Remove BrowserGpuChannelHostFactory usage of UnsafeGetMessageLoopForThread

content/browser/gpu/browser_gpu_channel_host_factory.h

Index: content/browser/gpu/browser_gpu_channel_host_factory.h
diff --git a/content/browser/gpu/browser_gpu_channel_host_factory.h b/content/browser/gpu/browser_gpu_channel_host_factory.h
index 9cc0cd5c98b4f212082e3d23e06d66a5c56f9d1c..2810c06270a4a17406eb989704641f528a272643 100644
--- a/content/browser/gpu/browser_gpu_channel_host_factory.h
+++ b/content/browser/gpu/browser_gpu_channel_host_factory.h
@@ -32,8 +32,7 @@ class CONTENT_EXPORT BrowserGpuChannelHostFactory
   static uint32 GetImageTextureTarget();
 
   // Overridden from GpuChannelHostFactory:
-  bool IsMainThread() override;
-  base::MessageLoop* GetMainLoop() override;
+  scoped_refptr<base::SingleThreadTaskRunner> GetMainTaskRunner() override;
   scoped_refptr<base::MessageLoopProxy> GetIOLoopProxy() override;
   scoped_ptr<base::SharedMemory> AllocateSharedMemory(size_t size) override;
   CreateCommandBufferResult CreateViewCommandBuffer(
@@ -93,6 +92,7 @@ class CONTENT_EXPORT BrowserGpuChannelHostFactory
                                 const gfx::GpuMemoryBufferHandle& handle);
 
   const int gpu_client_id_;
+  scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
   scoped_ptr<base::WaitableEvent> shutdown_event_;
   scoped_refptr<GpuChannelHost> gpu_channel_;
   scoped_ptr<BrowserGpuMemoryBufferManager> gpu_memory_buffer_manager_;