Fix the issue that any tab/window closing hotkey will crash the Pepper Flash Fullscreen.

content/browser/web_contents/web_contents_impl.h

 // Copyright (c) 2012 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_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <map>
+#include <set>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "content/browser/browser_plugin/old/old_browser_plugin_host.h"
 #include "content/browser/renderer_host/java/java_bridge_dispatcher_host_manager.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
@@ skipping 19 matching lines @@
 class WebContentsImpl;
 struct ViewMsg_PostMessage_Params;
 
 namespace content {
 class ColorChooser;
 class DownloadItem;
 class JavaScriptDialogCreator;
 class RenderViewHost;
 class RenderViewHostDelegateView;
 class RenderViewHostImpl;
+class RenderWidgetHostImpl;
 class SiteInstance;
 class TestWebContents;
 class WebContentsDelegate;
 class WebContentsObserver;
 class WebContentsView;
 class WebContentsViewDelegate;
 struct LoadNotificationDetails;
 
 // Factory function for the implementations that content knows about. Takes
 // ownership of |delegate|.
@@ skipping 350 matching lines @@
       const content::MediaStreamRequest* request,
       const content::MediaResponseCallback& callback) OVERRIDE;
 
 #if defined(OS_ANDROID)
   virtual void AttachLayer(WebKit::WebLayer* layer) OVERRIDE;
   virtual void RemoveLayer(WebKit::WebLayer* layer) OVERRIDE;
 #endif
 
   // RenderWidgetHostDelegate --------------------------------------------------
 
+  virtual void RenderWidgetDeleted(
+      content::RenderWidgetHostImpl* render_widget_host) OVERRIDE;
   virtual bool PreHandleKeyboardEvent(
       const content::NativeWebKeyboardEvent& event,
       bool* is_keyboard_shortcut) OVERRIDE;
   virtual void HandleKeyboardEvent(
       const content::NativeWebKeyboardEvent& event) OVERRIDE;
 
   // RenderViewHostManager::Delegate -------------------------------------------
 
   virtual bool CreateRenderViewForRenderManager(
       content::RenderViewHost* render_view_host, int opener_route_id) OVERRIDE;
@@ skipping 396 matching lines @@
   content::ColorChooser* color_chooser_;
 
   // This must be at the end, or else we might get notifications and use other
   // member variables that are gone.
   content::NotificationRegistrar registrar_;
 
   // Used during IPC message dispatching so that the handlers can get a pointer
   // to the RVH through which the message was received.
   content::RenderViewHost* message_source_;
 
+  // All live RenderWidgetHostImpls that are created by this object and may
+  // outlive it.
+  std::set<content::RenderWidgetHostImpl*> created_widgets_;
+
   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
 };
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_