cc: Introduce BeginFrame sequence numbers and acknowledgements.

content/browser/renderer_host/delegated_frame_host.h

 // Copyright 2014 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 CONTENT_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 150 matching lines @@
 
   // Given a RenderWidgetHostViewBase that renders to a Surface that is
   // contained within this class' Surface, find the relative transform between
   // the Surfaces and apply it to a point. Returns false if a Surface has not
   // yet been created or if |target_view| is not a descendant RWHV from our
   // client.
   bool TransformPointToCoordSpaceForView(const gfx::Point& point,
                                          RenderWidgetHostViewBase* target_view,
                                          gfx::Point* transformed_point);
 
+  bool skipped_frames() const { return skipped_frames_; }
+
   // Exposed for tests.
   cc::SurfaceId SurfaceIdForTesting() const {
     return cc::SurfaceId(frame_sink_id_, local_frame_id_);
   }
 
   const cc::LocalFrameId& LocalFrameIdForTesting() const {
     return local_frame_id_;
   }
 
   void OnCompositingDidCommitForTesting(ui::Compositor* compositor) {
@@ skipping 149 matching lines @@
   // YUV readback pipeline.
   std::unique_ptr<display_compositor::ReadbackYUVInterface>
       yuv_readback_pipeline_;
 
   std::unique_ptr<DelegatedFrameEvictor> delegated_frame_evictor_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_H_