Revert of Re-land: cc: Use worker context for one-copy tile initialization.

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 84 matching lines @@
 
   typedef std::map<ui::Compositor*, PerCompositorData*> PerCompositorDataMap;
   PerCompositorDataMap per_compositor_data_;
   scoped_refptr<ContextProviderCommandBuffer> shared_main_thread_contexts_;
   scoped_ptr<GLHelper> gl_helper_;
   base::ObserverList<ImageTransportFactoryObserver> observer_list_;
   scoped_ptr<cc::SurfaceManager> surface_manager_;
   uint32_t next_surface_id_namespace_;
   scoped_ptr<cc::TaskGraphRunner> task_graph_runner_;
   scoped_ptr<base::SimpleThread> raster_thread_;
-  scoped_refptr<ContextProviderCommandBuffer> shared_worker_context_provider_;
 
 #if defined(OS_WIN)
   scoped_ptr<OutputDeviceBacking> software_backing_;
 #endif
 
   // The contents of this map and its methods may only be used on the compositor
   // thread.
   IDMap<BrowserCompositorOutputSurface> output_surface_map_;
 
   base::WeakPtrFactory<GpuProcessTransportFactory> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessTransportFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_GPU_PROCESS_TRANSPORT_FACTORY_H_