Support window.opener after a process swap.

content/browser/tab_contents/render_view_host_manager.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_TAB_CONTENTS_RENDER_VIEW_HOST_MANAGER_H_
 #define CONTENT_BROWSER_TAB_CONTENTS_RENDER_VIEW_HOST_MANAGER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/common/notification_registrar.h"
+#include "content/browser/site_instance.h"
 
 class WebUI;
 class InterstitialPage;
 class NavigationController;
 class NavigationEntry;
 class Profile;
 class RenderWidgetHostView;
 class RenderViewHost;
-class SiteInstance;
 
 // Manages RenderViewHosts for a TabContents. Normally there is only one and
 // it is easy to do. But we can also have transitions of processes (and hence
 // RenderViewHosts) that can get complex.
 class RenderViewHostManager
     : public RenderViewHostDelegate::RendererManagement {
  public:
   // Functions implemented by our owner that we need.
   //
   // TODO(brettw) Clean this up! These are all the functions in TabContents that
@@ skipping 139 matching lines @@
   virtual void OnCrossSiteNavigationCanceled();
 
   // Called when a RenderViewHost is about to be deleted.
   void RenderViewDeleted(RenderViewHost* rvh);
 
   // Allows a caller to swap in a provided RenderViewHost to replace the
   // current RenderViewHost.  The current RVH will be shutdown and ultimately
   // deleted.
   void SwapInRenderViewHost(RenderViewHost* rvh);
 
+  // Returns whether the given RenderViewHost is on the list of swapped out
+  // RenderViewHosts.
+  bool IsSwappedOut(RenderViewHost* rvh);
+
  private:
   friend class TestTabContents;
   friend class RenderViewHostManagerTest;
 
   // Returns whether this tab should transition to a new renderer for
   // cross-site URLs.  Enabled unless we see the --process-per-tab command line
   // switch.  Can be overridden in unit tests.
   bool ShouldTransitionCrossSite();
 
   // Returns true if the two navigation entries are incompatible in some way
@@ skipping 55 matching lines @@
   // have an associated Web UI, in which case the Web UI pointer will be non-
   // NULL.
   //
   // The pending_web_ui may be non-NULL even when the pending_render_view_host_
   // is. This will happen when we're transitioning between two Web UI pages:
   // the RVH won't be swapped, so the pending pointer will be unused, but there
   // will be a pending Web UI associated with the navigation.
   RenderViewHost* pending_render_view_host_;
   scoped_ptr<WebUI> pending_web_ui_;
 
+  // A map of site instance ID to swapped out RenderViewHosts.
+  typedef base::hash_map<int32, RenderViewHost*> RenderViewHostMap;
+  RenderViewHostMap swapped_out_hosts_;
+
   // The intersitial page currently shown if any, not own by this class
   // (the InterstitialPage is self-owned, it deletes itself when hidden).
   InterstitialPage* interstitial_page_;
 
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostManager);
 };
 
 // The "details" for a NOTIFY_RENDER_VIEW_HOST_CHANGED notification. The old
 // host can be NULL when the first RenderViewHost is set.
 struct RenderViewHostSwitchedDetails {
   RenderViewHost* old_host;
   RenderViewHost* new_host;
 };
 
 #endif  // CONTENT_BROWSER_TAB_CONTENTS_RENDER_VIEW_HOST_MANAGER_H_