RenderWidgetHostViewChildFrame should use CompositorFrameSinkSupport

cc/surfaces/compositor_frame_sink_support_client.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 CC_SURFACES_COMPOSITOR_FRAME_SINK_SUPPORT_CLIENT_H_
 #define CC_SURFACES_COMPOSITOR_FRAME_SINK_SUPPORT_CLIENT_H_
 
 #include "cc/resources/returned_resource.h"
+#include "cc/surfaces/surfaces_export.h"
 
 namespace gfx {
 class Rect;
 }
 
 namespace cc {
 
 class LocalSurfaceId;
 
 struct BeginFrameArgs;
 
-class CompositorFrameSinkSupportClient {
+class CC_SURFACES_EXPORT CompositorFrameSinkSupportClient {

[Fady Samuel, 2017/02/23 23:26:50]

Undo this.

  public:
   // Notification that the previous CompositorFrame given to
   // SubmitCompositorFrame() has been processed and that another frame
   // can be submitted. This provides backpressure from the display compositor
   // so that frames are submitted only at the rate it can handle them.
   // TODO(fsamuel): This method ought not be necessary with unified BeginFrame.
   // However, there's a fair amount of cleanup and refactoring necessary to get
   // rid of it.
   virtual void DidReceiveCompositorFrameAck() = 0;
 
   // Notification for the client to generate a CompositorFrame.
   virtual void OnBeginFrame(const BeginFrameArgs& args) = 0;
 
   // Returns resources sent to SubmitCompositorFrame to be reused or freed.
   virtual void ReclaimResources(const ReturnedResourceArray& resources) = 0;
 
   // Called when surface is being scheduled for a draw.
   virtual void WillDrawSurface(const LocalSurfaceId& local_surface_id,
                                const gfx::Rect& damage_rect) = 0;
 
  protected:
   virtual ~CompositorFrameSinkSupportClient() {}
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_COMPOSITOR_FRAME_SINK_SUPPORT_CLIENT_H_