Convert //ash from scoped_ptr to std::unique_ptr

ash/wm/dock/docked_window_layout_manager.h

 // Copyright (c) 2013 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_WM_DOCK_DOCKED_WINDOW_LAYOUT_MANAGER_H_
 #define ASH_WM_DOCK_DOCKED_WINDOW_LAYOUT_MANAGER_H_
 
+#include <memory>
+
 #include "ash/ash_export.h"
 #include "ash/shelf/shelf_layout_manager_observer.h"
 #include "ash/shell_observer.h"
 #include "ash/snap_to_pixel_layout_manager.h"
 #include "ash/wm/dock/dock_types.h"
 #include "ash/wm/dock/docked_window_layout_manager_observer.h"
 #include "ash/wm/window_state_observer.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_observer.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/keyboard/keyboard_controller_observer.h"
 #include "ui/wm/public/activation_change_observer.h"
 
 namespace aura {
 class Window;
@@ skipping 284 matching lines @@
 
   // The last active window. Used to maintain stacking order even if no windows
   // are currently focused.
   aura::Window* last_active_window_;
 
   // Timestamp of the last user-initiated action that changed docked state.
   // Used in UMA metrics.
   base::Time last_action_time_;
 
   // Observes shelf for bounds changes.
-  scoped_ptr<ShelfWindowObserver> shelf_observer_;
+  std::unique_ptr<ShelfWindowObserver> shelf_observer_;
 
   // Widget used to paint a background for the docked area.
-  scoped_ptr<DockedBackgroundWidget> background_widget_;
+  std::unique_ptr<DockedBackgroundWidget> background_widget_;
 
   // Observers of dock bounds changes.
   base::ObserverList<DockedWindowLayoutManagerObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(DockedWindowLayoutManager);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_DOCK_DOCKED_WINDOW_LAYOUT_MANAGER_H_