Make cc::CompositorFrames movable [Part 2 of 2]

components/mus/surfaces/display_compositor.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_DISPLAY_COMPOSITOR_H_
 #define COMPONENTS_MUS_SURFACES_DISPLAY_COMPOSITOR_H_
 
 #include "cc/surfaces/display_client.h"
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_factory.h"
@@ skipping 21 matching lines @@
                     gfx::AcceleratedWidget widget,
                     const scoped_refptr<GpuState>& gpu_state,
                     const scoped_refptr<SurfacesState>& surfaces_state);
   ~DisplayCompositor() override;
 
   // DisplayCompositor embedders submit a CompositorFrame when content on the
   // display should be changed. A well-behaving embedder should only submit
   // a CompositorFrame once per BeginFrame tick. The callback is called the
   // first time this frame is used to draw, or if the frame is discarded.
   void SubmitCompositorFrame(
-      std::unique_ptr<cc::CompositorFrame> frame,
+      cc::CompositorFrame frame,
       const base::Callback<void(cc::SurfaceDrawStatus)>& callback);
 
   // TODO(fsamuel): This is used for surface hittesting and should not be
   // exposed outside of DisplayCompositor.
   const cc::SurfaceId& surface_id() const { return surface_id_; }
 
   // This requests the display CompositorFrame be rendered and given to the
   // callback within CopyOutputRequest.
   void RequestCopyOfOutput(
       std::unique_ptr<cc::CopyOutputRequest> output_request);
@@ skipping 18 matching lines @@
   cc::SurfaceId surface_id_;
 
   gfx::Size display_size_;
   std::unique_ptr<cc::Display> display_;
   DISALLOW_COPY_AND_ASSIGN(DisplayCompositor);
 };
 
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_SURFACES_DISPLAY_COMPOSITOR_H_