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 db3db1884d77fb9f01d74e99d588d45c53c30631..01fbd186d8e7ba49ef5c4418654299aa1217be53 100644
--- a/webrtc/media/engine/fakewebrtccall.h
+++ b/webrtc/media/engine/fakewebrtccall.h
@@ -243,6 +243,9 @@ 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 SignalTransportOverheadChange(
+      webrtc::MediaType media,
+      int transport_overhead_per_packet) override;
   void OnSentPacket(const rtc::SentPacket& sent_packet) override;
 
   webrtc::Call::Config config_;
@@ -258,6 +261,9 @@ 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