mash: Move //ash/system/date to //ash/common

ash/system/date/date_default_view.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_DATE_DATE_DEFAULT_VIEW_H_
-#define ASH_SYSTEM_DATE_DATE_DEFAULT_VIEW_H_
-
-#include "ash/ash_export.h"
-#include "ash/common/login_status.h"
-#include "ash/system/chromeos/shutdown_policy_observer.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "ui/views/controls/button/button.h"
-#include "ui/views/view.h"
-
-namespace ash {
-namespace tray {
-class DateView;
-}  // namespace tray
-
-class TrayPopupHeaderButton;
-
-// The system tray bubble view with the date and buttons for help, lock and
-// shutdown.
-class ASH_EXPORT DateDefaultView : public views::View,
-                                   public views::ButtonListener,
-                                   public ash::ShutdownPolicyObserver {
- public:
-  explicit DateDefaultView(LoginStatus login);
-
-  ~DateDefaultView() override;
-
-  views::View* GetHelpButtonView();
-  const views::View* GetShutdownButtonViewForTest() const;
-
-  tray::DateView* GetDateView();
-  const tray::DateView* GetDateView() const;
-
-  // ash::ShutdownPolicyObserver:
-  void OnShutdownPolicyChanged(bool reboot_on_shutdown) override;
-
- private:
-  // Overridden from views::ButtonListener.
-  void ButtonPressed(views::Button* sender, const ui::Event& event) override;
-
-  TrayPopupHeaderButton* help_button_;
-  TrayPopupHeaderButton* shutdown_button_;
-  TrayPopupHeaderButton* lock_button_;
-  tray::DateView* date_view_;
-
-  base::WeakPtrFactory<DateDefaultView> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(DateDefaultView);
-};
-
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_DATE_DATE_DEFAULT_VIEW_H_