Enabling rtcp-rsize negotiation and fixing some issues with it.

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.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 479 matching lines @@
   return rtp_sender_.SetMaxPayloadLength(length, packet_overhead_);
 }
 
 int32_t ModuleRtpRtcpImpl::SetMaxTransferUnit(const uint16_t mtu) {
   RTC_DCHECK_LE(mtu, IP_PACKET_SIZE) << "Invalid mtu: " << mtu;
   return rtp_sender_.SetMaxPayloadLength(mtu - packet_overhead_,
                                          packet_overhead_);
 }
 
 RtcpMode ModuleRtpRtcpImpl::RTCP() const {
-  if (rtcp_sender_.Status() != RtcpMode::kOff) {
-    return rtcp_receiver_.Status();
-  }
-  return RtcpMode::kOff;
+  return rtcp_sender_.Status();
 }
 
 // Configure RTCP status i.e on/off.
 void ModuleRtpRtcpImpl::SetRTCPStatus(const RtcpMode method) {
   rtcp_sender_.SetRTCPStatus(method);
-  rtcp_receiver_.SetRTCPStatus(method);
 }
 
 int32_t ModuleRtpRtcpImpl::SetCNAME(const char* c_name) {
   return rtcp_sender_.SetCNAME(c_name);
 }
 
 int32_t ModuleRtpRtcpImpl::AddMixedCNAME(uint32_t ssrc, const char* c_name) {
   return rtcp_sender_.AddMixedCNAME(ssrc, c_name);
 }
 
@@ skipping 476 matching lines @@
 void ModuleRtpRtcpImpl::RegisterSendChannelRtpStatisticsCallback(
     StreamDataCountersCallback* callback) {
   rtp_sender_.RegisterRtpStatisticsCallback(callback);
 }
 
 StreamDataCountersCallback*
     ModuleRtpRtcpImpl::GetSendChannelRtpStatisticsCallback() const {
   return rtp_sender_.GetRtpStatisticsCallback();
 }
 }  // namespace webrtc