Now pass ADM as a constructor argument to audio_state.

webrtc/api/call/audio_state.h

 /*
  *  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.
  */
 #ifndef WEBRTC_API_CALL_AUDIO_STATE_H_
@@ skipping 16 matching lines @@
 // webrtc::Call for audio processing purposes.
 class AudioState : public rtc::RefCountInterface {
  public:
   struct Config {
     // VoiceEngine used for audio streams and audio/video synchronization.
     // AudioState will tickle the VoE refcount to keep it alive for as long as
     // the AudioState itself.
     VoiceEngine* voice_engine = nullptr;
 
     // The AudioDeviceModule associated with the Calls.
     AudioDeviceModule* audio_device_module = nullptr;

[the sun, 2016/09/29 16:15:07]

Look at me!

   };
 
   // TODO(solenberg): Replace scoped_refptr with shared_ptr once we can use it.
-  static rtc::scoped_refptr<AudioState> Create(
-      const AudioState::Config& config);
+  static rtc::scoped_refptr<AudioState> Create(const AudioState::Config& config,
+                                               webrtc::AudioDeviceModule* adm);

[the sun, 2016/09/29 16:15:07]

Can you use the one in Config instead?

 
   virtual ~AudioState() {}
 };
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_CALL_AUDIO_STATE_H_