Using AudioOption to enable audio network adaptor.

webrtc/voice_engine/channel_proxy.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 196 matching lines @@
   RTC_DCHECK(thread_checker_.CalledOnValidThread());
   int error = channel()->SetChannelOutputVolumeScaling(scaling);
   RTC_DCHECK_EQ(0, error);
 }
 
 void ChannelProxy::SetRtcEventLog(RtcEventLog* event_log) {
   RTC_DCHECK(thread_checker_.CalledOnValidThread());
   channel()->SetRtcEventLog(event_log);
 }
 
+bool ChannelProxy::EnableAudioNetworkAdaptor(const std::string& config_string) {
+  RTC_DCHECK(thread_checker_.CalledOnValidThread());
+  return channel()->EnableAudioNetworkAdaptor(config_string);

[the sun, 2016/10/25 09:25:46]

AFAICT this call cannot fail (that would mean new() failed for
AudioNetworkAdaptorImpl). Please remove the return value in the ChannelProxy and
DCHECK the assumption instead. Preferably, you could also create a CL to
simplify things down the chain - I don't see how this settable
NetworkAdaptorCreator is ever used - only the default one seems to be used?

+}
+
+void ChannelProxy::DisableAudioNetworkAdaptor() {
+  RTC_DCHECK(thread_checker_.CalledOnValidThread());
+  channel()->DisableAudioNetworkAdaptor();
+}
+
+void ChannelProxy::SetReceiverFrameLengthRange(int min_frame_length_ms,
+                                               int max_frame_length_ms) {
+  RTC_DCHECK(thread_checker_.CalledOnValidThread());
+  channel()->SetReceiverFrameLengthRange(min_frame_length_ms,
+                                         max_frame_length_ms);
+}
+
 Channel* ChannelProxy::channel() const {
   RTC_DCHECK(channel_owner_.channel());
   return channel_owner_.channel();
 }
 
 }  // namespace voe
 }  // namespace webrtc