Revert of mash: Convert TrayBackgroundView to wm common types

ash/system/tray/system_tray_bubble.h

Index: ash/system/tray/system_tray_bubble.h
diff --git a/ash/system/tray/system_tray_bubble.h b/ash/system/tray/system_tray_bubble.h
new file mode 100644
index 0000000000000000000000000000000000000000..31bb500252b40783edea2d8d00a3ad3eafbc76b0
--- /dev/null
+++ b/ash/system/tray/system_tray_bubble.h
@@ -0,0 +1,78 @@
+// 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_