Implement MusGpuMemoryBufferManager

components/mus/surfaces/direct_output_surface_ozone.h

 // Copyright 2016 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 COMPONENTS_MUS_SURFACES_DIRECT_OUTPUT_SURFACE_OZONE_H_
 #define COMPONENTS_MUS_SURFACES_DIRECT_OUTPUT_SURFACE_OZONE_H_
 
 #include <memory>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 50 matching lines @@
   bool BindToClient(cc::OutputSurfaceClient* client) override;
 
   // Taken from BrowserCompositor specific API.
   void OnUpdateVSyncParametersFromGpu(base::TimeTicks timebase,
                                       base::TimeDelta interval);
 
   // Called when a swap completion is sent from the GPU process.
   void OnGpuSwapBuffersCompleted(gfx::SwapResult result);
 
   display_compositor::GLHelper gl_helper_;
-  OzoneGpuMemoryBufferManager gpu_memory_buffer_manager_;
+  std::unique_ptr<OzoneGpuMemoryBufferManager> ozone_gpu_memory_buffer_manager_;
   std::unique_ptr<display_compositor::BufferQueue> buffer_queue_;
   std::unique_ptr<cc::SyntheticBeginFrameSource> synthetic_begin_frame_source_;
 
   base::WeakPtrFactory<DirectOutputSurfaceOzone> weak_ptr_factory_;
 };
 
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_SURFACES_DIRECT_OUTPUT_SURFACE_OZONE_H_