Support window.opener after a process swap.

content/browser/renderer_host/render_widget_host.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_RENDERER_HOST_RENDER_WIDGET_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_H_
 #pragma once
 
 #include <deque>
 #include <string>
@@ skipping 158 matching lines @@
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
   // Sends a message to the corresponding object in the renderer.
   virtual bool Send(IPC::Message* msg);
 
   // Called to notify the RenderWidget that it has been hidden or restored from
   // having been hidden.
   void WasHidden();
   void WasRestored();
 
+  // Called to notify the RenderWidget that it has been visibly swapped out,
+  // such that it is safe for the process to exit if not otherwise in use.
+  void WasSwappedOut();
+
   // Called to notify the RenderWidget that it has been resized.
   void WasResized();
 
   // Called to notify the RenderWidget that its associated native window got
   // focused.
   virtual void GotFocus();
 
   // Tells the renderer it got/lost focus.
   void Focus();
   void Blur();
@@ skipping 481 matching lines @@
 
   std::vector<gfx::PluginWindowHandle> deferred_plugin_handles_;
 
   // The last scroll offset of the render widget.
   gfx::Point last_scroll_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHost);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_H_