Add RemoteEstimatorProxy for capturing receive times

webrtc/modules/rtp_rtcp/source/rtcp_packet/transport_feedback.cc

 /*
  *  Copyright (c) 2015 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 286 matching lines @@
 }
 
 void TransportFeedback::WithPacketSenderSsrc(uint32_t ssrc) {
   packet_sender_ssrc_ = ssrc;
 }
 
 void TransportFeedback::WithMediaSourceSsrc(uint32_t ssrc) {
   media_source_ssrc_ = ssrc;
 }
 
+uint32_t TransportFeedback::GetPacketSenderSsrc() const {
+  return packet_sender_ssrc_;
+}
+
+uint32_t TransportFeedback::GetMediaSourceSsrc() const {
+  return media_source_ssrc_;
+}
 void TransportFeedback::WithBase(uint16_t base_sequence,
                                  int64_t ref_timestamp_us) {
   DCHECK_EQ(-1, base_seq_);
   DCHECK_NE(-1, ref_timestamp_us);
   base_seq_ = base_sequence;
   last_seq_ = base_sequence;
   base_time_ = ref_timestamp_us / kBaseScaleFactor;
   last_timestamp_ = base_time_ * kBaseScaleFactor;
 }
 
@@ skipping 472 matching lines @@
                        "RLE block of size " << rle_chunk->NumSymbols()
                     << " but only " << max_size << " left to read.";
     delete rle_chunk;
     return nullptr;
   }
   return rle_chunk;
 }
 
 }  // namespace rtcp
 }  // namespace webrtc