Decoupling audio_device from Obj-C code

webrtc/sdk/objc/Framework/Headers/WebRTC/RTCAudioSession.h

 /*
  *  Copyright 2016 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.
  */
 
 #import <AVFoundation/AVFoundation.h>
 #import <Foundation/Foundation.h>
 
-#import "WebRTC/RTCMacros.h"
+#import "webrtc/sdk/objc/Framework/Headers/WebRTC/RTCMacros.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
 extern NSString * const kRTCAudioSessionErrorDomain;
 /** Method that requires lock was called without lock. */
 extern NSInteger const kRTCAudioSessionErrorLockRequired;
 /** Unknown configuration error occurred. */
 extern NSInteger const kRTCAudioSessionErrorConfiguration;
 
 @class RTCAudioSession;
@@ skipping 214 matching lines @@
 /** Convenience method that calls both setConfiguration and setActive.
  *  |lockForConfiguration| must be called first.
  */
 - (BOOL)setConfiguration:(RTCAudioSessionConfiguration *)configuration
                   active:(BOOL)active
                    error:(NSError **)outError;
 
 @end
 
 NS_ASSUME_NONNULL_END