cc: Force commit on the frame after a copy request

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 <vector>
 
 #include "base/gtest_prod_util.h"
@@ skipping 272 matching lines @@
 
   // The number of delegated frame acks that are pending, to delay resource
   // returns until the acks are sent.
   int pending_delegated_ack_count_;
 
   // True after a delegated frame has been skipped, until a frame is not
   // skipped.
   bool skipped_frames_;
   std::vector<ui::LatencyInfo> skipped_latency_info_list_;
 
+  // Workaround to prevent creating unnecessarily persistent render passes.
+  // When a copy request is made, it will force a separate render pass for the
+  // web contents, which will persist until the a commit removes it. Use this
+  // flag to force a full commit on the next frame, to remove that render pass.
+  // http://crbug.com/564832
+  bool force_commit_for_next_frame_;
+
   // Holds delegated resources that have been given to a DelegatedFrameProvider,
   // and gives back resources when they are no longer in use for return to the
   // renderer.
   scoped_refptr<cc::DelegatedFrameResourceCollection> resource_collection_;
 
   // Provides delegated frame updates to the cc::DelegatedRendererLayer.
   scoped_refptr<cc::DelegatedFrameProvider> frame_provider_;
 
   // State for rendering into a Surface.
   scoped_ptr<cc::SurfaceIdAllocator> id_allocator_;
@@ skipping 42 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_