Reland: mash: Convert TrayBackgroundView to wm common types

ash/system/tray/system_tray_bubble.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_TRAY_SYSTEM_TRAY_BUBBLE_H_
-#define ASH_SYSTEM_TRAY_SYSTEM_TRAY_BUBBLE_H_
-
-#include <memory>
-#include <vector>
-
-#include "ash/system/user/login_status.h"
-#include "base/macros.h"
-#include "base/timer/timer.h"
-#include "ui/views/bubble/tray_bubble_view.h"
-
-namespace ash {
-class SystemTray;
-class SystemTrayItem;
-
-class SystemTrayBubble {
- public:
-  enum BubbleType {
-    BUBBLE_TYPE_DEFAULT,
-    BUBBLE_TYPE_DETAILED,
-    BUBBLE_TYPE_NOTIFICATION
-  };
-
-  SystemTrayBubble(ash::SystemTray* tray,
-                   const std::vector<ash::SystemTrayItem*>& items,
-                   BubbleType bubble_type);
-  virtual ~SystemTrayBubble();
-
-  // Change the items displayed in the bubble.
-  void UpdateView(const std::vector<ash::SystemTrayItem*>& items,
-                  BubbleType bubble_type);
-
-  // Creates |bubble_view_| and a child views for each member of |items_|.
-  // Also creates |bubble_wrapper_|. |init_params| may be modified.
-  void InitView(views::View* anchor,
-                LoginStatus login_status,
-                views::TrayBubbleView::InitParams* init_params);
-
-  // Focus the default item if no item is focused. Othewise, do nothing.
-  void FocusDefaultIfNeeded();
-
-  BubbleType bubble_type() const { return bubble_type_; }
-  views::TrayBubbleView* bubble_view() const { return bubble_view_; }
-
-  void DestroyItemViews();
-  void BubbleViewDestroyed();
-  void StartAutoCloseTimer(int seconds);
-  void StopAutoCloseTimer();
-  void RestartAutoCloseTimer();
-  void Close();
-  void SetVisible(bool is_visible);
-  bool IsVisible();
-
-  // Returns true if any of the SystemTrayItems return true from
-  // ShouldShowShelf().
-  bool ShouldShowShelf() const;
-
- private:
-  void CreateItemViews(LoginStatus login_status);
-
-  ash::SystemTray* tray_;
-  views::TrayBubbleView* bubble_view_;
-  std::vector<ash::SystemTrayItem*> items_;
-  BubbleType bubble_type_;
-
-  int autoclose_delay_;
-  base::OneShotTimer autoclose_;
-
-  DISALLOW_COPY_AND_ASSIGN(SystemTrayBubble);
-};
-
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_BUBBLE_H_