
 }
 
 nsresult
-AudioChannelAgent::FindCorrectWindow(nsIDOMWindow* aWindow)
+AudioChannelAgent::FindCorrectWindow(nsPIDOMWindowInner* aWindow)
 {
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aWindow);
-  MOZ_ASSERT(window->IsInnerWindow());
+  MOZ_ASSERT(aWindow->IsInnerWindow());
 
-  mWindow = window->GetScriptableTop();
+  mWindow = aWindow->GetScriptableTop();
   if (NS_WARN_IF(!mWindow)) {
     return NS_OK;
   }
 
-  mWindow = mWindow->GetOuterWindow();
-  if (NS_WARN_IF(!mWindow)) {
-    return NS_ERROR_FAILURE;
-  }
-
   // From here we do an hack for nested iframes.
   // The system app doesn't have access to the nested iframe objects so it
   // cannot control the volume of the agents running in nested apps. What we do
   // here is to assign those Agents to the top scriptable window of the parent
   // iframe (what is controlled by the system app).
   // For doing this we go recursively back into the chain of windows until we
   // find apps that are not the system one.
-  window = mWindow->GetParent();
-  if (!window || window == mWindow) {
+  nsCOMPtr<nsPIDOMWindowOuter> outerParent = mWindow->GetParent();
+  if (!outerParent || outerParent == mWindow) {
     return NS_OK;
   }
 
-  window = window->GetCurrentInnerWindow();
-  if (!window) {
+  nsCOMPtr<nsPIDOMWindowInner> parent = outerParent->GetCurrentInnerWindow();
+  if (!parent) {
     return NS_OK;
   }
 
-  nsCOMPtr<nsIDocument> doc = window->GetExtantDoc();
+  nsCOMPtr<nsIDocument> doc = parent->GetExtantDoc();
   if (!doc) {
     return NS_OK;
   }
 
   nsCOMPtr<nsIPrincipal> principal = doc->NodePrincipal();
 
   uint32_t appId;
   nsresult rv = principal->GetAppId(&appId);
@@ -147,21 +141,22 @@ AudioChannelAgent::FindCorrectWindow(nsI
   if (NS_WARN_IF(NS_FAILED(rv))) {
     return rv;
   }
 
   if (systemAppId == appId) {
     return NS_OK;
   }
 
-  return FindCorrectWindow(window);
+  return FindCorrectWindow(parent);
 }
 
 nsresult
-AudioChannelAgent::InitInternal(nsIDOMWindow* aWindow, int32_t aChannelType,
+AudioChannelAgent::InitInternal(nsPIDOMWindowInner* aWindow,
+                                int32_t aChannelType,
                                 nsIAudioChannelAgentCallback *aCallback,
                                 bool aUseWeakRef)
 {
   // We syncd the enum of channel type between nsIAudioChannelAgent.idl and
   // AudioChannelBinding.h the same.
   MOZ_ASSERT(int(AUDIO_AGENT_CHANNEL_NORMAL) == int(AudioChannel::Normal) &&
              int(AUDIO_AGENT_CHANNEL_CONTENT) == int(AudioChannel::Content) &&
              int(AUDIO_AGENT_CHANNEL_NOTIFICATION) == int(AudioChannel::Notification) &&
@@ -177,19 +172,18 @@ AudioChannelAgent::InitInternal(nsIDOMWi
       aChannelType < AUDIO_AGENT_CHANNEL_NORMAL) {
     return NS_ERROR_FAILURE;
   }
 
   if (NS_WARN_IF(!aWindow)) {
     return NS_OK;
   }
 
-  nsCOMPtr<nsPIDOMWindow> pInnerWindow = do_QueryInterface(aWindow);
-  MOZ_ASSERT(pInnerWindow->IsInnerWindow());
-  mInnerWindowID = pInnerWindow->WindowID();
+  MOZ_ASSERT(aWindow->IsInnerWindow());
+  mInnerWindowID = aWindow->WindowID();
 
   nsresult rv = FindCorrectWindow(aWindow);
   if (NS_WARN_IF(NS_FAILED(rv))) {
     return rv;
   }
 
   mAudioChannelType = aChannelType;

--- a/dom/audiochannel/AudioChannelAgent.h
+++ b/dom/audiochannel/AudioChannelAgent.h
@@ -12,17 +12,18 @@
 #include "nsCOMPtr.h"
 #include "nsWeakPtr.h"
 
 #define NS_AUDIOCHANNELAGENT_CONTRACTID "@mozilla.org/audiochannelagent;1"
 // f27688e2-3dd7-11e2-904e-10bf48d64bd4
 #define NS_AUDIOCHANNELAGENT_CID {0xf27688e2, 0x3dd7, 0x11e2, \
       {0x90, 0x4e, 0x10, 0xbf, 0x48, 0xd6, 0x4b, 0xd4}}
 
-class nsPIDOMWindow;
+class nsPIDOMWindowInner;
+class nsPIDOMWindowOuter;
 
 namespace mozilla {
 namespace dom {
 
 /* Header file */
 class AudioChannelAgent : public nsIAudioChannelAgent
 {
 public:
@@ -31,40 +32,40 @@ public:
 
   NS_DECL_CYCLE_COLLECTION_CLASS(AudioChannelAgent)
 
   AudioChannelAgent();
 
   void WindowVolumeChanged();
   void WindowAudioCaptureChanged(uint64_t aInnerWindowID, bool aCapture);
 
-  nsPIDOMWindow* Window() const
+  nsPIDOMWindowOuter* Window() const
   {
     return mWindow;
   }
 
   uint64_t WindowID() const;
   uint64_t InnerWindowID() const;
 
 private:
   virtual ~AudioChannelAgent();
 
   // Returns mCallback if that's non-null, or otherwise tries to get an
   // nsIAudioChannelAgentCallback out of mWeakCallback.
   already_AddRefed<nsIAudioChannelAgentCallback> GetCallback();
 
-  nsresult InitInternal(nsIDOMWindow* aWindow, int32_t aAudioAgentType,
+  nsresult InitInternal(nsPIDOMWindowInner* aWindow, int32_t aAudioAgentType,
                         nsIAudioChannelAgentCallback* aCallback,
                         bool aUseWeakRef);
 
   void Shutdown();
 
-  nsresult FindCorrectWindow(nsIDOMWindow* aWindow);
+  nsresult FindCorrectWindow(nsPIDOMWindowInner* aWindow);
 
-  nsCOMPtr<nsPIDOMWindow> mWindow;
+  nsCOMPtr<nsPIDOMWindowOuter> mWindow;
   nsCOMPtr<nsIAudioChannelAgentCallback> mCallback;
 
   nsWeakPtr mWeakCallback;
 
   int32_t mAudioChannelType;
   uint64_t mInnerWindowID;
   bool mIsRegToService;
 };

--- a/dom/audiochannel/AudioChannelService.cpp
+++ b/dom/audiochannel/AudioChannelService.cpp
@@ -98,39 +98,26 @@ void
 NotifyChannelActive(uint64_t aWindowID, AudioChannel aAudioChannel,
                     bool aActive)
 {
   RefPtr<nsRunnable> runnable =
     new NotifyChannelActiveRunnable(aWindowID, aAudioChannel, aActive);
   NS_DispatchToCurrentThread(runnable);
 }
 
-already_AddRefed<nsPIDOMWindow>
-GetTopWindow(nsPIDOMWindow* aWindow)
-{
-  MOZ_ASSERT(aWindow);
-
-  nsCOMPtr<nsPIDOMWindow> topWindow = aWindow->GetScriptableTop();
-  MOZ_ASSERT(topWindow);
-
-  topWindow = topWindow->GetOuterWindow();
-
-  return topWindow.forget();
-}
-
 bool
 IsParentProcess()
 {
   return XRE_GetProcessType() == GeckoProcessType_Default;
 }
 
 class MediaPlaybackRunnable : public nsRunnable
 {
 public:
-  MediaPlaybackRunnable(nsIDOMWindow* aWindow, bool aActive)
+  MediaPlaybackRunnable(nsPIDOMWindowOuter* aWindow, bool aActive)
     : mWindow(aWindow)
     , mActive(aActive)
   {}
 
  NS_IMETHOD Run()
  {
     nsCOMPtr<nsIObserverService> observerService =
       services::GetObserverService();
@@ -141,17 +128,17 @@ public:
         mActive ? MOZ_UTF16("active")
                 : MOZ_UTF16("inactive"));
     }
 
     return NS_OK;
   }
 
 private:
-  nsCOMPtr<nsIDOMWindow> mWindow;
+  nsCOMPtr<nsPIDOMWindowOuter> mWindow;
   bool mActive;
 };
 
 } // anonymous namespace
 
 StaticRefPtr<AudioChannelService> gAudioChannelService;
 
 // Mappings from 'mozaudiochannel' attribute strings to an enumeration.
@@ -362,17 +349,17 @@ AudioChannelService::RegisterTabParent(T
 void
 AudioChannelService::UnregisterTabParent(TabParent* aTabParent)
 {
   MOZ_ASSERT(aTabParent);
   mTabParents.RemoveElement(aTabParent);
 }
 
 void
-AudioChannelService::GetState(nsPIDOMWindow* aWindow, uint32_t aAudioChannel,
+AudioChannelService::GetState(nsPIDOMWindowOuter* aWindow, uint32_t aAudioChannel,
                               float* aVolume, bool* aMuted)
 {
   MOZ_ASSERT(!aWindow || aWindow->IsOuterWindow());
   MOZ_ASSERT(aVolume && aMuted);
   MOZ_ASSERT(aAudioChannel < NUMBER_OF_AUDIO_CHANNELS);
 
 
   if (!aWindow || !aWindow->IsOuterWindow()) {
@@ -380,31 +367,31 @@ AudioChannelService::GetState(nsPIDOMWin
     *aMuted = true;
     return;
   }
 
   *aVolume = 1.0;
   *aMuted = false;
 
   AudioChannelWindow* winData = nullptr;
-  nsCOMPtr<nsPIDOMWindow> window = aWindow;
+  nsCOMPtr<nsPIDOMWindowOuter> window = aWindow;
 
   // The volume must be calculated based on the window hierarchy. Here we go up
   // to the top window and we calculate the volume and the muted flag.
   do {
     winData = GetWindowData(window->WindowID());
     if (winData) {
       *aVolume *= winData->mChannels[aAudioChannel].mVolume;
       *aMuted = *aMuted || winData->mChannels[aAudioChannel].mMuted;
     }
 
     *aVolume *= window->GetAudioVolume();
     *aMuted = *aMuted || window->GetAudioMuted();
 
-    nsCOMPtr<nsPIDOMWindow> win = window->GetScriptableParent();
+    nsCOMPtr<nsPIDOMWindowOuter> win = window->GetScriptableParent();
     if (window == win) {
       break;
     }
 
     window = do_QueryInterface(win);
 
     // If there is no parent, or we are the toplevel we don't continue.
   } while (window && window != aWindow);
@@ -582,22 +569,22 @@ AudioChannelService::Observe(nsISupports
     RemoveChildStatus(childID);
   }
 
   return NS_OK;
 }
 
 void
 AudioChannelService::RefreshAgentsVolumeAndPropagate(AudioChannel aAudioChannel,
-                                                     nsPIDOMWindow* aWindow)
+                                                     nsPIDOMWindowOuter* aWindow)
 {
   MOZ_ASSERT(aWindow);
   MOZ_ASSERT(aWindow->IsOuterWindow());
 
-  nsCOMPtr<nsPIDOMWindow> topWindow = aWindow->GetScriptableTop();
+  nsCOMPtr<nsPIDOMWindowOuter> topWindow = aWindow->GetScriptableTop();
   if (!topWindow) {
     return;
   }
 
   AudioChannelWindow* winData = GetWindowData(topWindow->WindowID());
   if (!winData) {
     return;
   }
@@ -607,22 +594,22 @@ AudioChannelService::RefreshAgentsVolume
                                                    winData->mChannels[(uint32_t)aAudioChannel].mVolume,
                                                    winData->mChannels[(uint32_t)aAudioChannel].mMuted);
   }
 
   RefreshAgentsVolume(aWindow);
 }
 
 void
-AudioChannelService::RefreshAgentsVolume(nsPIDOMWindow* aWindow)
+AudioChannelService::RefreshAgentsVolume(nsPIDOMWindowOuter* aWindow)
 {
   MOZ_ASSERT(aWindow);
   MOZ_ASSERT(aWindow->IsOuterWindow());
 
-  nsCOMPtr<nsPIDOMWindow> topWindow = aWindow->GetScriptableTop();
+  nsCOMPtr<nsPIDOMWindowOuter> topWindow = aWindow->GetScriptableTop();
   if (!topWindow) {
     return;
   }
 
   AudioChannelWindow* winData = GetWindowData(topWindow->WindowID());
   if (!winData) {
     return;
   }
@@ -630,29 +617,29 @@ AudioChannelService::RefreshAgentsVolume
   nsTObserverArray<AudioChannelAgent*>::ForwardIterator
     iter(winData->mAgents);
   while (iter.HasMore()) {
     iter.GetNext()->WindowVolumeChanged();
   }
 }
 
 void
-AudioChannelService::SetWindowAudioCaptured(nsPIDOMWindow* aWindow,
+AudioChannelService::SetWindowAudioCaptured(nsPIDOMWindowOuter* aWindow,
                                             uint64_t aInnerWindowID,
                                             bool aCapture)
 {
   MOZ_ASSERT(NS_IsMainThread());
   MOZ_ASSERT(aWindow);
   MOZ_ASSERT(aWindow->IsOuterWindow());
 
   MOZ_LOG(GetAudioChannelLog(), LogLevel::Debug,
          ("AudioChannelService, SetWindowAudioCaptured, window = %p, "
           "aCapture = %d\n", aWindow, aCapture));
 
-  nsCOMPtr<nsPIDOMWindow> topWindow = aWindow->GetScriptableTop();
+  nsCOMPtr<nsPIDOMWindowOuter> topWindow = aWindow->GetScriptableTop();
   if (!topWindow) {
     return;
   }
 
   AudioChannelWindow* winData = GetWindowData(topWindow->WindowID());
 
   // This can happen, but only during shutdown, because the the outer window
   // changes ScriptableTop, so that its ID is different.
@@ -735,17 +722,17 @@ AudioChannelService::GetDefaultAudioChan
         aString = audioChannel;
         break;
       }
     }
   }
 }
 
 AudioChannelService::AudioChannelWindow*
-AudioChannelService::GetOrCreateWindowData(nsPIDOMWindow* aWindow)
+AudioChannelService::GetOrCreateWindowData(nsPIDOMWindowOuter* aWindow)
 {
   MOZ_ASSERT(NS_IsMainThread());
   MOZ_ASSERT(aWindow);
   MOZ_ASSERT(aWindow->IsOuterWindow());
 
   AudioChannelWindow* winData = GetWindowData(aWindow->WindowID());
   if (!winData) {
     winData = new AudioChannelWindow(aWindow->WindowID());
@@ -766,43 +753,41 @@ AudioChannelService::GetWindowData(uint6
       return next;
     }
   }
 
   return nullptr;
 }
 
 float
-AudioChannelService::GetAudioChannelVolume(nsPIDOMWindow* aWindow,
+AudioChannelService::GetAudioChannelVolume(nsPIDOMWindowOuter* aWindow,
                                            AudioChannel aAudioChannel)
 {
   MOZ_ASSERT(NS_IsMainThread());
   MOZ_ASSERT(aWindow);
   MOZ_ASSERT(aWindow->IsOuterWindow());
 
   AudioChannelWindow* winData = GetOrCreateWindowData(aWindow);
   return winData->mChannels[(uint32_t)aAudioChannel].mVolume;
 }
 
 NS_IMETHODIMP
-AudioChannelService::GetAudioChannelVolume(nsIDOMWindow* aWindow,
+AudioChannelService::GetAudioChannelVolume(mozIDOMWindowProxy* aWindow,
                                            unsigned short aAudioChannel,
                                            float* aVolume)
 {
   MOZ_ASSERT(NS_IsMainThread());
 
-  nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(aWindow);
-  nsCOMPtr<nsPIDOMWindow> window = GetTopWindow(piWindow);
-  MOZ_ASSERT(window->IsOuterWindow());
+  auto* window = nsPIDOMWindowOuter::From(aWindow)->GetScriptableTop();
   *aVolume = GetAudioChannelVolume(window, (AudioChannel)aAudioChannel);
   return NS_OK;
 }
 
 void
-AudioChannelService::SetAudioChannelVolume(nsPIDOMWindow* aWindow,
+AudioChannelService::SetAudioChannelVolume(nsPIDOMWindowOuter* aWindow,
                                            AudioChannel aAudioChannel,
                                            float aVolume)
 {
   MOZ_ASSERT(NS_IsMainThread());
   MOZ_ASSERT(aWindow);
   MOZ_ASSERT(aWindow->IsOuterWindow());
 
   MOZ_LOG(GetAudioChannelLog(), LogLevel::Debug,
@@ -810,57 +795,53 @@ AudioChannelService::SetAudioChannelVolu
           "volume = %f\n", aWindow, aAudioChannel, aVolume));
 
   AudioChannelWindow* winData = GetOrCreateWindowData(aWindow);
   winData->mChannels[(uint32_t)aAudioChannel].mVolume = aVolume;
   RefreshAgentsVolumeAndPropagate(aAudioChannel, aWindow);
 }
 
 NS_IMETHODIMP
-AudioChannelService::SetAudioChannelVolume(nsIDOMWindow* aWindow,
+AudioChannelService::SetAudioChannelVolume(mozIDOMWindowProxy* aWindow,
                                            unsigned short aAudioChannel,
                                            float aVolume)
 {
   MOZ_ASSERT(NS_IsMainThread());
 
-  nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(aWindow);
-  nsCOMPtr<nsPIDOMWindow> window = GetTopWindow(piWindow);
-  MOZ_ASSERT(window->IsOuterWindow());
+  auto* window = nsPIDOMWindowOuter::From(aWindow)->GetScriptableTop();
   SetAudioChannelVolume(window, (AudioChannel)aAudioChannel, aVolume);
   return NS_OK;
 }
 
 bool
-AudioChannelService::GetAudioChannelMuted(nsPIDOMWindow* aWindow,
+AudioChannelService::GetAudioChannelMuted(nsPIDOMWindowOuter* aWindow,
                                           AudioChannel aAudioChannel)
 {
   MOZ_ASSERT(NS_IsMainThread());
   MOZ_ASSERT(aWindow);
   MOZ_ASSERT(aWindow->IsOuterWindow());
 
   AudioChannelWindow* winData = GetOrCreateWindowData(aWindow);
   return winData->mChannels[(uint32_t)aAudioChannel].mMuted;
 }
 
 NS_IMETHODIMP
-AudioChannelService::GetAudioChannelMuted(nsIDOMWindow* aWindow,
+AudioChannelService::GetAudioChannelMuted(mozIDOMWindowProxy* aWindow,
                                           unsigned short aAudioChannel,
                                           bool* aMuted)
 {
   MOZ_ASSERT(NS_IsMainThread());
 
-  nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(aWindow);
-  nsCOMPtr<nsPIDOMWindow> window = GetTopWindow(piWindow);
-  MOZ_ASSERT(window->IsOuterWindow());
+  auto* window = nsPIDOMWindowOuter::From(aWindow)->GetScriptableTop();
   *aMuted = GetAudioChannelMuted(window, (AudioChannel)aAudioChannel);
   return NS_OK;
 }
 
 void
-AudioChannelService::SetAudioChannelMuted(nsPIDOMWindow* aWindow,
+AudioChannelService::SetAudioChannelMuted(nsPIDOMWindowOuter* aWindow,
                                           AudioChannel aAudioChannel,
                                           bool aMuted)
 {
   MOZ_ASSERT(NS_IsMainThread());
   MOZ_ASSERT(aWindow);
   MOZ_ASSERT(aWindow->IsOuterWindow());
 
   MOZ_LOG(GetAudioChannelLog(), LogLevel::Debug,
@@ -873,51 +854,47 @@ AudioChannelService::SetAudioChannelMute
   }
 
   AudioChannelWindow* winData = GetOrCreateWindowData(aWindow);
   winData->mChannels[(uint32_t)aAudioChannel].mMuted = aMuted;
   RefreshAgentsVolumeAndPropagate(aAudioChannel, aWindow);
 }
 
 NS_IMETHODIMP
-AudioChannelService::SetAudioChannelMuted(nsIDOMWindow* aWindow,
+AudioChannelService::SetAudioChannelMuted(mozIDOMWindowProxy* aWindow,
                                           unsigned short aAudioChannel,
                                           bool aMuted)
 {
   MOZ_ASSERT(NS_IsMainThread());
 
-  nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(aWindow);
-  nsCOMPtr<nsPIDOMWindow> window = GetTopWindow(piWindow);
-  MOZ_ASSERT(window->IsOuterWindow());
+  auto* window = nsPIDOMWindowOuter::From(aWindow)->GetScriptableTop();
   SetAudioChannelMuted(window, (AudioChannel)aAudioChannel, aMuted);
   return NS_OK;
 }
 
 bool
-AudioChannelService::IsAudioChannelActive(nsPIDOMWindow* aWindow,
+AudioChannelService::IsAudioChannelActive(nsPIDOMWindowOuter* aWindow,
                                           AudioChannel aAudioChannel)
 {
   MOZ_ASSERT(NS_IsMainThread());
   MOZ_ASSERT(aWindow);
   MOZ_ASSERT(aWindow->IsOuterWindow());
 
   AudioChannelWindow* winData = GetOrCreateWindowData(aWindow);
   return !!winData->mChannels[(uint32_t)aAudioChannel].mNumberOfAgents;
 }
 
 NS_IMETHODIMP
-AudioChannelService::IsAudioChannelActive(nsIDOMWindow* aWindow,
+AudioChannelService::IsAudioChannelActive(mozIDOMWindowProxy* aWindow,
                                           unsigned short aAudioChannel,
                                           bool* aActive)
 {
   MOZ_ASSERT(NS_IsMainThread());
 
-  nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(aWindow);
-  nsCOMPtr<nsPIDOMWindow> window = GetTopWindow(piWindow);
-  MOZ_ASSERT(window->IsOuterWindow());
+  auto* window = nsPIDOMWindowOuter::From(aWindow)->GetScriptableTop();
   *aActive = IsAudioChannelActive(window, (AudioChannel)aAudioChannel);
   return NS_OK;
 }
 void
 AudioChannelService::SetDefaultVolumeControlChannel(int32_t aChannel,
                                                     bool aVisible)
 {
   SetDefaultVolumeControlChannelInternal(aChannel, aVisible,

--- a/dom/audiochannel/AudioChannelService.h
+++ b/dom/audiochannel/AudioChannelService.h
@@ -13,17 +13,17 @@
 #include "nsTObserverArray.h"
 #include "nsTArray.h"
 
 #include "AudioChannelAgent.h"
 #include "nsAttrValue.h"
 #include "mozilla/dom/AudioChannelBinding.h"
 
 class nsIRunnable;
-class nsPIDOMWindow;
+class nsPIDOMWindowOuter;
 struct PRLogModuleInfo;
 
 namespace mozilla {
 namespace dom {
 
 #ifdef MOZ_WIDGET_GONK
 class SpeakerManagerService;
 #endif
@@ -69,31 +69,31 @@ public:
    */
   void RegisterTabParent(TabParent* aTabParent);
   void UnregisterTabParent(TabParent* aTabParent);
 
   /**
    * Return the state to indicate this audioChannel for his window should keep
    * playing/muted.
    */
-  void GetState(nsPIDOMWindow* aWindow, uint32_t aChannel,
+  void GetState(nsPIDOMWindowOuter* aWindow, uint32_t aChannel,
                 float* aVolume, bool* aMuted);
 
   /* Methods for the BrowserElementAudioChannel */
-  float GetAudioChannelVolume(nsPIDOMWindow* aWindow, AudioChannel aChannel);
+  float GetAudioChannelVolume(nsPIDOMWindowOuter* aWindow, AudioChannel aChannel);
 
-  void SetAudioChannelVolume(nsPIDOMWindow* aWindow, AudioChannel aChannel,
+  void SetAudioChannelVolume(nsPIDOMWindowOuter* aWindow, AudioChannel aChannel,
                              float aVolume);
 
-  bool GetAudioChannelMuted(nsPIDOMWindow* aWindow, AudioChannel aChannel);
+  bool GetAudioChannelMuted(nsPIDOMWindowOuter* aWindow, AudioChannel aChannel);
 
-  void SetAudioChannelMuted(nsPIDOMWindow* aWindow, AudioChannel aChannel,
+  void SetAudioChannelMuted(nsPIDOMWindowOuter* aWindow, AudioChannel aChannel,
                             bool aMuted);
 
-  bool IsAudioChannelActive(nsPIDOMWindow* aWindow, AudioChannel aChannel);
+  bool IsAudioChannelActive(nsPIDOMWindowOuter* aWindow, AudioChannel aChannel);
 
   /**
    * Return true if there is a telephony channel active in this process
    * or one of its subprocesses.
    */
   bool TelephonyChannelIsActive();
 
   /**
@@ -108,30 +108,29 @@ public:
    * the default audio channel will be used. Otherwise aChannel is casted to
    * AudioChannel enum.
    */
   virtual void SetDefaultVolumeControlChannel(int32_t aChannel,
                                               bool aVisible);
 
   bool AnyAudioChannelIsActive();
 
-  void RefreshAgentsVolume(nsPIDOMWindow* aWindow);
+  void RefreshAgentsVolume(nsPIDOMWindowOuter* aWindow);
 
   void RefreshAgentsVolumeAndPropagate(AudioChannel aAudioChannel,
-                                       nsPIDOMWindow* aWindow);
+                                       nsPIDOMWindowOuter* aWindow);
 
   // This method needs to know the inner window that wants to capture audio. We
   // group agents per top outer window, but we can have multiple innerWindow per
   // top outerWindow (subiframes, etc.) and we have to identify all the agents
   // just for a particular innerWindow.
-  void SetWindowAudioCaptured(nsPIDOMWindow* aWindow,
+  void SetWindowAudioCaptured(nsPIDOMWindowOuter* aWindow,
                               uint64_t aInnerWindowID,
                               bool aCapture);
 
-
 #ifdef MOZ_WIDGET_GONK
   void RegisterSpeakerManager(SpeakerManagerService* aSpeakerManager)
   {
     if (!mSpeakerManager.Contains(aSpeakerManager)) {
       mSpeakerManager.AppendElement(aSpeakerManager);
     }
   }
 
@@ -199,17 +198,17 @@ private:
     bool mIsAudioCaptured;
     AudioChannelConfig mChannels[NUMBER_OF_AUDIO_CHANNELS];
 
     // Raw pointer because the AudioChannelAgent must unregister itself.
     nsTObserverArray<AudioChannelAgent*> mAgents;
   };
 
   AudioChannelWindow*
-  GetOrCreateWindowData(nsPIDOMWindow* aWindow);
+  GetOrCreateWindowData(nsPIDOMWindowOuter* aWindow);
 
   AudioChannelWindow*
   GetWindowData(uint64_t aWindowID) const;
 
   struct AudioChannelChildStatus final
   {
     explicit AudioChannelChildStatus(uint64_t aChildID)
       : mChildID(aChildID)

--- a/dom/audiochannel/nsIAudioChannelAgent.idl
+++ b/dom/audiochannel/nsIAudioChannelAgent.idl
@@ -1,17 +1,17 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nsISupports.idl"
 
-interface nsIDOMWindow;
+interface mozIDOMWindow;
 
-[uuid(0a451ee0-972e-11e5-a837-0800200c9a66)]
+[uuid(15c05894-408e-4798-b527-a8c32d9c5f8c)]
 interface nsIAudioChannelAgentCallback : nsISupports
 {
   /**
    * Notified when the window volume/mute is changed
    */
   void windowVolumeChanged(in float aVolume, in bool aMuted);
 
   /**
@@ -75,27 +75,27 @@ interface nsIAudioChannelAgent : nsISupp
    * @param callback
    *    1. Once the playable status changes, agent uses this callback function
    *       to notify Gecko component.
    *    2. The callback is allowed to be null. Ex: telephony doesn't need to
    *       listen change of the playable status.
    *    3. The AudioChannelAgent keeps a strong reference to the callback
    *       object.
    */
-  void init(in nsIDOMWindow window, in long channelType,
+  void init(in mozIDOMWindow window, in long channelType,
             in nsIAudioChannelAgentCallback callback);
 
   /**
    * This method is just like init(), except the audio channel agent keeps a
    * weak reference to the callback object.
    *
    * In order for this to work, |callback| must implement
    * nsISupportsWeakReference.
    */
-  void initWithWeakCallback(in nsIDOMWindow window, in long channelType,
+  void initWithWeakCallback(in mozIDOMWindow window, in long channelType,
                             in nsIAudioChannelAgentCallback callback);
 
   /**
    * Notify the agent that we want to start playing.
    * Note: Gecko component SHOULD call this function first then start to
    *          play audio stream only when return value is true.
    *
    * @return

--- a/dom/audiochannel/nsIAudioChannelService.idl
+++ b/dom/audiochannel/nsIAudioChannelService.idl
@@ -1,29 +1,29 @@
 /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nsISupports.idl"
 
-interface nsIDOMWindow;
+interface mozIDOMWindowProxy;
 
-[scriptable, builtinclass, uuid(323e5472-b8f4-4288-b1b9-53c7c54bbbe8)]
+[scriptable, builtinclass, uuid(5cb24dbc-36c7-46a4-9966-ac73141dc795)]
 interface nsIAudioChannelService : nsISupports
 {
-  float getAudioChannelVolume(in nsIDOMWindow window,
+  float getAudioChannelVolume(in mozIDOMWindowProxy window,
                               in unsigned short audioChannel);
 
-  void setAudioChannelVolume(in nsIDOMWindow window,
+  void setAudioChannelVolume(in mozIDOMWindowProxy window,
                              in unsigned short audioChannel,
                              in float volume);
 
-  boolean getAudioChannelMuted(in nsIDOMWindow window,
+  boolean getAudioChannelMuted(in mozIDOMWindowProxy window,
                                in unsigned short audioChannel);
 
-  void setAudioChannelMuted(in nsIDOMWindow window,
+  void setAudioChannelMuted(in mozIDOMWindowProxy window,
                             in unsigned short audioChannel,
                             in boolean muted);
 
-  boolean isAudioChannelActive(in nsIDOMWindow window,
+  boolean isAudioChannelActive(in mozIDOMWindowProxy window,
                                in unsigned short audioChannel);
 };

--- a/dom/base/BarProps.cpp
+++ b/dom/base/BarProps.cpp
@@ -23,20 +23,20 @@ BarProp::BarProp(nsGlobalWindow* aWindow
 {
   MOZ_ASSERT(aWindow->IsInnerWindow());
 }
 
 BarProp::~BarProp()
 {
 }
 
-nsPIDOMWindow*
+nsPIDOMWindowInner*
 BarProp::GetParentObject() const
 {
-  return mDOMWindow;
+  return mDOMWindow->AsInner();
 }
 
 JSObject*
 BarProp::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
 {
   return BarPropBinding::Wrap(aCx, this, aGivenProto);
 }

--- a/dom/base/BarProps.h
+++ b/dom/base/BarProps.h
@@ -33,17 +33,17 @@ class BarProp : public nsISupports,
                 public nsWrapperCache
 {
 public:
   explicit BarProp(nsGlobalWindow *aWindow);
 
   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(BarProp)
 
-  nsPIDOMWindow* GetParentObject() const;
+  nsPIDOMWindowInner* GetParentObject() const;
 
   virtual JSObject*
   WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
 
   virtual bool GetVisible(ErrorResult& aRv) = 0;
   virtual void SetVisible(bool aVisible, ErrorResult& aRv) = 0;
 
 protected:

--- a/dom/base/ChromeNodeList.cpp
+++ b/dom/base/ChromeNodeList.cpp
@@ -8,17 +8,17 @@
 #include "mozilla/dom/ChromeNodeListBinding.h"
 
 using namespace mozilla;
 using namespace mozilla::dom;
 
 already_AddRefed<ChromeNodeList>
 ChromeNodeList::Constructor(const GlobalObject& aGlobal, ErrorResult& aRv)
 {
-  nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(aGlobal.GetAsSupports());
+  nsCOMPtr<nsPIDOMWindowInner> win = do_QueryInterface(aGlobal.GetAsSupports());
   nsIDocument* root = win ? win->GetExtantDoc() : nullptr;
   RefPtr<ChromeNodeList> list = new ChromeNodeList(root);
   return list.forget();
 }
 
 JSObject*
 ChromeNodeList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
 {

--- a/dom/base/Comment.cpp
+++ b/dom/base/Comment.cpp
@@ -60,17 +60,17 @@ Comment::List(FILE* out, int32_t aIndent
   fputs("-->\n", out);
 }
 #endif
 
 /* static */ already_AddRefed<Comment>
 Comment::Constructor(const GlobalObject& aGlobal,
                      const nsAString& aData, ErrorResult& aRv)
 {
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports());
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aGlobal.GetAsSupports());
   if (!window || !window->GetDoc()) {
     aRv.Throw(NS_ERROR_FAILURE);
     return nullptr;
   }
 
   return window->GetDoc()->CreateComment(aData);
 }

--- a/dom/base/Console.cpp
+++ b/dom/base/Console.cpp
@@ -243,17 +243,17 @@ private:
     AssertIsOnMainThread();
 
     // Walk up to our containing page
     WorkerPrivate* wp = mWorkerPrivate;
     while (wp->GetParent()) {
       wp = wp->GetParent();
     }
 
-    nsPIDOMWindow* window = wp->GetWindow();
+    nsPIDOMWindowInner* window = wp->GetWindow();
     if (!window) {
       RunWindowless();
     } else {
       RunWithWindow(window);
     }
 
     PostDispatch();
     return NS_OK;
@@ -292,28 +292,28 @@ private:
     };
 
     RefPtr<WorkerControlRunnable> runnable =
       new ConsoleReleaseRunnable(mWorkerPrivate, this);
     runnable->Dispatch(nullptr);
   }
 
   void
-  RunWithWindow(nsPIDOMWindow* aWindow)
+  RunWithWindow(nsPIDOMWindowInner* aWindow)
   {
     AutoJSAPI jsapi;
     MOZ_ASSERT(aWindow);
 
-    RefPtr<nsGlobalWindow> win = static_cast<nsGlobalWindow*>(aWindow);
+    RefPtr<nsGlobalWindow> win = nsGlobalWindow::Cast(aWindow);
     if (NS_WARN_IF(!jsapi.Init(win))) {
       return;
     }
 
     MOZ_ASSERT(aWindow->IsInnerWindow());
-    nsPIDOMWindow* outerWindow = aWindow->GetOuterWindow();
+    nsPIDOMWindowOuter* outerWindow = aWindow->GetOuterWindow();
     if (NS_WARN_IF(!outerWindow)) {
       return;
     }
 
     RunConsole(jsapi.cx(), outerWindow, aWindow);
   }
 
   void
@@ -342,18 +342,18 @@ private:
     RunConsole(cx, nullptr, nullptr);
   }
 
 protected:
   virtual bool
   PreDispatch(JSContext* aCx) = 0;
 
   virtual void
-  RunConsole(JSContext* aCx, nsPIDOMWindow* aOuterWindow,
-             nsPIDOMWindow* aInnerWindow) = 0;
+  RunConsole(JSContext* aCx, nsPIDOMWindowOuter* aOuterWindow,
+             nsPIDOMWindowInner* aInnerWindow) = 0;
 
   virtual JSObject* CustomReadHandler(JSContext* aCx,
                                       JSStructuredCloneReader* aReader,
                                       uint32_t aTag,
                                       uint32_t aIndex) override
   {
     AssertIsOnMainThread();
 
@@ -479,18 +479,18 @@ private:
       return false;
     }
 
     mCallData->CleanupJSObjects();
     return true;
   }
 
   void
-  RunConsole(JSContext* aCx, nsPIDOMWindow* aOuterWindow,
-             nsPIDOMWindow* aInnerWindow) override
+  RunConsole(JSContext* aCx, nsPIDOMWindowOuter* aOuterWindow,
+             nsPIDOMWindowInner* aInnerWindow) override
   {
     MOZ_ASSERT(NS_IsMainThread());
 
     // The windows have to run in parallel.
     MOZ_ASSERT(!!aOuterWindow == !!aInnerWindow);
 
     if (aOuterWindow) {
       mCallData->SetIDs(aOuterWindow->WindowID(), aInnerWindow->WindowID());
@@ -609,18 +609,18 @@ private:
       return false;
     }
 
     mArguments.Clear();
     return true;
   }
 
   void
-  RunConsole(JSContext* aCx, nsPIDOMWindow* aOuterWindow,
-             nsPIDOMWindow* aInnerWindow) override
+  RunConsole(JSContext* aCx, nsPIDOMWindowOuter* aOuterWindow,
+             nsPIDOMWindowInner* aInnerWindow) override
   {
     ClearException ce(aCx);
 
     // Now we could have the correct window (if we are not window-less).
     mClonedData.mParent = aInnerWindow;
 
     JS::Rooted<JS::Value> argumentsValue(aCx);
     bool ok = Read(aCx, &argumentsValue);
@@ -684,29 +684,29 @@ NS_IMPL_CYCLE_COLLECTING_RELEASE(Console
 
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Console)
   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
   NS_INTERFACE_MAP_ENTRY(nsIObserver)
   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIObserver)
   NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
 NS_INTERFACE_MAP_END
 
-Console::Console(nsPIDOMWindow* aWindow)
+Console::Console(nsPIDOMWindowInner* aWindow)
   : mWindow(aWindow)
   , mOuterID(0)
   , mInnerID(0)
 {
   if (mWindow) {
     MOZ_ASSERT(mWindow->IsInnerWindow());
     mInnerID = mWindow->WindowID();
 
     // Without outerwindow any console message coming from this object will not
     // shown in the devtools webconsole. But this should be fine because
     // probably we are shutting down, or the window is CCed/GCed.
-    nsPIDOMWindow* outerWindow = mWindow->GetOuterWindow();
+    nsPIDOMWindowOuter* outerWindow = mWindow->GetOuterWindow();
     if (outerWindow) {
       mOuterID = outerWindow->WindowID();
     }
   }
 
   if (NS_IsMainThread()) {
     nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
     if (obs) {
@@ -1061,17 +1061,17 @@ Console::Method(JSContext* aCx, MethodNa
     }
   }
 
   // Monotonic timer for 'time' and 'timeEnd'
   if (aMethodName == MethodTime ||
       aMethodName == MethodTimeEnd ||
       aMethodName == MethodTimeStamp) {
     if (mWindow) {
-      nsGlobalWindow *win = static_cast<nsGlobalWindow*>(mWindow.get());
+      nsGlobalWindow *win = nsGlobalWindow::Cast(mWindow);
       MOZ_ASSERT(win);
 
       RefPtr<nsPerformance> performance = win->GetPerformance();
       if (!performance) {
         return;
       }
 
       callData->mMonotonicTimer = performance->Now();

--- a/dom/base/Console.h
+++ b/dom/base/Console.h
@@ -34,20 +34,20 @@ class Console final : public nsIObserver
 {
   ~Console();
 
 public:
   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(Console, nsIObserver)
   NS_DECL_NSIOBSERVER
 
-  explicit Console(nsPIDOMWindow* aWindow);
+  explicit Console(nsPIDOMWindowInner* aWindow);
 
   // WebIDL methods
-  nsISupports* GetParentObject() const
+  nsPIDOMWindowInner* GetParentObject() const
   {
     return mWindow;
   }
 
   virtual JSObject*
   WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
 
   void
@@ -198,17 +198,17 @@ private:
                    const nsTArray<JS::Heap<JS::Value>>& aArguments);
 
   bool
   ShouldIncludeStackTrace(MethodName aMethodName);
 
   JSObject*
   GetOrCreateSandbox(JSContext* aCx, nsIPrincipal* aPrincipal);
 
-  nsCOMPtr<nsPIDOMWindow> mWindow;
+  nsCOMPtr<nsPIDOMWindowInner> mWindow;
   nsCOMPtr<nsIConsoleAPIStorage> mStorage;
   RefPtr<JSObjectHolder> mSandbox;
 
   nsDataHashtable<nsStringHashKey, DOMHighResTimeStamp> mTimerRegistry;
   nsDataHashtable<nsStringHashKey, uint32_t> mCounterRegistry;
 
   uint64_t mOuterID;
   uint64_t mInnerID;

--- a/dom/base/DOMCursor.cpp
+++ b/dom/base/DOMCursor.cpp
@@ -15,17 +15,17 @@ NS_IMPL_CYCLE_COLLECTION_INHERITED(DOMCu
 
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(DOMCursor)
   NS_INTERFACE_MAP_ENTRY(nsIDOMDOMCursor)
 NS_INTERFACE_MAP_END_INHERITING(DOMRequest)
 
 NS_IMPL_ADDREF_INHERITED(DOMCursor, DOMRequest)
 NS_IMPL_RELEASE_INHERITED(DOMCursor, DOMRequest)
 
-DOMCursor::DOMCursor(nsPIDOMWindow* aWindow, nsICursorContinueCallback* aCallback)
+DOMCursor::DOMCursor(nsPIDOMWindowInner* aWindow, nsICursorContinueCallback* aCallback)
   : DOMRequest(aWindow)
   , mCallback(aCallback)
   , mFinished(false)
 {
 }
 
 DOMCursor::DOMCursor(nsIGlobalObject* aGlobal, nsICursorContinueCallback* aCallback)
   : DOMRequest(aGlobal)

--- a/dom/base/DOMCursor.h
+++ b/dom/base/DOMCursor.h
@@ -20,17 +20,17 @@ class DOMCursor : public DOMRequest
                 , public nsIDOMDOMCursor
 {
 public:
   NS_DECL_ISUPPORTS_INHERITED
   NS_DECL_NSIDOMDOMCURSOR
   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DOMCursor,
                                            DOMRequest)
 
-  DOMCursor(nsPIDOMWindow* aWindow, nsICursorContinueCallback *aCallback);
+  DOMCursor(nsPIDOMWindowInner* aWindow, nsICursorContinueCallback *aCallback);
   DOMCursor(nsIGlobalObject* aGlobal, nsICursorContinueCallback *aCallback);
 
   virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
 
   bool Done() const
   {
     return mFinished;
   }

--- a/dom/base/DOMError.cpp
+++ b/dom/base/DOMError.cpp
@@ -16,38 +16,38 @@ NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DO
 NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMError)
 NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMError)
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMError)
   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
   NS_INTERFACE_MAP_ENTRY(DOMError)
   NS_INTERFACE_MAP_ENTRY(nsISupports)
 NS_INTERFACE_MAP_END
 
-DOMError::DOMError(nsPIDOMWindow* aWindow)
+DOMError::DOMError(nsPIDOMWindowInner* aWindow)
   : mWindow(aWindow)
 {
 }
 
-DOMError::DOMError(nsPIDOMWindow* aWindow, nsresult aValue)
+DOMError::DOMError(nsPIDOMWindowInner* aWindow, nsresult aValue)
   : mWindow(aWindow)
 {
   nsCString name, message;
   NS_GetNameAndMessageForDOMNSResult(aValue, name, message);
 
   CopyUTF8toUTF16(name, mName);
   CopyUTF8toUTF16(message, mMessage);
 }
 
-DOMError::DOMError(nsPIDOMWindow* aWindow, const nsAString& aName)
+DOMError::DOMError(nsPIDOMWindowInner* aWindow, const nsAString& aName)
   : mWindow(aWindow)
   , mName(aName)
 {
 }
 
-DOMError::DOMError(nsPIDOMWindow* aWindow, const nsAString& aName,
+DOMError::DOMError(nsPIDOMWindowInner* aWindow, const nsAString& aName,
                    const nsAString& aMessage)
   : mWindow(aWindow)
   , mName(aName)
   , mMessage(aMessage)
 {
 }
 
 DOMError::~DOMError()
@@ -60,17 +60,17 @@ DOMError::WrapObject(JSContext* aCx, JS:
   return DOMErrorBinding::Wrap(aCx, this, aGivenProto);
 }
 
 /* static */ already_AddRefed<DOMError>
 DOMError::Constructor(const GlobalObject& aGlobal,
                       const nsAString& aName, const nsAString& aMessage,
                       ErrorResult& aRv)
 {
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports());
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aGlobal.GetAsSupports());
 
   // Window is null for chrome code.
 
   RefPtr<DOMError> ret = new DOMError(window, aName, aMessage);
   return ret.forget();
 }
 
 } // namespace dom

--- a/dom/base/DOMError.h
+++ b/dom/base/DOMError.h
@@ -6,59 +6,60 @@
 
 #ifndef mozilla_dom_domerror_h__
 #define mozilla_dom_domerror_h__
 
 #include "mozilla/Attributes.h"
 #include "nsWrapperCache.h"
 #include "nsCOMPtr.h"
 #include "nsString.h"
-#include "nsPIDOMWindow.h"
 
 #define DOMERROR_IID \
 { 0x220cb63f, 0xa37d, 0x4ba4, \
  { 0x8e, 0x31, 0xfc, 0xde, 0xec, 0x48, 0xe1, 0x66 } }
 
+class nsPIDOMWindowInner;
+
 namespace mozilla {
 
 class ErrorResult;
 
 namespace dom {
 
 class GlobalObject;
 
 class DOMError : public nsISupports,
                  public nsWrapperCache
 {
-  nsCOMPtr<nsPIDOMWindow> mWindow;
+  nsCOMPtr<nsPIDOMWindowInner> mWindow;
   nsString mName;
   nsString mMessage;
 
 protected:
   virtual ~DOMError();
 
 public:
   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMError)
 
   NS_DECLARE_STATIC_IID_ACCESSOR(DOMERROR_IID)
 
   // aWindow can be null if this DOMError is not associated with a particular
   // window.
 
-  explicit DOMError(nsPIDOMWindow* aWindow);
+  explicit DOMError(nsPIDOMWindowInner* aWindow);
 
-  DOMError(nsPIDOMWindow* aWindow, nsresult aValue);
+  DOMError(nsPIDOMWindowInner* aWindow, nsresult aValue);
 
-  DOMError(nsPIDOMWindow* aWindow, const nsAString& aName);
+  DOMError(nsPIDOMWindowInner* aWindow, const nsAString& aName);
 
-  DOMError(nsPIDOMWindow* aWindow, const nsAString& aName,
+  DOMError(nsPIDOMWindowInner* aWindow, const nsAString& aName,
            const nsAString& aMessage);
 
-  nsPIDOMWindow* GetParentObject() const
+  nsPIDOMWindowInner* GetParentObject() const
   {
     return mWindow;
   }
 
   virtual JSObject*
   WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
 
   static already_AddRefed<DOMError>

--- a/dom/base/DOMParser.cpp
+++ b/dom/base/DOMParser.cpp
@@ -417,17 +417,17 @@ DOMParser::InitInternal(nsISupports* aOw
     // using the base URI and document URI of the window off of which the
     // DOMParser is created, not the window in which parse*() is called.
     // Does that matter?
 
     // Also note that |cx| matches what GetDocumentFromContext() would return,
     // while GetDocumentFromCaller() gives us the window that the DOMParser()
     // call was made on.
 
-    nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aOwner);
+    nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aOwner);
     if (!window) {
       return NS_ERROR_UNEXPECTED;
     }
 
     baseURI = window->GetDocBaseURI();
     documentURI = window->GetDocumentURI();
     if (!documentURI) {
       return NS_ERROR_UNEXPECTED;

--- a/dom/base/DOMRequest.cpp
+++ b/dom/base/DOMRequest.cpp
@@ -18,19 +18,18 @@
 using mozilla::dom::AnyCallback;
 using mozilla::dom::DOMError;
 using mozilla::dom::DOMRequest;
 using mozilla::dom::DOMRequestService;
 using mozilla::dom::DOMCursor;
 using mozilla::dom::Promise;
 using mozilla::dom::AutoJSAPI;
 
-DOMRequest::DOMRequest(nsPIDOMWindow* aWindow)
-  : DOMEventTargetHelper(aWindow->IsInnerWindow() ?
-                           aWindow : aWindow->GetCurrentInnerWindow())
+DOMRequest::DOMRequest(nsPIDOMWindowInner* aWindow)
+  : DOMEventTargetHelper(aWindow)
   , mResult(JS::UndefinedValue())
   , mDone(false)
 {
 }
 
 DOMRequest::DOMRequest(nsIGlobalObject* aGlobal)
   : DOMEventTargetHelper(aGlobal)
   , mResult(JS::UndefinedValue())
@@ -235,34 +234,34 @@ DOMRequest::Then(JSContext* aCx, AnyCall
   JS::Rooted<JSObject*> global(aCx, mPromise->GetWrapper());
   global = js::GetGlobalForObjectCrossCompartment(global);
   mPromise->Then(aCx, global, aResolveCallback, aRejectCallback, aRetval, aRv);
 }
 
 NS_IMPL_ISUPPORTS(DOMRequestService, nsIDOMRequestService)
 
 NS_IMETHODIMP
-DOMRequestService::CreateRequest(nsIDOMWindow* aWindow,
+DOMRequestService::CreateRequest(mozIDOMWindow* aWindow,
                                  nsIDOMDOMRequest** aRequest)
 {
   MOZ_ASSERT(NS_IsMainThread());
-  nsCOMPtr<nsPIDOMWindow> win(do_QueryInterface(aWindow));
-  NS_ENSURE_STATE(win);
+  NS_ENSURE_STATE(aWindow);
+  auto* win = nsPIDOMWindowInner::From(aWindow);
   NS_ADDREF(*aRequest = new DOMRequest(win));
 
   return NS_OK;
 }
 
 NS_IMETHODIMP
-DOMRequestService::CreateCursor(nsIDOMWindow* aWindow,
+DOMRequestService::CreateCursor(mozIDOMWindow* aWindow,
                                 nsICursorContinueCallback* aCallback,
                                 nsIDOMDOMCursor** aCursor)
 {
-  nsCOMPtr<nsPIDOMWindow> win(do_QueryInterface(aWindow));
-  NS_ENSURE_STATE(win);
+  NS_ENSURE_STATE(aWindow);
+  auto* win = nsPIDOMWindowInner::From(aWindow);
   NS_ADDREF(*aCursor = new DOMCursor(win, aCallback));
 
   return NS_OK;
 }
 
 NS_IMETHODIMP
 DOMRequestService::FireSuccess(nsIDOMDOMRequest* aRequest,
                                JS::Handle<JS::Value> aResult)

--- a/dom/base/DOMRequest.h
+++ b/dom/base/DOMRequest.h
@@ -37,17 +37,17 @@ public:
   NS_DECL_ISUPPORTS_INHERITED
   NS_DECL_NSIDOMDOMREQUEST
   NS_REALLY_FORWARD_NSIDOMEVENTTARGET(DOMEventTargetHelper)
 
   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(DOMRequest,
                                                          DOMEventTargetHelper)
 
   // WrapperCache
-  nsPIDOMWindow* GetParentObject() const
+  nsPIDOMWindowInner* GetParentObject() const
   {
     return GetOwner();
   }
 
   virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
 
   // WebIDL Interface
   DOMRequestReadyState ReadyState() const
@@ -80,17 +80,17 @@ public:
        JS::MutableHandle<JS::Value> aRetval,
        mozilla::ErrorResult& aRv);
 
   void FireSuccess(JS::Handle<JS::Value> aResult);
   void FireError(const nsAString& aError);
   void FireError(nsresult aError);
   void FireDetailedError(DOMError* aError);
 
-  explicit DOMRequest(nsPIDOMWindow* aWindow);
+  explicit DOMRequest(nsPIDOMWindowInner* aWindow);
   explicit DOMRequest(nsIGlobalObject* aGlobal);
 
 protected:
   virtual ~DOMRequest();
 
   void FireEvent(const nsAString& aType, bool aBubble, bool aCancelable);
 
   void RootResultVal();

--- a/dom/base/DocumentFragment.cpp
+++ b/dom/base/DocumentFragment.cpp
@@ -111,17 +111,17 @@ DocumentFragment::DumpContent(FILE* out,
   }
 }
 #endif
 
 /* static */ already_AddRefed<DocumentFragment>
 DocumentFragment::Constructor(const GlobalObject& aGlobal,
                               ErrorResult& aRv)
 {
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports());
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aGlobal.GetAsSupports());
   if (!window || !window->GetDoc()) {
     aRv.Throw(NS_ERROR_FAILURE);
     return nullptr;
   }
 
   return window->GetDoc()->CreateDocumentFragment();
 }

--- a/dom/base/Element.cpp
+++ b/dom/base/Element.cpp
@@ -2013,21 +2013,21 @@ bool
 Element::ShouldBlur(nsIContent *aContent)
 {
   // Determine if the current element is focused, if it is not focused
   // then we should not try to blur
   nsIDocument* document = aContent->GetComposedDoc();
   if (!document)
     return false;
 
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(document->GetWindow());
+  nsCOMPtr<nsPIDOMWindowOuter> window = document->GetWindow();
   if (!window)
     return false;
 
-  nsCOMPtr<nsPIDOMWindow> focusedFrame;
+  nsCOMPtr<nsPIDOMWindowOuter> focusedFrame;
   nsIContent* contentToBlur =
     nsFocusManager::GetFocusedDescendant(window, false, getter_AddRefs(focusedFrame));
   if (contentToBlur == aContent)
     return true;
 
   // if focus on this element would get redirected, then check the redirected
   // content as well when blurring.
   return (contentToBlur && nsFocusManager::GetRedirectedFocus(aContent) == contentToBlur);
@@ -3228,17 +3228,16 @@ Element::AttrValueToCORSMode(const nsAtt
   }
 
   return CORSMode(aValue->GetEnumValue());
 }
 
 static const char*
 GetFullScreenError(nsIDocument* aDoc)
 {
-  nsCOMPtr<nsPIDOMWindow> win = aDoc->GetWindow();
   if (aDoc->NodePrincipal()->GetAppStatus() >= nsIPrincipal::APP_STATUS_INSTALLED) {
     // Request is in a web app and in the same origin as the web app.
     // Don't enforce as strict security checks for web apps, the user
     // is supposed to have trust in them. However documents cross-origin
     // to the web app must still confirm to the normal security checks.
     return nullptr;
   }

--- a/dom/base/EventSource.cpp
+++ b/dom/base/EventSource.cpp
@@ -7,16 +7,17 @@
 #include "mozilla/dom/EventSource.h"
 
 #include "mozilla/ArrayUtils.h"
 #include "mozilla/DebugOnly.h"
 #include "mozilla/LoadInfo.h"
 #include "mozilla/DOMEventTargetHelper.h"
 #include "mozilla/dom/EventSourceBinding.h"
 #include "mozilla/dom/MessageEvent.h"
+#include "mozilla/dom/MessageEventBinding.h"
 #include "mozilla/dom/ScriptSettings.h"
 
 #include "nsNetUtil.h"
 #include "nsIAuthPrompt.h"
 #include "nsIAuthPrompt2.h"
 #include "nsIInputStream.h"
 #include "nsIInterfaceRequestorUtils.h"
 #include "nsMimeTypes.h"
@@ -53,17 +54,17 @@ namespace dom {
 #define DEFAULT_BUFFER_SIZE 4096
 
 // Reconnection time related values in milliseconds. The default one is equal
 // to the default value of the pref dom.server-events.default-reconnection-time
 #define MIN_RECONNECTION_TIME_VALUE       500
 #define DEFAULT_RECONNECTION_TIME_VALUE   5000
 #define MAX_RECONNECTION_TIME_VALUE       PR_IntervalToMilliseconds(DELAY_INTERVAL_LIMIT)
 
-EventSource::EventSource(nsPIDOMWindow* aOwnerWindow) :
+EventSource::EventSource(nsPIDOMWindowInner* aOwnerWindow) :
   DOMEventTargetHelper(aOwnerWindow),
   mStatus(PARSE_STATE_OFF),
   mFrozen(false),
   mErrorLoadOnRedirect(false),
   mGoingToDispatchAllMessages(false),
   mWithCredentials(false),
   mWaitingForOnStopRequest(false),
   mLastConvertionResult(NS_OK),
@@ -275,17 +276,17 @@ EventSource::WrapObject(JSContext* aCx, 
 }
 
 /* static */ already_AddRefed<EventSource>
 EventSource::Constructor(const GlobalObject& aGlobal,
                          const nsAString& aURL,
                          const EventSourceInit& aEventSourceInitDict,
                          ErrorResult& aRv)
 {
-  nsCOMPtr<nsPIDOMWindow> ownerWindow =
+  nsCOMPtr<nsPIDOMWindowInner> ownerWindow =
     do_QueryInterface(aGlobal.GetAsSupports());
   if (!ownerWindow) {
     aRv.Throw(NS_ERROR_UNEXPECTED);
     return nullptr;
   }
   MOZ_ASSERT(ownerWindow->IsInnerWindow());
 
   RefPtr<EventSource> eventSource = new EventSource(ownerWindow);
@@ -302,17 +303,17 @@ NS_IMETHODIMP
 EventSource::Observe(nsISupports* aSubject,
                      const char* aTopic,
                      const char16_t* aData)
 {
   if (mReadyState == CLOSED) {
     return NS_OK;
   }
 
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aSubject);
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aSubject);
   if (!GetOwner() || window != GetOwner()) {
     return NS_OK;
   }
 
   DebugOnly<nsresult> rv;
   if (strcmp(aTopic, DOM_WINDOW_FROZEN_TOPIC) == 0) {
     rv = Freeze();
     NS_ASSERTION(NS_SUCCEEDED(rv), "Freeze() failed");
@@ -559,17 +560,17 @@ EventSource::GetInterface(const nsIID & 
 
     nsCOMPtr<nsIPromptFactory> wwatch =
       do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv);
     NS_ENSURE_SUCCESS(rv, rv);
 
     // Get the an auth prompter for our window so that the parenting
     // of the dialogs works as it should when using tabs.
 
-    nsCOMPtr<nsIDOMWindow> window;
+    nsCOMPtr<nsPIDOMWindowOuter> window;
     if (GetOwner()) {
       window = GetOwner()->GetOuterWindow();
     }
 
     return wwatch->GetPrompt(window, aIID, aResult);
   }
 
   return QueryInterface(aIID, aResult);
@@ -1107,23 +1108,18 @@ EventSource::DispatchAllMessageEvents()
     }
 
     // create an event that uses the MessageEvent interface,
     // which does not bubble, is not cancelable, and has no default action
 
     RefPtr<MessageEvent> event =
       NS_NewDOMMessageEvent(this, nullptr, nullptr);
 
-    rv = event->InitMessageEvent(message->mEventName, false, false, jsData,
-                                 mOrigin, message->mLastEventID, nullptr);
-    if (NS_FAILED(rv)) {
-      NS_WARNING("Failed to init the message event!!!");
-      return;
-    }
-
+    event->InitMessageEvent(nullptr, message->mEventName, false, false, jsData,
+                            mOrigin, message->mLastEventID, nullptr, nullptr);
     event->SetTrusted(true);
 
     rv = DispatchDOMEvent(nullptr, static_cast<Event*>(event), nullptr,
                           nullptr);
     if (NS_FAILED(rv)) {
       NS_WARNING("Failed to dispatch the message event!!!");
       return;
     }

--- a/dom/base/EventSource.h
+++ b/dom/base/EventSource.h
@@ -21,17 +21,17 @@
 #include "nsIChannelEventSink.h"
 #include "nsIInterfaceRequestor.h"
 #include "nsITimer.h"
 #include "nsIHttpChannel.h"
 #include "nsWeakReference.h"
 #include "nsDeque.h"
 #include "nsIUnicodeDecoder.h"
 
-class nsPIDOMWindow;
+class nsPIDOMWindowInner;
 
 namespace mozilla {
 
 class ErrorResult;
 
 namespace dom {
 
 struct EventSourceInit;
@@ -39,32 +39,32 @@ struct EventSourceInit;
 class EventSource final : public DOMEventTargetHelper
                         , public nsIObserver
                         , public nsIStreamListener
                         , public nsIChannelEventSink
                         , public nsIInterfaceRequestor
                         , public nsSupportsWeakReference
 {
 public:
-  explicit EventSource(nsPIDOMWindow* aOwnerWindow);
+  explicit EventSource(nsPIDOMWindowInner* aOwnerWindow);
   NS_DECL_ISUPPORTS_INHERITED
   NS_DECL_CYCLE_COLLECTION_SKIPPABLE_SCRIPT_HOLDER_CLASS_INHERITED(
     EventSource, DOMEventTargetHelper)
 
   NS_DECL_NSIOBSERVER
   NS_DECL_NSISTREAMLISTENER
   NS_DECL_NSIREQUESTOBSERVER
   NS_DECL_NSICHANNELEVENTSINK
   NS_DECL_NSIINTERFACEREQUESTOR
 
   // nsWrapperCache
   virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
 
   // WebIDL
-  nsPIDOMWindow*
+  nsPIDOMWindowInner*
   GetParentObject() const
   {
     return GetOwner();
   }
   static already_AddRefed<EventSource>
   Constructor(const GlobalObject& aGlobal, const nsAString& aURL,
               const EventSourceInit& aEventSourceInitDict,
               ErrorResult& aRv);

--- a/dom/base/File.cpp
+++ b/dom/base/File.cpp
@@ -208,17 +208,17 @@ Blob::CreateTemporaryBlob(nsISupports* a
 Blob::Blob(nsISupports* aParent, BlobImpl* aImpl)
   : mImpl(aImpl)
   , mParent(aParent)
 {
   MOZ_ASSERT(mImpl);
 
 #ifdef DEBUG
   {
-    nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(aParent);
+    nsCOMPtr<nsPIDOMWindowInner> win = do_QueryInterface(aParent);
     if (win) {
       MOZ_ASSERT(win->IsInnerWindow());
     }
   }
 #endif
 }
 
 bool
@@ -597,17 +597,17 @@ File::Constructor(const GlobalObject& aG
                   ErrorResult& aRv)
 {
   MOZ_ASSERT(NS_IsMainThread());
   if (!nsContentUtils::IsCallerChrome()) {
     aRv.Throw(NS_ERROR_FAILURE);
     return nullptr;
   }
 
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports());
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aGlobal.GetAsSupports());
 
   RefPtr<MultipartBlobImpl> impl = new MultipartBlobImpl(EmptyString());
   impl->InitializeChromeFile(window, aData, aBag, true, aRv);
   if (aRv.Failed()) {
     return nullptr;
   }
   MOZ_ASSERT(impl->IsFile());
 
@@ -625,17 +625,17 @@ File::Constructor(const GlobalObject& aG
                   const ChromeFilePropertyBag& aBag,
                   ErrorResult& aRv)
 {
   if (!nsContentUtils::ThreadsafeIsCallerChrome()) {
     aRv.Throw(NS_ERROR_FAILURE);
     return nullptr;
   }
 
-  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aGlobal.GetAsSupports());
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aGlobal.GetAsSupports());
 
   RefPtr<MultipartBlobImpl> impl = new MultipartBlobImpl(EmptyString());
   impl->InitializeChromeFile(window, aData, aBag, aRv);
   if (aRv.Failed()) {
     return nullptr;
   }
   MOZ_ASSERT(impl->IsFile());

--- a/dom/base/FragmentOrElement.cpp
+++ b/dom/base/FragmentOrElement.cpp
@@ -842,17 +842,17 @@ nsIContent::PreHandleEvent(EventChainPre
         break;
     }
 
     if (stopEvent) {
       // If we do stop propagation, we still want to propagate
       // the event to chrome (nsPIDOMWindow::GetParentTarget()).
       // The load event is special in that we don't ever propagate it
       // to chrome.
-      nsCOMPtr<nsPIDOMWindow> win = OwnerDoc()->GetWindow();
+      nsCOMPtr<nsPIDOMWindowOuter> win = OwnerDoc()->GetWindow();
       EventTarget* parentTarget = win && aVisitor.mEvent->mMessage != eLoad
         ? win->GetParentTarget() : nullptr;
 
       aVisitor.mParentTarget = parentTarget;
       return NS_OK;
     }
 
     if (!aVisitor.mDestInsertionPoints.IsEmpty()) {

--- a/dom/base/MultipartBlobImpl.cpp
+++ b/dom/base/MultipartBlobImpl.cpp
@@ -353,17 +353,17 @@ MultipartBlobImpl::InitializeChromeFile(
   blobSet.AppendBlobImpl(aBlob.Impl());
   mBlobImpls = blobSet.GetBlobImpls();
 
   SetLengthAndModifiedDate(aRv);
   NS_WARN_IF(aRv.Failed());
 }
 
 void
-MultipartBlobImpl::InitializeChromeFile(nsPIDOMWindow* aWindow,
+MultipartBlobImpl::InitializeChromeFile(nsPIDOMWindowInner* aWindow,
                                         nsIFile* aFile,
                                         const ChromeFilePropertyBag& aBag,
                                         bool aIsFromNsIFile,
                                         ErrorResult& aRv)
 {
   NS_ASSERTION(!mImmutable, "Something went wrong ...");
   if (mImmutable) {
     aRv.Throw(NS_ERROR_UNEXPECTED);
@@ -425,17 +425,17 @@ MultipartBlobImpl::InitializeChromeFile(
   blobSet.AppendBlobImpl(static_cast<File*>(blob.get())->Impl());
   mBlobImpls = blobSet.GetBlobImpls();
 
   SetLengthAndModifiedDate(aRv);
   NS_WARN_IF(aRv.Failed());
 }
 
 void
-MultipartBlobImpl::InitializeChromeFile(nsPIDOMWindow* aWindow,
+MultipartBlobImpl::InitializeChromeFile(nsPIDOMWindowInner* aWindow,
                                         const nsAString& aData,
                                         const ChromeFilePropertyBag& aBag,
                                         ErrorResult& aRv)
 {
   nsCOMPtr<nsIFile> file;
   aRv = NS_NewLocalFile(aData, false, getter_AddRefs(file));
   if (NS_WARN_IF(aRv.Failed())) {
     return;

--- a/dom/base/MultipartBlobImpl.h
+++ b/dom/base/MultipartBlobImpl.h
@@ -59,22 +59,22 @@ public:
        const nsAString& aContentType,
        bool aNativeEOL,
        ErrorResult& aRv);
 
   void InitializeChromeFile(Blob& aData,
                             const ChromeFilePropertyBag& aBag,
                             ErrorResult& aRv);
 
-  void InitializeChromeFile(nsPIDOMWindow* aWindow,
+  void InitializeChromeFile(nsPIDOMWindowInner* aWindow,
                             const nsAString& aData,
                             const ChromeFilePropertyBag& aBag,
                             ErrorResult& aRv);
 
-  void InitializeChromeFile(nsPIDOMWindow* aWindow,
+  void InitializeChromeFile(nsPIDOMWindowInner* aWindow,
                             nsIFile* aData,
                             const ChromeFilePropertyBag& aBag,
                             bool aIsFromNsIFile,
                             ErrorResult& aRv);
 
   virtual already_AddRefed<BlobImpl>
   CreateSlice(uint64_t aStart, uint64_t aLength,
               const nsAString& aContentType,

--- a/dom/base/Navigator.cpp
+++ b/dom/base/Navigator.cpp
@@ -146,17 +146,17 @@ Navigator::Init()
   Preferences::AddBoolVarCache(&sVibratorEnabled,
                                "dom.vibrator.enabled", true);
   Preferences::AddUintVarCache(&sMaxVibrateMS,
                                "dom.vibrator.max_vibrate_ms", 10000);
   Preferences::AddUintVarCache(&sMaxVibrateListLen,
                                "dom.vibrator.max_vibrate_list_len", 128);
 }
 
-Navigator::Navigator(nsPIDOMWindow* aWindow)
+Navigator::Navigator(nsPIDOMWindowInner* aWindow)
   : mWindow(aWindow)
 {
   MOZ_ASSERT(aWindow->IsInnerWindow(), "Navigator must get an inner window!");
 }
 
 Navigator::~Navigator()
 {
   Invalidate();
@@ -368,17 +368,17 @@ Navigator::Invalidate()
 //*****************************************************************************
 //    Navigator::nsIDOMNavigator
 //*****************************************************************************
 
 NS_IMETHODIMP
 Navigator::GetUserAgent(nsAString& aUserAgent)
 {
   nsCOMPtr<nsIURI> codebaseURI;
-  nsCOMPtr<nsPIDOMWindow> window;
+  nsCOMPtr<nsPIDOMWindowInner> window;
 
   if (mWindow) {
     window = mWindow;
     nsIDocShell* docshell = window->GetDocShell();
     nsString customUserAgent;
     if (docshell) {
       docshell->GetCustomUserAgent(customUserAgent);
 
@@ -753,17 +753,17 @@ Navigator::RefreshMIMEArray()
   }
 }
 
 namespace {
 
 class VibrateWindowListener : public nsIDOMEventListener
 {
 public:
-  VibrateWindowListener(nsIDOMWindow* aWindow, nsIDocument* aDocument)
+  VibrateWindowListener(nsPIDOMWindowInner* aWindow, nsIDocument* aDocument)
   {
     mWindow = do_GetWeakReference(aWindow);
     mDocument = do_GetWeakReference(aDocument);
 
     NS_NAMED_LITERAL_STRING(visibilitychange, "visibilitychange");
     aDocument->AddSystemEventListener(visibilitychange,
                                       this, /* listener */
                                       true, /* use capture */
@@ -806,17 +806,17 @@ VibrateWindowListener::HandleEvent(nsIDO
   nsCOMPtr<nsIDocument> doc =
     do_QueryInterface(aEvent->InternalDOMEvent()->GetTarget());
 
   if (!MayVibrate(doc)) {
     // It's important that we call CancelVibrate(), not Vibrate() with an
     // empty list, because Vibrate() will fail if we're no longer focused, but
     // CancelVibrate() will succeed, so long as nobody else has started a new
     // vibration pattern.
-    nsCOMPtr<nsIDOMWindow> window = do_QueryReferent(mWindow);
+    nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(mWindow);
     hal::CancelVibrate(window);
     RemoveListener();
     gVibrateWindowListener = nullptr;
     // Careful: The line above might have deleted |this|!
   }
 
   return NS_OK;
 }
@@ -922,17 +922,17 @@ Navigator::Vibrate(const nsTArray<uint32
 
 //*****************************************************************************
 //  Pointer Events interface
 //*****************************************************************************
 
 uint32_t
 Navigator::MaxTouchPoints()
 {
-  nsCOMPtr<nsIWidget> widget = widget::WidgetUtils::DOMWindowToWidget(mWindow);
+  nsCOMPtr<nsIWidget> widget = widget::WidgetUtils::DOMWindowToWidget(mWindow->GetOuterWindow());
 
   NS_ENSURE_TRUE(widget, 0);
   return widget->GetMaxTouchPoints();
 }
 
 //*****************************************************************************
 //    Navigator::nsIDOMClientInformation
 //*****************************************************************************
@@ -1105,17 +1105,17 @@ Navigator::GetGeolocation(ErrorResult& a
   }
 
   if (!mWindow || !mWindow->GetOuterWindow() || !mWindow->GetDocShell()) {
     aRv.Throw(NS_ERROR_FAILURE);
     return nullptr;
   }
 
   mGeolocation = new Geolocation();
-  if (NS_FAILED(mGeolocation->Init(mWindow->GetOuterWindow()))) {
+  if (NS_FAILED(mGeolocation->Init(mWindow))) {
     mGeolocation = nullptr;
     aRv.Throw(NS_ERROR_FAILURE);
     return nullptr;
   }
 
   return mGeolocation;
 }
 
@@ -1504,17 +1504,17 @@ Navigator::GetDeprecatedBattery(ErrorRes
     mBatteryManager = new battery::BatteryManager(mWindow);
     mBatteryManager->Init();
   }
 
   return mBatteryManager;
 }
 
 /* static */ already_AddRefed<Promise>
-Navigator::GetDataStores(nsPIDOMWindow* aWindow,
+Navigator::GetDataStores(nsPIDOMWindowInner* aWindow,
                          const nsAString& aName,
                          const nsAString& aOwner,
                          ErrorResult& aRv)
 {
   if (!aWindow || !aWindow->GetDocShell()) {
     aRv.Throw(NS_ERROR_UNEXPECTED);
     return nullptr;
   }
@@ -1918,17 +1918,17 @@ void
 Navigator::GetGamepads(nsTArray<RefPtr<Gamepad> >& aGamepads,
                        ErrorResult& aRv)
 {
   if (!mWindow) {
     aRv.Throw(NS_ERROR_UNEXPECTED);
     return;
   }
   NS_ENSURE_TRUE_VOID(mWindow->GetDocShell());
-  nsGlobalWindow* win = static_cast<nsGlobalWindow*>(mWindow.get());
+  nsGlobalWindow* win = nsGlobalWindow::Cast(mWindow);
   win->SetHasGamepadEventListener(true);
   win->GetGamepads(aGamepads);
 }
 #endif
 
 already_AddRefed<Promise>
 Navigator::GetVRDevices(ErrorResult& aRv)
 {
@@ -1954,17 +1954,17 @@ Navigator::GetVRDevices(ErrorResult& aRv
   return p.forget();
 }
 
 void
 Navigator::NotifyVRDevicesUpdated()
 {
   // Synchronize the VR devices and resolve the promises in
   // mVRGetDevicesPromises
-  nsGlobalWindow* win = static_cast<nsGlobalWindow*>(mWindow.get());
+  nsGlobalWindow* win = nsGlobalWindow::Cast(mWindow);
 
   nsTArray<RefPtr<VRDevice>> vrDevs;
   if (win->UpdateVRDevices(vrDevs)) {
     for (auto p: mVRGetDevicesPromises) {
       p->MaybeResolve(vrDevs);
     }
   } else {
     for (auto p: mVRGetDevicesPromises) {
@@ -2168,17 +2168,17 @@ Navigator::SizeOfIncludingThis(mozilla::
   // TODO: add SizeOfIncludingThis() to nsPluginArray, bug 674114.
   // TODO: add SizeOfIncludingThis() to Geolocation, bug 674115.
   // TODO: add SizeOfIncludingThis() to DesktopNotificationCenter, bug 674116.
 
   return n;
 }
 
 void
-Navigator::SetWindow(nsPIDOMWindow *aInnerWindow)
+Navigator::SetWindow(nsPIDOMWindowInner *aInnerWindow)
 {
   NS_ASSERTION(aInnerWindow->IsInnerWindow(),
                "Navigator must get an inner window!");
   mWindow = aInnerWindow;
 }
 
 void
 Navigator::OnNavigation()
@@ -2202,17 +2202,17 @@ Navigator::OnNavigation()
 bool
 Navigator::CheckPermission(const char* type)
 {
   return CheckPermission(mWindow, type);
 }
 
 /* static */
 bool
-Navigator::CheckPermission(nsPIDOMWindow* aWindow, const char* aType)
+Navigator::CheckPermission(nsPIDOMWindowInner* aWindow, const char* aType)
 {
   if (!aWindow) {
     return false;
   }
 
   nsCOMPtr<nsIPermissionManager> permMgr =
     services::GetPermissionManager();
   NS_ENSURE_TRUE(permMgr, false);
@@ -2454,17 +2454,17 @@ Navigator::HasWakeLockSupport(JSContext*
   // No service means no wake lock support
   return !!pmService;
 }
 
 /* static */
 bool
 Navigator::HasCameraSupport(JSContext* /* unused */, JSObject* aGlobal)
 {
-  nsCOMPtr<nsPIDOMWindow> win = GetWindowFromGlobal(aGlobal);
+  nsCOMPtr<nsPIDOMWindowInner> win = GetWindowFromGlobal(aGlobal);
   return win && nsDOMCameraManager::CheckPermission(win);
 }
 
 /* static */
 bool
 Navigator::HasWifiManagerSupport(JSContext* /* unused */,
                                  JSObject* aGlobal)
 {
@@ -2483,17 +2483,17 @@ Navigator::HasWifiManagerSupport(JSConte
   return nsIPermissionManager::ALLOW_ACTION == permission;
 }
 
 #ifdef MOZ_NFC
 /* static */
 bool
 Navigator::HasNFCSupport(JSContext* /* unused */, JSObject* aGlobal)
 {
-  nsCOMPtr<nsPIDOMWindow> win = GetWindowFromGlobal(aGlobal);
+  nsCOMPtr<nsPIDOMWindowInner> win = GetWindowFromGlobal(aGlobal);
 
   // Do not support NFC if NFC content helper does not exist.
   nsCOMPtr<nsISupports> contentHelper = do_GetService("@mozilla.org/nfc/content-helper;1");
   return !!contentHelper;
 }
 #endif // MOZ_NFC
 
 #ifdef MOZ_MEDIA_NAVIGATOR
@@ -2559,17 +2559,17 @@ Navigator::HasDataStoreSupport(JSContext
       new HasDataStoreSupportRunnable(workerPrivate);
     return runnable->Dispatch() && runnable->mResult;
   }
 
   workers::AssertIsOnMainThread();
 
   JS::Rooted<JSObject*> global(aCx, aGlobal);
 
-  nsCOMPtr<nsPIDOMWindow> win = GetWindowFromGlobal(global);
+  nsCOMPtr<nsPIDOMWindowInner> win = GetWindowFromGlobal(global);
   if (!win) {
     return false;
   }
 
   nsIDocument* doc = win->GetExtantDoc();
   if (!doc || !doc->NodePrincipal()) {
     return false;
   }
@@ -2577,17 +2577,17 @@ Navigator::HasDataStoreSupport(JSContext
   return HasDataStoreSupport(doc->NodePrincipal());
 }
 
 #ifdef MOZ_B2G
 /* static */
 bool
 Navigator::HasMobileIdSupport(JSContext* aCx, JSObject* aGlobal)
 {
-  nsCOMPtr<nsPIDOMWindow> win = GetWindowFromGlobal(aGlobal);
+  nsCOMPtr<nsPIDOMWindowInner> win = GetWindowFromGlobal(aGlobal);
   if (!win) {
     return false;
   }
 
   nsIDocument* doc = win->GetExtantDoc();
   if (!doc) {
     return false;
   }
@@ -2605,60 +2605,61 @@ Navigator::HasMobileIdSupport(JSContext*
 #endif
 
 /* static */
 bool
 Navigator::HasPresentationSupport(JSContext* aCx, JSObject* aGlobal)
 {
   JS::Rooted<JSObject*> global(aCx, aGlobal);
 
-  nsCOMPtr<nsPIDOMWindow> win = GetWindowFromGlobal(global);
-  if (NS_WARN_IF(!win)) {
+  nsCOMPtr<nsPIDOMWindowInner> inner = GetWindowFromGlobal(global);
+  if (NS_WARN_IF(!inner)) {
     return false;
   }
 
   // Grant access if it has the permission.
-  if (CheckPermission(win, "presentation")) {
+  if (CheckPermission(inner, "presentation")) {
     return true;
   }
 
   // Grant access to browser receiving pages and their same-origin iframes. (App
   // pages should be controlled by "presentation" permission in app manifests.)
   mozilla::dom::ContentChild* cc =
     mozilla::dom::ContentChild::GetSingleton();
   if (!cc || !cc->IsForBrowser()) {
     return false;
   }
 
-  win = win->GetOuterWindow();
-  nsCOMPtr<nsPIDOMWindow> top = win->GetTop();
+  nsCOMPtr<nsPIDOMWindowOuter> win = inner->GetOuterWindow();
+  nsCOMPtr<nsPIDOMWindowOuter> top = win->GetTop();
   nsCOMPtr<nsIScriptObjectPrincipal> sop = do_QueryInterface(win);
   nsCOMPtr<nsIScriptObjectPrincipal> topSop = do_QueryInterface(top);
   if (!sop || !topSop) {
     return false;
   }
 
   nsIPrincipal* principal = sop->GetPrincipal();
   nsIPrincipal* topPrincipal = topSop->GetPrincipal();
   if (!principal || !topPrincipal || !principal->Subsumes(topPrincipal)) {
     return false;
   }
 
-  if (!(top = top->GetCurrentInnerWindow())) {
+  nsCOMPtr<nsPIDOMWindowInner> topInner;
+  if (!(topInner = top->GetCurrentInnerWindow())) {
     return false;
   }
 
   nsCOMPtr<nsIPresentationService> presentationService =
     do_GetService(PRESENTATION_SERVICE_CONTRACTID);
   if (NS_WARN_IF(!presentationService)) {
     return false;
   }
 
   nsAutoString sessionId;
-  presentationService->GetExistentSessionIdAtLaunch(top->WindowID(), sessionId);
+  presentationService->GetExistentSessionIdAtLaunch(topInner->WindowID(), sessionId);
   return !sessionId.IsEmpty();
 }
 
 /* static */
 bool
 Navigator::IsE10sEnabled(JSContext* aCx, JSObject* aGlobal)
 {
   return XRE_IsContentProcess();
@@ -2667,20 +2668,20 @@ Navigator::IsE10sEnabled(JSContext* aCx,
 bool
 Navigator::MozE10sEnabled()
 {
   // This will only be called if IsE10sEnabled() is true.
   return true;
 }
 
 /* static */
-already_AddRefed<nsPIDOMWindow>
+already_AddRefed<nsPIDOMWindowInner>
 Navigator::GetWindowFromGlobal(JSObject* aGlobal)
 {
-  nsCOMPtr<nsPIDOMWindow> win =
+  nsCOMPtr<nsPIDOMWindowInner> win =
     do_QueryInterface(nsJSUtils::GetStaticScriptGlobal(aGlobal));
   MOZ_ASSERT(!win || win->IsInnerWindow());
   return win.forget();
 }
 
 nsresult
 Navigator::GetPlatform(nsAString& aPlatform, bool aUsePrefOverriddenValue)
 {
@@ -2783,17 +2784,17 @@ Navigator::AppName(nsAString& aAppName, 
 
 void
 Navigator::ClearUserAgentCache()
 {
   NavigatorBinding::ClearCachedUserAgentValue(this);
 }
 
 nsresult
-Navigator::GetUserAgent(nsPIDOMWindow* aWindow, nsIURI* aURI,
+Navigator::GetUserAgent(nsPIDOMWindowInner* aWindow, nsIURI* aURI,
                         bool aIsCallerChrome,
                         nsAString& aUserAgent)
 {
   MOZ_ASSERT(NS_IsMainThread());
 
   if (!aIsCallerChrome) {
     const nsAdoptingString& override =
       mozilla::Preferences::GetString("general.useragent.override");

--- a/dom/base/Navigator.h
+++ b/dom/base/Navigator.h
@@ -20,17 +20,17 @@
 #include "nsTArray.h"
 #include "nsWeakPtr.h"
 #ifdef MOZ_EME
 #include "mozilla/dom/MediaKeySystemAccessManager.h"
 #endif
 
 class nsPluginArray;
 class nsMimeTypeArray;
-class nsPIDOMWindow;
+class nsPIDOMWindowInner;
 class nsIDOMNavigatorSystemMessages;
 class nsDOMCameraManager;
 class nsDOMDeviceStorage;
 class nsIPrincipal;
 class nsIURI;
 
 namespace mozilla {
 namespace dom {
@@ -111,40 +111,40 @@ class AudioChannelManager;
 #endif
 } // namespace system
 
 class Navigator final : public nsIDOMNavigator
                       , public nsIMozNavigatorNetwork
                       , public nsWrapperCache
 {
 public:
-  explicit Navigator(nsPIDOMWindow* aInnerWindow);
+  explicit Navigator(nsPIDOMWindowInner* aInnerWindow);
 
   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(Navigator,
                                                          nsIDOMNavigator)
   NS_DECL_NSIDOMNAVIGATOR
   NS_DECL_NSIMOZNAVIGATORNETWORK
 
   static void Init();
 
   void Invalidate();
-  nsPIDOMWindow *GetWindow() const
+  nsPIDOMWindowInner *GetWindow() const
   {
     return mWindow;
   }
 
   void RefreshMIMEArray();
 
   size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
 
   /**
    * For use during document.write where our inner window changes.
    */
-  void SetWindow(nsPIDOMWindow *aInnerWindow);
+  void SetWindow(nsPIDOMWindowInner *aInnerWindow);
 
   /**
    * Called when the inner window navigates to a new page.
    */
   void OnNavigation();
 
   // Helper to initialize mMessagesManager.
   nsresult EnsureMessagesManager();
@@ -159,30 +159,30 @@ public:
   nsMimeTypeArray* GetMimeTypes(ErrorResult& aRv);
   nsPluginArray* GetPlugins(ErrorResult& aRv);
   Permissions* GetPermissions(ErrorResult& aRv);
   // The XPCOM GetDoNotTrack is ok
   Geolocation* GetGeolocation(ErrorResult& aRv);
   Promise* GetBattery(ErrorResult& aRv);
   battery::BatteryManager* GetDeprecatedBattery(ErrorResult& aRv);
 
-  static already_AddRefed<Promise> GetDataStores(nsPIDOMWindow* aWindow,
+  static already_AddRefed<Promise> GetDataStores(nsPIDOMWindowInner* aWindow,
                                                  const nsAString& aName,
                                                  const nsAString& aOwner,
                                                  ErrorResult& aRv);
 
   static void AppName(nsAString& aAppName, bool aUsePrefOverriddenValue);
 
   static nsresult GetPlatform(nsAString& aPlatform,
                               bool aUsePrefOverriddenValue);
 
   static nsresult GetAppVersion(nsAString& aAppVersion,
                                 bool aUsePrefOverriddenValue);
 
-  static nsresult GetUserAgent(nsPIDOMWindow* aWindow,
+  static nsresult GetUserAgent(nsPIDOMWindowInner* aWindow,
                                nsIURI* aURI,
                                bool aIsCallerChrome,
                                nsAString& aUserAgent);
 
   // Clears the user agent cache by calling:
   // NavigatorBinding::ClearCachedUserAgentValue(this);
   void ClearUserAgentCache();
 
@@ -338,41 +338,41 @@ public:
 #ifdef MOZ_B2G
   static bool HasMobileIdSupport(JSContext* aCx, JSObject* aGlobal);
 #endif
 
   static bool HasPresentationSupport(JSContext* aCx, JSObject* aGlobal);
 
   static bool IsE10sEnabled(JSContext* aCx, JSObject* aGlobal);
 
-  nsPIDOMWindow* GetParentObject() const
+  nsPIDOMWindowInner* GetParentObject() const
   {
     return GetWindow();
   }
 
   virtual JSObject* WrapObject(JSContext* cx, JS::Handle<JSObject*> aGivenProto) override;
 
   // GetWindowFromGlobal returns the inner window for this global, if
   // any, else null.
-  static already_AddRefed<nsPIDOMWindow> GetWindowFromGlobal(JSObject* aGlobal);
+  static already_AddRefed<nsPIDOMWindowInner> GetWindowFromGlobal(JSObject* aGlobal);
 
 #ifdef MOZ_EME
   already_AddRefed<Promise>
   RequestMediaKeySystemAccess(const nsAString& aKeySystem,
                               const Sequence<MediaKeySystemConfiguration>& aConfig,
                               ErrorResult& aRv);
 private:
   RefPtr<MediaKeySystemAccessManager> mMediaKeySystemAccessManager;
 #endif
 
 private:
   virtual ~Navigator();
 
   bool CheckPermission(const char* type);
-  static bool CheckPermission(nsPIDOMWindow* aWindow, const char* aType);
+  static bool CheckPermission(nsPIDOMWindowInner* aWindow, const char* aType);
 
   already_AddRefed<nsDOMDeviceStorage> FindDeviceStorage(const nsAString& aName,
                                                          const nsAString& aType);
 
   RefPtr<nsMimeTypeArray> mMimeTypes;
   RefPtr<nsPluginArray> mPlugins;
   RefPtr<Permissions> mPermissions;
   RefPtr<Geolocation> mGeolocation;
@@ -401,17 +401,17 @@ private:
   RefPtr<system::AudioChannelManager> mAudioChannelManager;
 #endif
   RefPtr<nsDOMCameraManager> mCameraManager;
   RefPtr<MediaDevices> mMediaDevices;
   nsCOMPtr<nsIDOMNavigatorSystemMessages> mMessagesManager;
   nsTArray<nsWeakPtr> mDeviceStorageStores;
   RefPtr<time::TimeManager> mTimeManager;
   RefPtr<ServiceWorkerContainer> mServiceWorkerContainer;
-  nsCOMPtr<nsPIDOMWindow> mWindow;
+  nsCOMPtr<nsPIDOMWindowInner> mWindow;
   RefPtr<DeviceStorageAreaListener> mDeviceStorageAreaListener;
   RefPtr<Presentation> mPresentation;
 
   // Hashtable for saving cached objects DoResolve created, so we don't create
   // the object twice if asked for it twice, whether due to use of "delete" or
   // due to Xrays.  We could probably use a nsJSThingHashtable here, but then
   // we'd need to figure out exactly how to trace that, and that seems to be
   // rocket science.  :(

--- a/dom/base/PerformanceObserver.cpp
+++ b/dom/base/PerformanceObserver.cpp
@@ -41,17 +41,17 @@ NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCA
 
 NS_IMPL_CYCLE_COLLECTING_ADDR

author	Kyle Huey <khuey@kylehuey.com>
	Sat, 30 Jan 2016 09:05:36 -0800
changeset 282426	e22b3043887ed36bf2c634c2924a7c8d39d226b1
parent 282425	7a5baf370ad97f1e76c66f6f0c7a6c1806173bfc
child 282427	998d61de14ee09ad3d63c9d3922269f9b996b791
push id	29959
push user	philringnalda@gmail.com
push date	Sun, 31 Jan 2016 01:09:00 +0000
treeherder	mozilla-central@b2a3dc4b161f [default view] [failures only]
perfherder	[talos] [build metrics] [platform microbench] (compared to previous push)
reviewers	mrbkap, smaug
bugs	1241764
milestone	47.0a1
first release with	nightly linux32 b2a3dc4b161f / 47.0a1 / 20160131030347 / files nightly linux64 b2a3dc4b161f / 47.0a1 / 20160131030347 / files nightly mac b2a3dc4b161f / 47.0a1 / 20160131030347 / files nightly win32 b2a3dc4b161f / 47.0a1 / 20160131030347 / files nightly win64 b2a3dc4b161f / 47.0a1 / 20160131030347 / files
last release without	nightly linux32 54eea211e234 / 47.0a1 / 20160130030240 / files nightly linux64 54eea211e234 / 47.0a1 / 20160130030240 / files nightly mac 54eea211e234 / 47.0a1 / 20160130030240 / files nightly win32 54eea211e234 / 47.0a1 / 20160130030240 / files nightly win64 54eea211e234 / 47.0a1 / 20160130030240 / files