Delete obviously unneeded forward declarations in chrome/browser/*.h.

chrome/browser/gpu_process_host.h

 // Copyright (c) 2010 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 CHROME_BROWSER_GPU_PROCESS_HOST_H_
 #define CHROME_BROWSER_GPU_PROCESS_HOST_H_
 #pragma once
 
 #include <queue>
 
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/browser_child_process_host.h"
 #include "chrome/browser/renderer_host/resource_message_filter.h"
 #include "chrome/common/gpu_info.h"
 #include "gfx/native_widget_types.h"
 
-class CommandBufferProxy;
 struct GpuHostMsg_AcceleratedSurfaceSetIOSurface_Params;
 
 namespace IPC {
 struct ChannelHandle;
 class Message;
 }
 
 class GpuProcessHost : public BrowserChildProcessHost {
  public:
   // Getter for the singleton. This will return NULL on failure.
@@ skipping 87 matching lines @@
   // the GPU process, but haven't heard back about yet.
   std::queue<ChannelRequest> sent_requests_;
 
   // The pending synchronization requests we need to reply to.
   std::queue<SynchronizationRequest> queued_synchronization_replies_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 };
 
 #endif  // CHROME_BROWSER_GPU_PROCESS_HOST_H_