Wire up transport sequence number / send time callbacks to webrtc via libjingle.

webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.h

Index: webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.h
diff --git a/webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.h b/webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.h
index 56b2c73873d343108bd99bc4edf5d454f7c66989..5b8f3d5e682374e20d890b466905d79a8e62c7b1 100644
--- a/webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.h
+++ b/webrtc/modules/remote_bitrate_estimator/transport_feedback_adapter.h
@@ -35,6 +35,8 @@ class TransportFeedbackAdapter : public TransportFeedbackObserver,
 
   void OnPacketSent(const PacketInfo& info) override;
 
+  void UpdateSendTime(uint16_t sequence_number, int64_t send_time_ms);
+
   void OnTransportFeedback(const rtcp::TransportFeedback& feedback) override;
 
   void SetBitrateEstimator(RemoteBitrateEstimator* rbe);