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

webrtc/audio/audio_send_stream_unittest.cc

Index: webrtc/audio/audio_send_stream_unittest.cc
diff --git a/webrtc/audio/audio_send_stream_unittest.cc b/webrtc/audio/audio_send_stream_unittest.cc
index 466c1571acd0af6091abfded1fb04ab0c8a25b9b..a01ef025d3be84a85f30aa5cec0d225b7608bc89 100644
--- a/webrtc/audio/audio_send_stream_unittest.cc
+++ b/webrtc/audio/audio_send_stream_unittest.cc
@@ -83,13 +83,12 @@ struct ConfigHelper {
                                            kTransportSequenceNumberId))
               .Times(1);
           EXPECT_CALL(*channel_proxy_,
-                      SetCongestionControlObjects(
+                      RegisterSenderCongestionControlObjects(
                           congestion_controller_.pacer(),
                           congestion_controller_.GetTransportFeedbackObserver(),
                           congestion_controller_.packet_router()))
               .Times(1);
-          EXPECT_CALL(*channel_proxy_,
-                      SetCongestionControlObjects(nullptr, nullptr, nullptr))
+          EXPECT_CALL(*channel_proxy_, ResetCongestionControlObjects())
               .Times(1);
           return channel_proxy_;
         }));