Initial implementation of RtpTransportControllerReceive and related interfaces.

webrtc/call/flexfec_receive_stream_impl.cc

Index: webrtc/call/flexfec_receive_stream_impl.cc
diff --git a/webrtc/call/flexfec_receive_stream_impl.cc b/webrtc/call/flexfec_receive_stream_impl.cc
index f01043349892574f5d240cacd27583173c68ad71..28de0824e4bdce1e26c3a689e13159e112a98aa7 100644
--- a/webrtc/call/flexfec_receive_stream_impl.cc
+++ b/webrtc/call/flexfec_receive_stream_impl.cc
@@ -127,6 +127,7 @@ FlexfecReceiveStreamImpl::FlexfecReceiveStreamImpl(
     RtcpRttStats* rtt_stats,
     ProcessThread* process_thread)
     : config_(config),
+      rtp_header_extensions_(config.rtp_header_extensions),
       started_(false),
       receiver_(MaybeCreateFlexfecReceiver(config_, recovered_packet_receiver)),
       rtp_receive_statistics_(
@@ -149,6 +150,12 @@ FlexfecReceiveStreamImpl::~FlexfecReceiveStreamImpl() {
   process_thread_->DeRegisterModule(rtp_rtcp_.get());
 }
 
+bool FlexfecReceiveStreamImpl::OnRtpPacketReceive(RtpPacketReceived* packet) {
+  packet->IdentifyExtensions(rtp_header_extensions_);
+  OnRtpPacket(*packet);
+  return true;

[pthatcher1, 2017/04/29 00:58:46]

Why does FlexfecReceiveStreamImpl have to know about header extensions?  Why is
that not done before being passed in?

+}
+
 void FlexfecReceiveStreamImpl::OnRtpPacket(const RtpPacketReceived& packet) {
   {
     rtc::CritScope cs(&crit_);