Run draw callback immediately if no Display is damaged.

content/browser/compositor/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_COMPOSITOR_DELEGATED_FRAME_HOST_H_
 #define CONTENT_BROWSER_COMPOSITOR_DELEGATED_FRAME_HOST_H_
 
 #include "cc/layers/delegated_frame_provider.h"
 #include "cc/layers/delegated_frame_resource_collection.h"
 #include "cc/output/copy_output_result.h"
 #include "cc/surfaces/surface_factory_client.h"
 #include "content/browser/compositor/image_transport_factory.h"
 #include "content/browser/compositor/owned_mailbox.h"
 #include "content/browser/renderer_host/delegated_frame_evictor.h"
 #include "content/browser/renderer_host/dip_util.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/public/browser/render_process_host.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/compositor_observer.h"
 #include "ui/compositor/compositor_vsync_manager.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_owner_delegate.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 
 namespace cc {
 class SurfaceFactory;
+enum class SurfaceDrawStatus;
 }
 
 namespace media {
 class VideoFrame;
 }
 
 namespace content {
 
 class DelegatedFrameHost;
 class ReadbackYUVInterface;
@@ skipping 167 matching lines @@
       const base::Callback<void(bool)>& callback,
       scoped_refptr<OwnedMailbox> subscriber_texture,
       scoped_ptr<cc::SingleReleaseCallback> release_callback,
       bool result);
   static void ReturnSubscriberTexture(
       base::WeakPtr<DelegatedFrameHost> rwhva,
       scoped_refptr<OwnedMailbox> subscriber_texture,
       uint32 sync_point);
 
   void SendDelegatedFrameAck(uint32 output_surface_id);
-  void SurfaceDrawn(uint32 output_surface_id, bool drawn);
+  void SurfaceDrawn(uint32 output_surface_id, cc::SurfaceDrawStatus drawn);
   void SendReturnedDelegatedResources(uint32 output_surface_id);
 
   // DelegatedFrameEvictorClient implementation.
   void EvictDelegatedFrame() override;
 
   // cc::DelegatedFrameProviderClient implementation.
   void UnusedResourcesAreAvailable() override;
 
   // cc::SurfaceFactoryClient implementation.
   void ReturnResources(const cc::ReturnedResourceArray& resources) override;
@@ skipping 82 matching lines @@
   // YUV readback pipeline.
   scoped_ptr<content::ReadbackYUVInterface>
       yuv_readback_pipeline_;
 
   scoped_ptr<DelegatedFrameEvictor> delegated_frame_evictor_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_DELEGATED_FRAME_HOST_H_