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

webrtc/modules/video_coding/include/video_coding.h

 /*
  *  Copyright (c) 2012 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 60 matching lines @@
   static VideoCodingModule* Create(
       Clock* clock,
       VideoEncoderRateObserver* encoder_rate_observer,
       VCMQMSettingsCallback* qm_settings_callback);
 
   static VideoCodingModule* Create(
       Clock* clock,
       VideoEncoderRateObserver* encoder_rate_observer,
       VCMQMSettingsCallback* qm_settings_callback,
       NackSender* nack_sender,
-      KeyFrameRequestSender* keyframe_request_sender);
+      KeyFrameRequestSender* keyframe_request_sender,
+      EncodedImageCallback* pre_decode_image_callback);
 
   static VideoCodingModule* Create(Clock* clock, EventFactory* event_factory);
 
   static VideoCodingModule* Create(
       Clock* clock,
       EventFactory* event_factory,
       NackSender* nack_sender,
       KeyFrameRequestSender* keyframe_request_sender);
 
   // Get supported codec settings using codec type
@@ skipping 412 matching lines @@
 
   // Lets the sender suspend video when the rate drops below
   // |threshold_bps|, and turns back on when the rate goes back up above
   // |threshold_bps| + |window_bps|.
   virtual void SuspendBelowMinBitrate() = 0;
 
   // Returns true if SuspendBelowMinBitrate is engaged and the video has been
   // suspended due to bandwidth limitations; otherwise false.
   virtual bool VideoSuspended() const = 0;
 
-  virtual void RegisterPreDecodeImageCallback(
-      EncodedImageCallback* observer) = 0;
   virtual void RegisterPostEncodeImageCallback(
       EncodedImageCallback* post_encode_callback) = 0;
   // Releases pending decode calls, permitting faster thread shutdown.
   virtual void TriggerDecoderShutdown() = 0;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_INCLUDE_VIDEO_CODING_H_