Add send-side BWE to WebRtcVoiceEngine under a finch experiment.

webrtc/call/rampup_tests.cc

 /*
  *  Copyright (c) 2013 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 182 matching lines @@
     transport_cc = false;
     send_config->rtp.extensions.push_back(
         RtpExtension(extension_type_.c_str(), kAbsSendTimeExtensionId));
   } else if (extension_type_ == RtpExtension::kTransportSequenceNumber) {
     transport_cc = true;
     send_config->rtp.extensions.push_back(RtpExtension(
         extension_type_.c_str(), kTransportSequenceNumberExtensionId));
   }
 
   for (AudioReceiveStream::Config& recv_config : *receive_configs) {
-    recv_config.combined_audio_video_bwe = true;
     recv_config.rtp.transport_cc = transport_cc;
     recv_config.rtp.extensions = send_config->rtp.extensions;
     recv_config.rtp.remote_ssrc = send_config->rtp.ssrc;
   }
 }
 
 void RampUpTester::OnCallsCreated(Call* sender_call, Call* receiver_call) {
   sender_call_ = sender_call;
 }
 
@@ skipping 364 matching lines @@
                     true);
   RunBaseTest(&test);
 }
 
 TEST_F(RampUpTest, TransportSequenceNumberSingleStreamWithHighStartBitrate) {
   RampUpTester test(1, 0, 0.9 * kSingleStreamTargetBps,
                     RtpExtension::kTransportSequenceNumber, false, false);
   RunBaseTest(&test);
 }
 }  // namespace webrtc