Remove TrayAudioDelegate

ash/common/system/chromeos/audio/tray_audio.h

 // 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_COMMON_SYSTEM_CHROMEOS_AUDIO_TRAY_AUDIO_H_
 #define ASH_COMMON_SYSTEM_CHROMEOS_AUDIO_TRAY_AUDIO_H_
 
 #include <stdint.h>
 
-#include <memory>
-
 #include "ash/ash_export.h"
 #include "ash/common/system/tray/tray_image_item.h"
 #include "base/macros.h"
 #include "chromeos/audio/cras_audio_handler.h"
 #include "chromeos/dbus/power_manager_client.h"
 #include "ui/display/display_observer.h"
 
 namespace ash {
 
-namespace system {
-class TrayAudioDelegate;
-}
-
 namespace tray {
 class AudioDetailedView;
 class VolumeView;
 }
 
 // The system tray item for audio input and output.
 class ASH_EXPORT TrayAudio : public TrayImageItem,
                              public chromeos::CrasAudioHandler::AudioObserver,
                              public display::DisplayObserver,
                              public chromeos::PowerManagerClient::Observer {
@@ skipping 34 matching lines @@
 
   // Overridden from chromeos::PowerManagerClient::Observer.
   void SuspendDone(const base::TimeDelta& sleep_duration) override;
 
   // Swaps the left and right channels on yoga devices based on orientation.
   void ChangeInternalSpeakerChannelMode();
 
   // Updates the UI views.
   void Update();
 
-  // TODO(jamescook): Remove this delegate and inline all the code.
-  std::unique_ptr<system::TrayAudioDelegate> audio_delegate_;
   tray::VolumeView* volume_view_;
 
   // True if VolumeView should be created for accelerator pop up;
   // Otherwise, it should be created for detailed view in ash tray bubble.
   bool pop_up_volume_view_;
 
   tray::AudioDetailedView* audio_detail_view_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayAudio);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_CHROMEOS_AUDIO_TRAY_AUDIO_H_