Move VideoDestinationHandler processing to the IO-thread.

content/renderer/pepper/pepper_video_destination_host.h

 // Copyright (c) 2013 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_RENDERER_PEPPER_PEPPER_VIDEO_DESTINATION_HOST_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_DESTINATION_HOST_H_
 
+#include <string>
+
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/content_export.h"
 #include "content/renderer/media/webrtc/video_destination_handler.h"
 #include "ppapi/c/pp_time.h"
 #include "ppapi/host/resource_host.h"
 
 namespace content {
 
@@ skipping 15 matching lines @@
  private:
   int32_t OnHostMsgOpen(ppapi::host::HostMessageContext* context,
                         const std::string& stream_url);
   int32_t OnHostMsgPutFrame(ppapi::host::HostMessageContext* context,
                             const ppapi::HostResource& image_data_resource,
                             PP_TimeTicks timestamp);
   int32_t OnHostMsgClose(ppapi::host::HostMessageContext* context);
 
   RendererPpapiHost* renderer_ppapi_host_;
 
-  scoped_ptr<FrameWriterInterface> frame_writer_;
+  VideoDestinationHandler::FrameWriterCallback frame_writer_;
 
   base::WeakPtrFactory<PepperVideoDestinationHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperVideoDestinationHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_DESTINATION_HOST_H_