Convert //ash from scoped_ptr to std::unique_ptr

ash/wm/toplevel_window_event_handler.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_WM_TOPLEVEL_WINDOW_EVENT_HANDLER_H_
 #define ASH_WM_TOPLEVEL_WINDOW_EVENT_HANDLER_H_
 
+#include <memory>
 #include <set>
 
 #include "ash/ash_export.h"
 #include "ash/display/window_tree_host_manager.h"
 #include "ash/wm/wm_types.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/events/event_handler.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/wm/public/window_move_client.h"
 
 namespace aura {
 class Window;
 }
 
 namespace ui {
@@ skipping 85 matching lines @@
 
   // Are we running a nested message loop from RunMoveLoop().
   bool in_move_loop_;
 
   // Is a window move/resize in progress because of gesture events?
   bool in_gesture_drag_;
 
   // Whether the drag was reverted. Set by CompleteDrag().
   bool drag_reverted_;
 
-  scoped_ptr<ScopedWindowResizer> window_resizer_;
+  std::unique_ptr<ScopedWindowResizer> window_resizer_;
 
   base::Closure quit_closure_;
 
   // Used to track if this object is deleted while running a nested message
   // loop. If non-null the destructor sets this to true.
   bool* destroyed_;
 
   DISALLOW_COPY_AND_ASSIGN(ToplevelWindowEventHandler);
 };
 
 }  // namespace aura
 
 #endif  // ASH_WM_TOPLEVEL_WINDOW_EVENT_HANDLER_H_