Attach TransportFeedbackPacketLossTracker to ANA (PLR only)

webrtc/modules/rtp_rtcp/source/rtp_sender.cc

 /*
  *  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 1242 matching lines @@
 void RTPSender::AddPacketToTransportFeedback(
     uint16_t packet_id,
     const RtpPacketToSend& packet,
     const PacedPacketInfo& pacing_info) {
   size_t packet_size = packet.payload_size() + packet.padding_size();
   if (send_side_bwe_with_overhead_) {
     packet_size = packet.size();
   }
 
   if (transport_feedback_observer_) {
-    transport_feedback_observer_->AddPacket(packet_id, packet_size,
+    uint32_t ssrc;
+    {
+      rtc::CritScope lock(&send_critsect_);
+      ssrc = *ssrc_;
+    }
+    transport_feedback_observer_->AddPacket(ssrc, packet_id, packet_size,
                                             pacing_info);
   }
 }
 
 void RTPSender::UpdateRtpOverhead(const RtpPacketToSend& packet) {
   if (!overhead_observer_)
     return;
   size_t overhead_bytes_per_packet;
   {
     rtc::CritScope lock(&send_critsect_);
     if (rtp_overhead_bytes_per_packet_ == packet.headers_size()) {
       return;
     }
     rtp_overhead_bytes_per_packet_ = packet.headers_size();
     overhead_bytes_per_packet = rtp_overhead_bytes_per_packet_;
   }
   overhead_observer_->OnOverheadChanged(overhead_bytes_per_packet);
 }
 
 }  // namespace webrtc