Set actual transport overhead in rtp_rtcp

webrtc/voice_engine/channel.cc

 /*
  *  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 2826 matching lines @@
     // Channel ID, disassociate with it.
     ChannelOwner ref(NULL);
     associate_send_channel_ = ref;
   }
 }
 
 void Channel::SetRtcEventLog(RtcEventLog* event_log) {
   event_log_proxy_->SetEventLog(event_log);
 }
 
+void Channel::SetTransportOverhead(int transport_overhead_per_packet_byte) {
+  _rtpRtcpModule->SetTransportOverhead(transport_overhead_per_packet_byte);

[the sun, 2016/10/20 08:56:46]

Either remove the return value of RtpRtcp::SetTransportOverhead(), or DCHECK the
result is always true here

[michaelt, 2016/10/20 09:38:05]

I remove the return value of the function.

+}
+
 int Channel::RegisterExternalMediaProcessing(ProcessingTypes type,
                                              VoEMediaProcess& processObject) {
   WEBRTC_TRACE(kTraceInfo, kTraceVoice, VoEId(_instanceId, _channelId),
                "Channel::RegisterExternalMediaProcessing()");
 
   rtc::CritScope cs(&_callbackCritSect);
 
   if (kPlaybackPerChannel == type) {
     if (_outputExternalMediaCallbackPtr) {
       _engineStatisticsPtr->SetLastError(
@@ skipping 387 matching lines @@
   int64_t min_rtt = 0;
   if (_rtpRtcpModule->RTT(remoteSSRC, &rtt, &avg_rtt, &min_rtt, &max_rtt) !=
       0) {
     return 0;
   }
   return rtt;
 }
 
 }  // namespace voe
 }  // namespace webrtc