Link things together and enable the device selection for linux and mac.

media/audio/audio_manager.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_AUDIO_AUDIO_MANAGER_H_
 #define MEDIA_AUDIO_AUDIO_MANAGER_H_
 
 #include "base/basictypes.h"
 #include "base/string16.h"
 #include "base/task.h"
@@ skipping 75 matching lines @@
   // |bits_per_sample| can be any value supported by the platform.
   // |samples_per_packet| is in hertz as well and can be 0 to |sample_rate|,
   // with 0 suggesting that the implementation use a default value for that
   // platform.
   // Returns NULL if the combination of the parameters is not supported, or if
   // we have reached some other platform specific limit.
   //
   // Do not free the returned AudioInputStream. It is owned by AudioManager.
   // When you are done with it, call |Stop()| and |Close()| to release it.
   virtual AudioInputStream* MakeAudioInputStream(
-      const AudioParameters& params) = 0;
+      const AudioParameters& params, const std::string& device_id) = 0;
 
   // Muting continues playback but effectively the volume is set to zero.
   // Un-muting returns the volume to the previous level.
   virtual void MuteAll() = 0;
   virtual void UnMuteAll() = 0;
 
   // Used to determine if something else is currently making use of audio input.
   virtual bool IsRecordingInProcess() = 0;
 
   // Returns message loop used for audio IO.
@@ skipping 15 matching lines @@
  private:
   static void Destroy(void*);
 
   // Called by GetAudioManager() to create platform-specific audio manager.
   static AudioManager* CreateAudioManager();
 };
 
 DISABLE_RUNNABLE_METHOD_REFCOUNT(AudioManager);
 
 #endif  // MEDIA_AUDIO_AUDIO_MANAGER_H_