Implement native GMB backbuffers in the GLES2 Command Decoder.

gpu/ipc/service/gpu_memory_buffer_factory_surface_texture.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 GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_SURFACE_TEXTURE_H_
 #define GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_SURFACE_TEXTURE_H_
 
 #include <utility>
 
 #include "base/containers/hash_tables.h"
@@ skipping 31 matching lines @@
                               int client_id) override;
   ImageFactory* AsImageFactory() override;
 
   // Overridden from ImageFactory:
   scoped_refptr<gl::GLImage> CreateImageForGpuMemoryBuffer(
       const gfx::GpuMemoryBufferHandle& handle,
       const gfx::Size& size,
       gfx::BufferFormat format,
       unsigned internalformat,
       int client_id) override;
+  scoped_refptr<gl::GLImage> CreateAnonymousImage(
+      const gfx::Size& size,
+      gfx::BufferFormat format,
+      unsigned internalformat) override;
 
  private:
   typedef std::pair<int, int> SurfaceTextureMapKey;
   typedef base::hash_map<SurfaceTextureMapKey,
                          scoped_refptr<gl::SurfaceTexture>>
       SurfaceTextureMap;
   SurfaceTextureMap surface_textures_;
   base::Lock surface_textures_lock_;
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_SURFACE_TEXTURE_H_