Implement native GMB backbuffers in the GLES2 Command Decoder.

gpu/ipc/service/gpu_memory_buffer_factory_ozone_native_pixmap.h

Index: gpu/ipc/service/gpu_memory_buffer_factory_ozone_native_pixmap.h
diff --git a/gpu/ipc/service/gpu_memory_buffer_factory_ozone_native_pixmap.h b/gpu/ipc/service/gpu_memory_buffer_factory_ozone_native_pixmap.h
index ce9273065d90af64e0cb5c475debcbe695b2d23d..d64ba23eaa1b0ff7ae45da1f7a50c5ece0d09dc5 100644
--- a/gpu/ipc/service/gpu_memory_buffer_factory_ozone_native_pixmap.h
+++ b/gpu/ipc/service/gpu_memory_buffer_factory_ozone_native_pixmap.h
@@ -44,6 +44,10 @@ class GPU_EXPORT GpuMemoryBufferFactoryOzoneNativePixmap
       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:
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferFactoryOzoneNativePixmap);