mash: Move several chromeos system tray items to //ash/common

ash/system/chromeos/tray_caps_lock.h

-// Copyright (c) 2012 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_CHROMEOS_TRAY_CAPS_LOCK_H_
-#define ASH_SYSTEM_CHROMEOS_TRAY_CAPS_LOCK_H_
-
-#include "ash/common/system/tray/tray_image_item.h"
-#include "base/macros.h"
-#include "ui/base/ime/chromeos/ime_keyboard.h"
-#include "ui/events/event_handler.h"
-
-namespace views {
-class ImageView;
-class View;
-}
-
-namespace ash {
-class CapsLockDefaultView;
-
-class TrayCapsLock : public TrayImageItem,
-                     public chromeos::input_method::ImeKeyboard::Observer {
- public:
-  explicit TrayCapsLock(SystemTray* system_tray);
-  ~TrayCapsLock() override;
-
- private:
-  // Overriden from chromeos::input_method::ImeKeyboard::Observer:
-  void OnCapsLockChanged(bool enabled) override;
-
-  // Overridden from TrayImageItem.
-  bool GetInitialVisibility() override;
-  views::View* CreateDefaultView(LoginStatus status) override;
-  views::View* CreateDetailedView(LoginStatus status) override;
-  void DestroyDefaultView() override;
-  void DestroyDetailedView() override;
-
-  CapsLockDefaultView* default_;
-  views::View* detailed_;
-
-  bool caps_lock_enabled_;
-  bool message_shown_;
-
-  DISALLOW_COPY_AND_ASSIGN(TrayCapsLock);
-};
-
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_CHROMEOS_TRAY_CAPS_LOCK_H_