Add GPU memory tab to the task manager.

content/gpu/gpu_child_thread.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_GPU_GPU_CHILD_THREAD_H_
 #define CONTENT_GPU_GPU_CHILD_THREAD_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 34 matching lines @@
   void StopWatchdog();
 
   // ChildThread overrides.
   virtual bool Send(IPC::Message* msg) OVERRIDE;
   virtual bool OnControlMessageReceived(const IPC::Message& msg) OVERRIDE;
 
  private:
   // Message handlers.
   void OnInitialize();
   void OnCollectGraphicsInfo();
+  void OnGetVideoMemoryUsageStats();
   void OnClean();
   void OnCrash();
   void OnHang();
 
 #if defined(USE_TCMALLOC)
   void OnGetGpuTcmalloc();
 #endif
 
 #if defined(OS_WIN)
   static void CollectDxDiagnostics(GpuChildThread* thread);
@@ skipping 17 matching lines @@
 
   scoped_ptr<GpuChannelManager> gpu_channel_manager_;
 
   // Information about the GPU, such as device and vendor ID.
   content::GPUInfo gpu_info_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuChildThread);
 };
 
 #endif  // CONTENT_GPU_GPU_CHILD_THREAD_H_