Set the start bitrate to the delay-based BWE.

webrtc/modules/congestion_controller/transport_feedback_adapter.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 56 matching lines @@
   }
   send_time_history_.AddAndRemoveOld(sequence_number, length, probe_cluster_id);
 }
 
 void TransportFeedbackAdapter::OnSentPacket(uint16_t sequence_number,
                                             int64_t send_time_ms) {
   rtc::CritScope cs(&lock_);
   send_time_history_.OnSentPacket(sequence_number, send_time_ms);
 }
 
+void TransportFeedbackAdapter::SetStartBitrate(int start_bitrate_bps) {
+  rtc::CritScope cs(&bwe_lock_);
+  delay_based_bwe_->SetStartBitrate(start_bitrate_bps);
+}
+
 void TransportFeedbackAdapter::SetMinBitrate(int min_bitrate_bps) {
   rtc::CritScope cs(&bwe_lock_);
   delay_based_bwe_->SetMinBitrate(min_bitrate_bps);
 }
 
 void TransportFeedbackAdapter::SetTransportOverhead(
     int transport_overhead_bytes_per_packet) {
   rtc::CritScope cs(&lock_);
   transport_overhead_bytes_per_packet_ = transport_overhead_bytes_per_packet;
 }
@@ skipping 70 matching lines @@
   return last_packet_feedback_vector_;
 }
 
 void TransportFeedbackAdapter::OnRttUpdate(int64_t avg_rtt_ms,
                                            int64_t max_rtt_ms) {
   rtc::CritScope cs(&bwe_lock_);
   delay_based_bwe_->OnRttUpdate(avg_rtt_ms, max_rtt_ms);
 }
 
 }  // namespace webrtc