Plumb GpuMemoryBuffer allocation to GPU process.

content/common/gpu/gpu_channel_manager.h

Index: content/common/gpu/gpu_channel_manager.h
diff --git a/content/common/gpu/gpu_channel_manager.h b/content/common/gpu/gpu_channel_manager.h
index b6667be99291b35f6b997855511bc83a34d67c2e..cc38630fc154d00439373af2cfaafda6333ffcb6 100644
--- a/content/common/gpu/gpu_channel_manager.h
+++ b/content/common/gpu/gpu_channel_manager.h
@@ -28,6 +28,7 @@ class WaitableEvent;
 
 namespace gfx {
 class GLShareGroup;
+struct GpuMemoryBufferHandle;
 }
 
 namespace gpu {
@@ -127,6 +128,13 @@ class GpuChannelManager : public IPC::Listener,
   void OnDeleteImage(int32 client_id, int32 image_id, int32 sync_point);
   void OnDeleteImageSyncPointRetired(ImageOperation*);
   void OnLoadedShader(std::string shader);
+  void OnCreateGpuMemoryBuffer(const gfx::GpuMemoryBufferHandle& handle,
+                               size_t width,
+                               size_t height,
+                               unsigned internalformat,
+                               unsigned usage);
+  void OnDestroyGpuMemoryBuffer(const gfx::GpuMemoryBufferHandle& handle,
+                                int32 sync_point);
 
   void OnLoseAllContexts();