Add support for writing raw encoder output to .ivf files.

webrtc/video/video_receive_stream.h

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 13 matching lines @@
 #include "webrtc/video/receive_statistics_proxy.h"
 #include "webrtc/video/vie_channel.h"
 #include "webrtc/video/vie_encoder.h"
 #include "webrtc/video_encoder.h"
 #include "webrtc/video_receive_stream.h"
 
 namespace webrtc {
 
 class CallStats;
 class CongestionController;
+class IvfFileWriter;
 class ProcessThread;
 class VoiceEngine;
 class VieRemb;
 
 namespace internal {
 
 class VideoReceiveStream : public webrtc::VideoReceiveStream,
                            public I420FrameCallback,
                            public VideoRenderCallback,
                            public EncodedImageCallback,
@@ skipping 59 matching lines @@
   CallStats* const call_stats_;
   VieRemb* const remb_;
 
   std::unique_ptr<VideoCodingModule> vcm_;
   IncomingVideoStream incoming_video_stream_;
   ReceiveStatisticsProxy stats_proxy_;
   ViEChannel vie_channel_;
   ViEReceiver* const vie_receiver_;
   ViESyncModule vie_sync_;
   RtpRtcp* const rtp_rtcp_;
+
+  std::unique_ptr<IvfFileWriter> ivf_writer_;
 };
 }  // namespace internal
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_VIDEO_RECEIVE_STREAM_H_