Adding GetAudioInputDeviceNames to AudioManager, this function is supposed to do device enumerati...

media/audio/audio_manager_base.h

 // Copyright (c) 2010 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_BASE_H_
 #define MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_
 
 #include <map>
 
 #include "base/threading/thread.h"
 #include "media/audio/audio_manager.h"
 
 class AudioOutputDispatcher;
 
 // AudioManagerBase provides AudioManager functions common for all platforms.
 class AudioManagerBase : public AudioManager {
  public:
+  // Name of the generic "default" device.
+  static const char kDefaultDeviceName[];
+
   AudioManagerBase();
 
   virtual void Init();
   virtual void Cleanup();
 
   virtual MessageLoop* GetMessageLoop();
 
   virtual string16 GetAudioInputDeviceModel();
 
   virtual bool CanShowAudioInputSettings();
   virtual void ShowAudioInputSettings();
 
+  virtual void GetAudioInputDeviceNames(media::AudioDeviceNames* device_names);
+
   virtual AudioOutputStream* MakeAudioOutputStreamProxy(
       const AudioParameters& params);
 
  protected:
   virtual ~AudioManagerBase();
 
   typedef std::map<AudioParameters, scoped_refptr<AudioOutputDispatcher>,
                    AudioParameters::Compare>
       AudioOutputDispatchersMap;
 
   bool initialized() { return initialized_; }
 
   // Thread used to interact with AudioOutputStreams created by this
   // audio manger.
   base::Thread audio_thread_;
 
   bool initialized_;
 
   AudioOutputDispatchersMap output_dispatchers_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioManagerBase);
 };
 
 #endif  // MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_