Added protobuf message for loss-based BWE events, and wired it up to the send side bandwidth estima…

webrtc/modules/bitrate_controller/bitrate_controller_impl.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 111 matching lines @@
 }
 
 void BitrateControllerImpl::SetReservedBitrate(uint32_t reserved_bitrate_bps) {
   {
     rtc::CritScope cs(&critsect_);
     reserved_bitrate_bps_ = reserved_bitrate_bps;
   }
   MaybeTriggerOnNetworkChanged();
 }
 
+void BitrateControllerImpl::SetEventLog(RtcEventLog* event_log) {
+  rtc::CritScope cs(&critsect_);
+  bandwidth_estimation_.SetEventLog(event_log);
+}
+
 void BitrateControllerImpl::OnReceivedEstimatedBitrate(uint32_t bitrate) {
   {
     rtc::CritScope cs(&critsect_);
     bandwidth_estimation_.UpdateReceiverEstimate(clock_->TimeInMilliseconds(),
                                                  bitrate);
   }
   MaybeTriggerOnNetworkChanged();
 }
 
 int64_t BitrateControllerImpl::TimeUntilNextProcess() {
@@ skipping 70 matching lines @@
   bandwidth_estimation_.CurrentEstimate(&bitrate, &fraction_loss, &rtt);
   if (bitrate > 0) {
     bitrate = bitrate - std::min<int>(bitrate, reserved_bitrate_bps_);
     bitrate = std::max(bitrate, bandwidth_estimation_.GetMinBitrate());
     *bandwidth = bitrate;
     return true;
   }
   return false;
 }
 }  // namespace webrtc