Moving device description utils from AudioManager[Base] into AudioDeviceDescription; to be shared b…

media/audio/audio_device_name.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_DEVICE_NAME_H_
 #define MEDIA_AUDIO_AUDIO_DEVICE_NAME_H_
 
 #include <list>
 #include <string>
 #include "media/base/media_export.h"
 
 namespace media {
 
 struct MEDIA_EXPORT AudioDeviceName {
   AudioDeviceName();
   AudioDeviceName(const std::string& device_name,
                   const std::string& unique_id);
 
+  // Creates default device representation.
+  static AudioDeviceName CreateDefault();
+
+  // Creates communications device representation.
+  static AudioDeviceName CreateCommunications();
+
   std::string device_name;  // Friendly name of the device.
   std::string unique_id;    // Unique identifier for the device.
 };
 
 typedef std::list<AudioDeviceName> AudioDeviceNames;
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_DEVICE_NAME_H_