Add RemoteEstimatorProxy for capturing receive times

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 210 matching lines @@
   // requests.
   void SetStorePacketsStatus(bool enable, uint16_t number_to_store) override;
 
   bool StorePackets() const override;
 
   // Called on receipt of RTCP report block from remote side.
   void RegisterRtcpStatisticsCallback(
       RtcpStatisticsCallback* callback) override;
   RtcpStatisticsCallback* GetRtcpStatisticsCallback() override;
 
+  bool SendFeedbackPacket(const rtcp::TransportFeedback& packet) override;
   // (APP) Application specific data.
   int32_t SetRTCPApplicationSpecificData(uint8_t sub_type,
                                          uint32_t name,
                                          const uint8_t* data,
                                          uint16_t length) override;
 
   // (XR) VOIP metric.
   int32_t SetRTCPVoIPMetrics(const RTCPVoIPMetric* VoIPMetric) override;
 
   // (XR) Receiver reference time report.
@@ skipping 138 matching lines @@
   PacketLossStats receive_loss_stats_;
 
   // The processed RTT from RtcpRttStats.
   rtc::scoped_ptr<CriticalSectionWrapper> critical_section_rtt_;
   int64_t rtt_ms_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_RTCP_IMPL_H_