Replace scoped_ptr with std::unique_ptr in //ui

ui/views/widget/window_reorderer.h

 // Copyright 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 UI_VIEWS_WIDGET_WINDOW_REORDERER_H_
 #define UI_VIEWS_WIDGET_WINDOW_REORDERER_H_
 
+#include <memory>
+
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/aura/window_observer.h"
 
 namespace aura {
 class Window;
 }
 
 namespace views {
 class View;
 
 // Class which reorders the widget's child windows which have an associated view
@@ skipping 22 matching lines @@
   void OnWindowDestroying(aura::Window* window) override;
 
   // The window and the root view of the native widget which owns the
   // WindowReorderer.
   aura::Window* parent_window_;
   View* root_view_;
 
   // Reorders windows as a result of the kHostViewKey being set on a child of
   // |parent_window_|.
   class AssociationObserver;
-  scoped_ptr<AssociationObserver> association_observer_;
+  std::unique_ptr<AssociationObserver> association_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowReorderer);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_WINDOW_REORDERER_H_