Enable transport seq num extension on receive channel to suppress log warning.

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 2905 matching lines @@
   }
   return 0;
 }
 
 void Channel::EnableSendTransportSequenceNumber(int id) {
   int ret =
       SetSendRtpHeaderExtension(true, kRtpExtensionTransportSequenceNumber, id);
   RTC_DCHECK_EQ(0, ret);
 }
 
+void Channel::EnableReceiveTransportSequenceNumber(int id) {
+  rtp_header_parser_->DeregisterRtpHeaderExtension(
+      kRtpExtensionTransportSequenceNumber);
+  bool ret = rtp_header_parser_->RegisterRtpHeaderExtension(
+      kRtpExtensionTransportSequenceNumber, id);
+  RTC_DCHECK(ret);
+}
+
 void Channel::SetCongestionControlObjects(
     RtpPacketSender* rtp_packet_sender,
     TransportFeedbackObserver* transport_feedback_observer,
     PacketRouter* packet_router) {
   RTC_DCHECK(packet_router != nullptr || packet_router_ != nullptr);
   if (transport_feedback_observer) {
     RTC_DCHECK(feedback_observer_proxy_.get());
     feedback_observer_proxy_->SetTransportFeedbackObserver(
         transport_feedback_observer);
   }
@@ skipping 1173 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