Convert //ash from scoped_ptr to std::unique_ptr

ash/wm/window_cycle_controller.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_WM_WINDOW_CYCLE_CONTROLLER_H_
 #define ASH_WM_WINDOW_CYCLE_CONTROLLER_H_
 
+#include <memory>
+
 #include "ash/ash_export.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 
 namespace ui {
 class EventHandler;
 }
 
 namespace aura {
 class Window;
 }  // namespace aura
 
@@ skipping 37 matching lines @@
 
   // Returns the WindowCycleList. Really only useful for testing.
   const WindowCycleList* window_cycle_list() const {
     return window_cycle_list_.get();
   }
 
  private:
   // Cycles to the next or previous window based on |direction|.
   void Step(Direction direction);
 
-  scoped_ptr<WindowCycleList> window_cycle_list_;
+  std::unique_ptr<WindowCycleList> window_cycle_list_;
 
   // Tracks what Window was active when starting to cycle and used to determine
   // if the active Window changed in when ending cycling.
   aura::Window* active_window_before_window_cycle_ = nullptr;
 
   // Event handler to watch for release of alt key.
-  scoped_ptr<ui::EventHandler> event_handler_;
+  std::unique_ptr<ui::EventHandler> event_handler_;
 
   base::Time cycle_start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowCycleController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_WINDOW_CYCLE_CONTROLLER_H_