Implement native GMB backbuffers in the GLES2 Command Decoder.

gpu/command_buffer/service/image_factory.h

Index: gpu/command_buffer/service/image_factory.h
diff --git a/gpu/command_buffer/service/image_factory.h b/gpu/command_buffer/service/image_factory.h
index cfa4cef27f0f6195c7608edbba5f1b0f1ad99348..cdd3d1aadabc91ffb1bf48ab2935a50a385c7b02 100644
--- a/gpu/command_buffer/service/image_factory.h
+++ b/gpu/command_buffer/service/image_factory.h
@@ -30,6 +30,13 @@ class GPU_EXPORT ImageFactory {
       unsigned internalformat,
       int client_id) = 0;
 
+  // Create an anonymous GLImage backed by a GpuMemoryBuffer that doesn't have a
+  // client_id. It can't be passed to other processes.
+  virtual scoped_refptr<gl::GLImage> CreateAnonymousImage(
+      const gfx::Size& size,
+      gfx::BufferFormat format,
+      unsigned internalformat) = 0;
+
  protected:
   virtual ~ImageFactory();
 };