Set actual transport overhead in rtp_rtcp

webrtc/media/engine/fakewebrtccall.h

Index: webrtc/media/engine/fakewebrtccall.h
diff --git a/webrtc/media/engine/fakewebrtccall.h b/webrtc/media/engine/fakewebrtccall.h
index 59084fc4c8fabdaf5961acbfb6a3d44703b4ceba..7ff80ce0cc194fa268b95bb541564d35d2e6f268 100644
--- a/webrtc/media/engine/fakewebrtccall.h
+++ b/webrtc/media/engine/fakewebrtccall.h
@@ -262,6 +262,8 @@ class FakeCall final : public webrtc::Call, public webrtc::PacketReceiver {
                              const rtc::NetworkRoute& network_route) override {}
   void SignalChannelNetworkState(webrtc::MediaType media,
                                  webrtc::NetworkState state) override;
+  void OnTransportOverheadChanged(webrtc::MediaType media,
+                                  int transport_overhead_per_packet) override;
   void OnSentPacket(const rtc::SentPacket& sent_packet) override;
 
   webrtc::Call::Config config_;
@@ -277,6 +279,9 @@ class FakeCall final : public webrtc::Call, public webrtc::PacketReceiver {
 
   int num_created_send_streams_;
   int num_created_receive_streams_;
+
+  int audio_transport_overhead_;
+  int video_transport_overhead_;
 };
 
 }  // namespace cricket