Convert //ash from scoped_ptr to std::unique_ptr

ash/system/tray/system_tray.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_H_
 #define ASH_SYSTEM_TRAY_SYSTEM_TRAY_H_
 
+#include <map>
+#include <memory>
+#include <vector>
+
 #include "ash/ash_export.h"
 #include "ash/system/cast/tray_cast.h"
 #include "ash/system/tray/system_tray_bubble.h"
 #include "ash/system/tray/tray_background_view.h"
 #include "ash/system/user/login_status.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "ui/views/bubble/tray_bubble_view.h"
 #include "ui/views/view.h"
 
-#include <map>
-#include <vector>
-
 namespace ash {
 class ScreenTrayItem;
 class SystemBubbleWrapper;
 class SystemTrayDelegate;
 class SystemTrayItem;
 class TrayAccessibility;
 class TrayDate;
 class TrayUser;
 
 // There are different methods for creating bubble views.
@@ skipping 177 matching lines @@
   ScopedVector<SystemTrayItem> items_;
 
   // Pointers to members of |items_|.
   SystemTrayItem* detailed_item_;
   std::vector<SystemTrayItem*> notification_items_;
 
   // Mappings of system tray item and it's view in the tray.
   std::map<SystemTrayItem*, views::View*> tray_item_map_;
 
   // Bubble for default and detailed views.
-  scoped_ptr<SystemBubbleWrapper> system_bubble_;
+  std::unique_ptr<SystemBubbleWrapper> system_bubble_;
 
   // Bubble for notifications.
-  scoped_ptr<SystemBubbleWrapper> notification_bubble_;
+  std::unique_ptr<SystemBubbleWrapper> notification_bubble_;
 
   // Keep track of the default view height so that when we create detailed
   // views directly (e.g. from a notification) we know what height to use.
   int default_bubble_height_;
 
   // Set to true when system notifications should be hidden (e.g. web
   // notification bubble is visible).
   bool hide_notifications_;
 
   // This is true when the displayed system tray menu is a full tray menu,
   // otherwise a single line item menu like the volume slider is shown.
   // Note that the value is only valid when |system_bubble_| is true.
   bool full_system_tray_menu_;
 
   TrayAccessibility* tray_accessibility_;  // not owned
   TrayCast* tray_cast_;
   TrayDate* tray_date_;
 
   // A reference to the Screen share and capture item.
   ScreenTrayItem* screen_capture_tray_item_;  // not owned
   ScreenTrayItem* screen_share_tray_item_;  // not owned
 
   DISALLOW_COPY_AND_ASSIGN(SystemTray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_H_