cc: Remove the unused compositor thread variable and interface.

content/browser/compositor/gpu_process_transport_factory.h

 // Copyright 2014 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_COMPOSITOR_GPU_PROCESS_TRANSPORT_FACTORY_H_
 #define CONTENT_BROWSER_COMPOSITOR_GPU_PROCESS_TRANSPORT_FACTORY_H_
 
 #include <map>
 
 #include "base/id_map.h"
@@ skipping 36 matching lines @@
   void CreateOutputSurface(base::WeakPtr<ui::Compositor> compositor,
                            bool software_fallback) override;
   scoped_refptr<ui::Reflector> CreateReflector(ui::Compositor* source,
                                                ui::Layer* target) override;
   void RemoveReflector(scoped_refptr<ui::Reflector> reflector) override;
   void RemoveCompositor(ui::Compositor* compositor) override;
   scoped_refptr<cc::ContextProvider> SharedMainThreadContextProvider() override;
   bool DoesCreateTestContexts() override;
   cc::SharedBitmapManager* GetSharedBitmapManager() override;
   gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() override;
-  base::MessageLoopProxy* GetCompositorMessageLoop() override;
   scoped_ptr<cc::SurfaceIdAllocator> CreateSurfaceIdAllocator() override;
   void ResizeDisplay(ui::Compositor* compositor,
                      const gfx::Size& size) override;
 
   // ImageTransportFactory implementation.
   ui::ContextFactory* GetContextFactory() override;
   gfx::GLSurfaceHandle GetSharedSurfaceHandle() override;
   cc::SurfaceManager* GetSurfaceManager() override;
   GLHelper* GetGLHelper() override;
   void AddObserver(ImageTransportFactoryObserver* observer) override;
@@ skipping 11 matching lines @@
   void EstablishedGpuChannel(base::WeakPtr<ui::Compositor> compositor,
                              bool create_software_renderer);
   scoped_ptr<WebGraphicsContext3DCommandBufferImpl> CreateContextCommon(
       scoped_refptr<GpuChannelHost> gpu_channel_host,
       int surface_id);
 
   void OnLostMainThreadSharedContextInsideCallback();
   void OnLostMainThreadSharedContext();
 
   typedef std::map<ui::Compositor*, PerCompositorData*> PerCompositorDataMap;
-  scoped_ptr<base::Thread> compositor_thread_;
   PerCompositorDataMap per_compositor_data_;
   scoped_refptr<ContextProviderCommandBuffer> shared_main_thread_contexts_;
   scoped_ptr<GLHelper> gl_helper_;
   ObserverList<ImageTransportFactoryObserver> observer_list_;
   scoped_ptr<cc::SurfaceManager> surface_manager_;
   uint32_t next_surface_id_namespace_;
 
   // The contents of this map and its methods may only be used on the compositor
   // thread.
   IDMap<BrowserCompositorOutputSurface> output_surface_map_;
 
   scoped_refptr<BrowserCompositorOutputSurfaceProxy> output_surface_proxy_;
 
   base::WeakPtrFactory<GpuProcessTransportFactory> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessTransportFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_GPU_PROCESS_TRANSPORT_FACTORY_H_