Add DCHECK to ensure IndexedDBDispatcher doesn't get re-created.

content/renderer/render_thread_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_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 14 matching lines @@
 #include "ui/gfx/native_widget_types.h"
 
 class AppCacheDispatcher;
 class AudioInputMessageFilter;
 class AudioMessageFilter;
 class CompositorThread;
 class DBMessageFilter;
 class DevToolsAgentFilter;
 struct DOMStorageMsg_Event_Params;
 class GpuChannelHost;
-class IndexedDBDispatcher;
 class RendererWebKitPlatformSupportImpl;
 class SkBitmap;
 class VideoCaptureImplManager;
 struct ViewMsg_New_Params;
 class WebDatabaseObserverImpl;
 
 namespace WebKit {
 class WebMediaStreamCenter;
 class WebMediaStreamCenterClient;
 class WebStorageEventDispatcher;
@@ skipping 167 matching lines @@
   void OnTransferBitmap(const SkBitmap& bitmap, int resource_id);
   void OnPurgePluginListCache(bool reload_pages);
   void OnNetworkStateChanged(bool online);
   void OnGetAccessibilityTree();
   void OnTempCrashWithData(const GURL& data);
 
   void IdleHandlerInForegroundTab();
 
   // These objects live solely on the render thread.
   scoped_ptr<AppCacheDispatcher> appcache_dispatcher_;
-  scoped_ptr<IndexedDBDispatcher> main_thread_indexed_db_dispatcher_;
   scoped_ptr<RendererWebKitPlatformSupportImpl> webkit_platform_support_;
   scoped_ptr<WebKit::WebStorageEventDispatcher> dom_storage_event_dispatcher_;
 
   // Used on the render thread and deleted by WebKit at shutdown.
   content::MediaStreamCenter* media_stream_center_;
 
   // Used on the renderer and IPC threads.
   scoped_refptr<DBMessageFilter> db_message_filter_;
   scoped_refptr<AudioInputMessageFilter> audio_input_message_filter_;
   scoped_refptr<AudioMessageFilter> audio_message_filter_;
@@ skipping 40 matching lines @@
 
   bool compositor_initialized_;
   scoped_ptr<CompositorThread> compositor_thread_;
 
   ObserverList<content::RenderProcessObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_