Get rid of last gpu_messages.h dependency in chrome by having chrome ask the GPUProcessHostUIShim...

content/browser/gpu/gpu_process_host_ui_shim.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_GPU_GPU_PROCESS_HOST_UI_SHIM_H_
 #define CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_UI_SHIM_H_
 #pragma once
 
 // This class lives on the UI thread and supports classes like the
 // BackingStoreProxy, which must live on the UI thread. The IO thread
@@ skipping 56 matching lines @@
 
   // IPC::Channel::Sender implementation.
   virtual bool Send(IPC::Message* msg);
 
   // IPC::Channel::Listener implementation.
   // The GpuProcessHost causes this to be called on the UI thread to
   // dispatch the incoming messages from the GPU process, which are
   // actually received on the IO thread.
   virtual bool OnMessageReceived(const IPC::Message& message);
 
+  void SimulateRemoveAllContext();
+  void SimulateCrash();
+  void SimulateHang();
+
 #if defined(OS_MACOSX) || defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
   // TODO(apatrick): Remove this when mac does not use AcceleratedSurfaces for
   // when running the GPU thread in the browser process.
   // This is now also used in TOUCH_UI builds.
   static void SendToGpuHost(int host_id, IPC::Message* msg);
 #endif
 
  private:
   explicit GpuProcessHostUIShim(int host_id);
   virtual ~GpuProcessHostUIShim();
@@ skipping 21 matching lines @@
 #if defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
   void OnAcceleratedSurfaceRelease(
       const GpuHostMsg_AcceleratedSurfaceRelease_Params& params);
 #endif
 
   // The serial number of the GpuProcessHost / GpuProcessHostUIShim pair.
   int host_id_;
 };
 
 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_UI_SHIM_H_