Attach TransportFeedbackPacketLossTracker to ANA (PLR only)

webrtc/modules/congestion_controller/congestion_controller.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 236 matching lines @@
   } else {
     return &remote_bitrate_estimator_;
   }
 }
 
 TransportFeedbackObserver*
 CongestionController::GetTransportFeedbackObserver() {
   return &transport_feedback_adapter_;
 }
 
+void CongestionController::RegisterTransportFeedbackAdapterObserver(
+    TransportFeedbackAdapterObserver* observer) {
+  transport_feedback_adapter_.RegisterTransportFeedbackAdapterObserver(
+    observer);
+}
+
+void CongestionController::DeRegisterTransportFeedbackAdapterObserver(
+    TransportFeedbackAdapterObserver* observer) {
+  transport_feedback_adapter_.DeRegisterTransportFeedbackAdapterObserver(
+    observer);
+}
+
 RateLimiter* CongestionController::GetRetransmissionRateLimiter() {
   return retransmission_rate_limiter_.get();
 }
 
 void CongestionController::EnablePeriodicAlrProbing(bool enable) {
   probe_controller_->EnablePeriodicAlrProbing(enable);
 }
 
 void CongestionController::SetAllocatedSendBitrateLimits(
     int min_send_bitrate_bps,
@@ skipping 102 matching lines @@
 bool CongestionController::IsSendQueueFull() const {
   return pacer_->ExpectedQueueTimeMs() > PacedSender::kMaxQueueLengthMs;
 }
 
 bool CongestionController::IsNetworkDown() const {
   rtc::CritScope cs(&critsect_);
   return network_state_ == kNetworkDown;
 }
 
 }  // namespace webrtc