Standardize usage of virtual/override/final specifiers.

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 "base/compiler_specific.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
 // in the widget's view tree according the z-order of the views in the view
 // tree. Windows not associated to a view are stacked above windows with an
 // associated view. The child windows' layers are additionally reordered
 // according to the z-order of the associated views relative to views with
 // layers.
 class WindowReorderer : public aura::WindowObserver {
  public:
   WindowReorderer(aura::Window* window, View* root_view);
-  virtual ~WindowReorderer();
+  ~WindowReorderer() override;
 
   // Explicitly reorder the children of |window_| (and their layers). This
   // method should be called when the position of a view with an associated
   // window changes in the view hierarchy. This method assumes that the
   // child layers of |window_| which are owned by views are already in the
   // correct z-order relative to each other and does no reordering if there
   // are no views with an associated window.
   void ReorderChildWindows();
 
  private:
   // aura::WindowObserver overrides:
-  virtual void OnWindowAdded(aura::Window* new_window) override;
-  virtual void OnWillRemoveWindow(aura::Window* window) override;
-  virtual void OnWindowDestroying(aura::Window* window) override;
+  void OnWindowAdded(aura::Window* new_window) override;
+  void OnWillRemoveWindow(aura::Window* window) override;
+  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_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowReorderer);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_WINDOW_REORDERER_H_