mash: Migrate tray audio and deps to common.

ash/system/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_SYSTEM_AUDIO_TRAY_AUDIO_H_
-#define ASH_SYSTEM_AUDIO_TRAY_AUDIO_H_
-
-#include <stdint.h>
-
-#include <memory>
-
-#include "ash/common/system/tray/tray_image_item.h"
-#include "ash/system/audio/audio_observer.h"
-#include "base/macros.h"
-#include "ui/display/display_observer.h"
-
-namespace ash {
-
-namespace system {
-class TrayAudioDelegate;
-}
-
-namespace tray {
-class VolumeView;
-}
-
-class TrayAudio : public TrayImageItem,
-                  public AudioObserver,
-                  public display::DisplayObserver {
- public:
-  TrayAudio(SystemTray* system_tray,
-            std::unique_ptr<system::TrayAudioDelegate> audio_delegate);
-  ~TrayAudio() override;
-
-  static bool ShowAudioDeviceMenu();
-
- protected:
-  // Overridden from display::DisplayObserver.
-  void OnDisplayAdded(const display::Display& new_display) override;
-  void OnDisplayRemoved(const display::Display& old_display) override;
-  void OnDisplayMetricsChanged(const display::Display& display,
-                               uint32_t changed_metrics) override;
-
-  virtual void Update();
-
-  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_;
-
- private:
-  // Overridden from TrayImageItem.
-  bool GetInitialVisibility() override;
-
-  // Overridden from SystemTrayItem.
-  views::View* CreateDefaultView(LoginStatus status) override;
-  views::View* CreateDetailedView(LoginStatus status) override;
-  void DestroyDefaultView() override;
-  void DestroyDetailedView() override;
-  bool ShouldHideArrow() const override;
-  bool ShouldShowShelf() const override;
-
-  // Overridden from AudioObserver.
-  void OnOutputNodeVolumeChanged(uint64_t node_id, double volume) override;
-  void OnOutputMuteChanged(bool mute_on, bool system_adjust) override;
-  void OnAudioNodesChanged() override;
-  void OnActiveOutputNodeChanged() override;
-  void OnActiveInputNodeChanged() override;
-
-  void ChangeInternalSpeakerChannelMode();
-
-  DISALLOW_COPY_AND_ASSIGN(TrayAudio);
-};
-
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_AUDIO_TRAY_AUDIO_H_