Use separate rtp module lists for send and receive in PacketRouter.

webrtc/voice_engine/channel.h

Index: webrtc/voice_engine/channel.h
diff --git a/webrtc/voice_engine/channel.h b/webrtc/voice_engine/channel.h
index 3a4383ffd1e48003cb2144de8d10567c2d2cda01..da688a47939435104487c06edacab03e976149b0 100644
--- a/webrtc/voice_engine/channel.h
+++ b/webrtc/voice_engine/channel.h
@@ -329,10 +329,12 @@ public:
     void EnableSendTransportSequenceNumber(int id);
     void EnableReceiveTransportSequenceNumber(int id);
 
-    void SetCongestionControlObjects(
+    void RegisterSenderCongestionControlObjects(
         RtpPacketSender* rtp_packet_sender,
         TransportFeedbackObserver* transport_feedback_observer,
         PacketRouter* packet_router);
+    void RegisterReceiverCongestionControlObjects(PacketRouter* packet_router);
+    void ResetCongestionControlObjects();
 
     void SetRTCPStatus(bool enable);
     int GetRTCPStatus(bool& enabled);