Bug 1047603 - Make TabParent::AnswerCreateWindow force the initial browser to be remote in a new window. r=smaug.

--HG--
extra : rebase_source : 48bb98774b35daa2dda0edf017734c645e2ea32e

browser/base/content/browser.js

@@ -937,8 +937,6 @@ var gBrowserInit = {
       Cc["@mozilla.org/eventlistenerservice;1"]
         .getService(Ci.nsIEventListenerService)
         .addSystemEventListener(gBrowser, "click", contentAreaClick, true);
-    } else {
-      gBrowser.updateBrowserRemoteness(gBrowser.selectedBrowser, true);
     }
 
     // hook up UI through progress listener
@@ -4095,6 +4093,13 @@ var XULBrowserWindow = {
     // unsupported
   },
 
+  forceInitialBrowserRemote: function() {
+    let initBrowser =
+      document.getAnonymousElementByAttribute(gBrowser, "anonid", "initialBrowser");
+    gBrowser.updateBrowserRemoteness(initBrowser, true);
+    return initBrowser.frameLoader.tabParent;
+  },
+
   setDefaultStatus: function (status) {
     this.defaultStatus = status;
     this.updateStatusField();

docshell/base/nsDocShell.cpp

@@ -13754,19 +13754,6 @@ nsDocShell::GetOpener()
   return opener;
 }
 
-void
-nsDocShell::SetOpenedRemote(nsITabParent* aOpenedRemote)
-{
-  mOpenedRemote = do_GetWeakReference(aOpenedRemote);
-}
-
-nsITabParent*
-nsDocShell::GetOpenedRemote()
-{
-  nsCOMPtr<nsITabParent> openedRemote(do_QueryReferent(mOpenedRemote));
-  return openedRemote;
-}
-
 URLSearchParams*
 nsDocShell::GetURLSearchParams()
 {

docshell/base/nsDocShell.h

@@ -963,7 +963,6 @@ private:
     nsTObserverArray<nsWeakPtr> mScrollObservers;
     nsCString         mOriginalUriString;
     nsWeakPtr mOpener;
-    nsWeakPtr mOpenedRemote;
 
     // A depth count of how many times NotifyRunToCompletionStart
     // has been called without a matching NotifyRunToCompletionStop.

docshell/base/nsIDocShell.idl

@@ -54,7 +54,7 @@ interface nsITabParent;
  
 typedef unsigned long nsLoadFlags;
 
-[scriptable, builtinclass, uuid(888fcf04-a69b-11e4-8d33-6fbb72d2eb03)]
+[scriptable, builtinclass, uuid(e1ad6cc6-f10a-4882-b5f8-31e70c5ddadf)]
 interface nsIDocShell : nsIDocShellTreeItem
 {
   /**
@@ -1025,13 +1025,6 @@ interface nsIDocShell : nsIDocShellTreeItem
   [noscript,notxpcom,nostdcall] void setOpener(in nsITabParent aOpener);
   [noscript,notxpcom,nostdcall] nsITabParent getOpener();
 
-  /**
-   * See the documentation for setOpener and getOpener about why we
-   * don't use attribute here instead.
-   */
-  [noscript,notxpcom,nostdcall] void setOpenedRemote(in nsITabParent aOpenedRemote);
-  [noscript,notxpcom,nostdcall] nsITabParent getOpenedRemote();
-
   // URLSearchParams for the window.location is owned by the docShell.
   [noscript,notxpcom] URLSearchParams getURLSearchParams();
 

dom/base/nsFrameLoader.cpp

@@ -2188,7 +2188,6 @@ nsFrameLoader::TryRemoteBrowser()
                                    eCaseMatters)) {
       unused << mRemoteBrowser->SendSetUpdateHitRegion(true);
     }
-    parentDocShell->SetOpenedRemote(mRemoteBrowser);
   }
   return true;
 }

dom/ipc/TabParent.cpp

@@ -647,11 +647,22 @@ TabParent::RecvCreateWindow(PBrowserParent* aNewTab,
   nsCOMPtr<nsPIDOMWindow> pwindow = do_QueryInterface(window);
   NS_ENSURE_TRUE(pwindow, false);
 
-  nsRefPtr<nsIDocShell> newDocShell = pwindow->GetDocShell();
-  NS_ENSURE_TRUE(newDocShell, false);
+  nsCOMPtr<nsIDocShell> windowDocShell = pwindow->GetDocShell();
+  NS_ENSURE_TRUE(windowDocShell, false);
 
-  nsCOMPtr<nsITabParent> newRemoteTab = newDocShell->GetOpenedRemote();
-  NS_ENSURE_TRUE(newRemoteTab, false);
+  nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
+  windowDocShell->GetTreeOwner(getter_AddRefs(treeOwner));
+
+  nsCOMPtr<nsIXULWindow> xulWin = do_GetInterface(treeOwner);
+  NS_ENSURE_TRUE(xulWin, false);
+
+  nsCOMPtr<nsIXULBrowserWindow> xulBrowserWin;
+  xulWin->GetXULBrowserWindow(getter_AddRefs(xulBrowserWin));
+  NS_ENSURE_TRUE(xulBrowserWin, false);
+
+  nsCOMPtr<nsITabParent> newRemoteTab;
+  rv = xulBrowserWin->ForceInitialBrowserRemote(getter_AddRefs(newRemoteTab));
+  NS_ENSURE_SUCCESS(rv, false);
 
   MOZ_ASSERT(static_cast<TabParent*>(newRemoteTab.get()) == newTab);
 

xpfe/appshell/nsIXULBrowserWindow.idl

@@ -12,13 +12,14 @@ interface nsIRequest;
 interface nsIDOMElement;
 interface nsIInputStream;
 interface nsIDocShell;
+interface nsITabParent;
 
 /**
  * The nsIXULBrowserWindow supplies the methods that may be called from the
  * internals of the browser area to tell the containing xul window to update
  * its ui. 
  */
-[scriptable, uuid(162d3378-a7d5-410c-8635-fe80e32020fc)]
+[scriptable, uuid(db89f748-9736-40b2-a172-3928aa1194b2)]
 interface nsIXULBrowserWindow : nsISupports
 {
   /**
@@ -40,6 +41,14 @@ interface nsIXULBrowserWindow : nsISupports
                                 in nsIDOMNode linkNode,
                                 in boolean isAppTab);
 
+  /**
+   * Find the initial browser of the window and set its remote attribute.
+   * This can be used to ensure that there is a remote browser in a new
+   * window when it first spawns.
+   *
+   */
+  nsITabParent forceInitialBrowserRemote();
+
   /**
    * Determines whether a load should continue.
    *

xpfe/appshell/nsXULWindow.cpp

@@ -34,6 +34,7 @@
 #include "nsIInterfaceRequestor.h"
 #include "nsIInterfaceRequestorUtils.h"
 #include "nsIIOService.h"
+#include "nsILoadContext.h"
 #include "nsIObserverService.h"
 #include "nsIWindowMediator.h"
 #include "nsIScreenManager.h"
@@ -1798,19 +1799,10 @@ NS_IMETHODIMP nsXULWindow::CreateNewContentWindow(int32_t aChromeFlags,
       if (!NS_ProcessNextEvent(thread))
         break;
     }
- }
-
-  // If aOpeningTab is not null, it means that we're creating a new window
-  // with a remote browser, which doesn't have a primary docshell. In that
-  // case, we check for the chrome window docshell and make sure that a new
-  // remote tab was opened and stashed in that docshell.
-  if (aOpeningTab) {
-    NS_ENSURE_STATE(xulWin->mDocShell);
-    NS_ENSURE_STATE(xulWin->mDocShell->GetOpenedRemote());
-  } else {
-    NS_ENSURE_STATE(xulWin->mPrimaryContentShell);
   }
 
+  NS_ENSURE_STATE(xulWin->mPrimaryContentShell);
+
   *_retval = newWindow;
   NS_ADDREF(*_retval);