Implement native GMB backbuffers in the GLES2 Command Decoder.

gpu/ipc/service/gpu_memory_buffer_factory_io_surface.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_IO_SURFACE_H_
 #define GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_IO_SURFACE_H_
 
 #include <utility>
 
 #include <IOSurface/IOSurface.h>
@@ skipping 35 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;
+  unsigned RequiredTextureType() override;
+  bool SupportsFormatRGB() override;
 
  private:
   typedef std::pair<gfx::IOSurfaceId, int> IOSurfaceMapKey;
   typedef base::hash_map<IOSurfaceMapKey, base::ScopedCFTypeRef<IOSurfaceRef>>
       IOSurfaceMap;
   // TOOD(reveman): Remove |io_surfaces_| and allow IOSurface backed GMBs to be
   // used with any GPU process by passing a mach_port to CreateImageCHROMIUM.
   IOSurfaceMap io_surfaces_;
   base::Lock io_surfaces_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferFactoryIOSurface);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_IO_SURFACE_H_