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

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc

Index: webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
index ef720bef524cf7ab8108d189a6cbb3795605a885..581aa5111a1dcd5882377ba3a1c217ccfbf95074 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
@@ -497,16 +497,12 @@ int32_t ModuleRtpRtcpImpl::SetMaxTransferUnit(const uint16_t mtu) {
 }
 
 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) {