Parse FlexFEC RTP headers in Call and add integration with BWE.

webrtc/media/engine/webrtcvideoengine2.cc

 /*
  *  Copyright (c) 2014 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 2331 matching lines @@
   stream_->Start();
   if (IsFlexfecFieldTrialEnabled() && flexfec_config_.IsCompleteAndEnabled()) {
     webrtc::FlexfecReceiveStream::Config config;
     // Payload types and SSRCs come from the FlexFEC specific part of the SDP.
     config.payload_type = flexfec_config_.flexfec_payload_type;
     config.remote_ssrc = flexfec_config_.flexfec_ssrc;
     config.protected_media_ssrcs = flexfec_config_.protected_media_ssrcs;
     // RTCP messages and RTP header extensions apply to the entire track
     // in the SDP.
     config.transport_cc = config_.rtp.transport_cc;
-    config.extensions = config_.rtp.extensions;
+    config.rtp_header_extensions = config_.rtp.extensions;
     flexfec_stream_ = call_->CreateFlexfecReceiveStream(config);
     flexfec_stream_->Start();
   }
 }
 
 void WebRtcVideoChannel2::WebRtcVideoReceiveStream::ClearDecoders(
     std::vector<AllocatedDecoder>* allocated_decoders) {
   for (size_t i = 0; i < allocated_decoders->size(); ++i) {
     if ((*allocated_decoders)[i].external) {
       external_decoder_factory_->DestroyVideoDecoder(
@@ skipping 212 matching lines @@
         rtx_mapping[video_codecs[i].codec.id] !=
             ulpfec_config.red_payload_type) {
       video_codecs[i].rtx_payload_type = rtx_mapping[video_codecs[i].codec.id];
     }
   }
 
   return video_codecs;
 }
 
 }  // namespace cricket