Revert 251959 "Refactor the TrayAudio code so that it can be use..."

trunk/src/ash/system/audio/tray_audio_delegate.h

Index: trunk/src/ash/system/audio/tray_audio_delegate.h
===================================================================
--- trunk/src/ash/system/audio/tray_audio_delegate.h	(revision 252005)
+++ trunk/src/ash/system/audio/tray_audio_delegate.h	(working copy)
@@ -1,48 +0,0 @@
-// Copyright 2014 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 ASH_SYSTEM_AUDIO_TRAY_AUDIO_DELEGATE_H_
-#define ASH_SYSTEM_AUDIO_TRAY_AUDIO_DELEGATE_H_
-
-namespace ash {
-namespace system {
-
-class TrayAudioDelegate {
- public:
-
-  enum { kNoAudioDeviceIcon = -1 };
-
-  virtual ~TrayAudioDelegate() {}
-
-  // Sets the volume level of the output device to the minimum level which is
-  // deemed to be audible.
-  virtual void AdjustOutputVolumeToAudibleLevel() = 0;
-
-  // Gets the default level in the range 0%-100% at which the output device
-  // should be muted.
-  virtual int GetOutputDefaultVolumeMuteLevel() = 0;
-
-  // Gets the icon to use for the active output device.
-  virtual int GetActiveOutputDeviceIconId() = 0;
-
-  // Returns the volume level of the output device in the range 0%-100%.
-  virtual int GetOutputVolumeLevel() = 0;
-
-  // Returns true if the device has alternative inputs or outputs.
-  virtual bool HasAlternativeSources() = 0;
-
-  // Returns whether the output volume is muted.
-  virtual bool IsOutputAudioMuted() = 0;
-
-  // Sets the mute state of the output device.
-  virtual void SetOutputAudioIsMuted(bool is_muted) = 0;
-
-  // Sets the volume level of the output device in the range 0%-100%
-  virtual void SetOutputVolumeLevel(int level) = 0;
-};
-
-}  // namespace system
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_AUDIO_TRAY_AUDIO_DELEGATE_H_