Add sender controlled playout delay limits

webrtc/voice_engine/channel.cc

Index: webrtc/voice_engine/channel.cc
diff --git a/webrtc/voice_engine/channel.cc b/webrtc/voice_engine/channel.cc
index c2b95420537f4763893d1d5cea4d188240e9d527..ed41f472ffd22b5c77bdd3e8ae4c496dbdc4377b 100644
--- a/webrtc/voice_engine/channel.cc
+++ b/webrtc/voice_engine/channel.cc
@@ -2536,6 +2536,18 @@ int Channel::SetReceiveAbsoluteSenderTimeStatus(bool enable, unsigned char id) {
   return 0;
 }
 
+void Channel::EnableSendPlayoutDelayLimit(int id) {
+  int ret = _rtpRtcpModule->RegisterSendRtpHeaderExtension(
+      kRtpExtensionPlayoutDelay, id);
+  RTC_DCHECK_EQ(0, ret);
+}
+
+void Channel::EnableReceivePlayoutDelayLimit(int id) {
+  bool ret = rtp_header_parser_->RegisterRtpHeaderExtension(
+      kRtpExtensionPlayoutDelay, id);
+  RTC_DCHECK(ret);
+}
+
 void Channel::EnableSendTransportSequenceNumber(int id) {
   int ret =
       SetSendRtpHeaderExtension(true, kRtpExtensionTransportSequenceNumber, id);