content: Add CreateGpuMemoryBufferFromHandle to GpuMemoryBufferFactory interface.

content/common/gpu/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 CONTENT_COMMON_GPU_GPU_MEMORY_BUFFER_FACTORY_SURFACE_TEXTURE_H_
 #define CONTENT_COMMON_GPU_GPU_MEMORY_BUFFER_FACTORY_SURFACE_TEXTURE_H_
 
 #include <utility>
 
 #include "base/containers/hash_tables.h"
@@ skipping 23 matching lines @@
                                                       gfx::BufferUsage usage);
 
   // Overridden from GpuMemoryBufferFactory:
   gfx::GpuMemoryBufferHandle CreateGpuMemoryBuffer(
       gfx::GpuMemoryBufferId id,
       const gfx::Size& size,
       gfx::BufferFormat format,
       gfx::BufferUsage usage,
       int client_id,
       gfx::PluginWindowHandle surface_handle) override;
+  gfx::GpuMemoryBufferHandle CreateGpuMemoryBufferFromHandle(
+      const gfx::GpuMemoryBufferHandle& handle,
+      gfx::GpuMemoryBufferId id,
+      const gfx::Size& size,
+      gfx::BufferFormat format,
+      int client_id) override;
   void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
                               int client_id) override;
   gpu::ImageFactory* AsImageFactory() override;
 
   // Overridden from gpu::ImageFactory:
   scoped_refptr<gfx::GLImage> CreateImageForGpuMemoryBuffer(
       const gfx::GpuMemoryBufferHandle& handle,
       const gfx::Size& size,
       gfx::BufferFormat format,
       unsigned internalformat,
       int client_id) override;
 
  private:
   typedef std::pair<int, int> SurfaceTextureMapKey;
   typedef base::hash_map<SurfaceTextureMapKey,
                          scoped_refptr<gfx::SurfaceTexture>> SurfaceTextureMap;
   SurfaceTextureMap surface_textures_;
   base::Lock surface_textures_lock_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_GPU_MEMORY_BUFFER_FACTORY_SURFACE_TEXTURE_H_