Revert 198556 "Implement the rest of the audio API."

trunk/src/chromeos/audio/audio_devices_pref_handler.h

Index: trunk/src/chromeos/audio/audio_devices_pref_handler.h
===================================================================
--- trunk/src/chromeos/audio/audio_devices_pref_handler.h	(revision 198567)
+++ trunk/src/chromeos/audio/audio_devices_pref_handler.h	(working copy)
@@ -20,17 +20,15 @@
 class CHROMEOS_EXPORT AudioDevicesPrefHandler
     : public base::RefCountedThreadSafe<AudioDevicesPrefHandler> {
  public:
-  // Gets the audio output volume value from prefs for a device. Since we can
-  // only have either a gain or a volume for a device (depending on whether it
-  // is input or output), we don't really care which value it is.
-  virtual double GetVolumeGainValue(uint64 device_id) = 0;
-  // Sets the audio volume or gain value to prefs for a device.
-  virtual void SetVolumeGainValue(uint64 device_id, double value) = 0;
+  // Gets the audio output volume value from prefs for the active device.
+  virtual double GetOutputVolumeValue() = 0;
+  // Reads the audio output mute value from prefs for the active device.
+  virtual bool GetOutputMuteValue() = 0;
 
-  // Reads the audio mute value from prefs for a device.
-  virtual bool GetMuteValue(uint64 device_id) = 0;
-  // Sets the audio mute value to prefs for a device.
-  virtual void SetMuteValue(uint64 device_id, bool mute_on) = 0;
+  // Sets the output audio volume value to prefs for the active device.
+  virtual void SetOutputVolumeValue(double volume_percent) = 0;
+  // Sets the audio output mute value to prefs for the active device.
+  virtual void SetOutputMuteValue(bool mute_on) = 0;
 
   // Reads the audio capture allowed value from prefs.
   virtual bool GetAudioCaptureAllowedValue() = 0;