Standardize usage of virtual/override/final specifiers.

ash/wm/overview/window_selector_controller.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 ASH_WM_OVERVIEW_WINDOW_SELECTOR_CONTROLLER_H_
 #define ASH_WM_OVERVIEW_WINDOW_SELECTOR_CONTROLLER_H_
 
 #include <list>
 #include <vector>
 
@@ skipping 12 matching lines @@
 namespace ash {
 class WindowSelector;
 class WindowSelectorTest;
 
 // Manages a window selector which displays an overview of all windows and
 // allows selecting a window to activate it.
 class ASH_EXPORT WindowSelectorController
     : public WindowSelectorDelegate {
  public:
   WindowSelectorController();
-  virtual ~WindowSelectorController();
+  ~WindowSelectorController() override;
 
   // Returns true if selecting windows in an overview is enabled. This is false
   // at certain times, such as when the lock screen is visible.
   static bool CanSelect();
 
   // Enters overview mode. This is essentially the window cycling mode however
   // not released on releasing the alt key and allows selecting with the mouse
   // or touch rather than keypresses.
   void ToggleOverview();
 
   // Returns true if window selection mode is active.
   bool IsSelecting();
 
   // WindowSelectorDelegate:
-  virtual void OnSelectionEnded() override;
+  void OnSelectionEnded() override;
 
  private:
   friend class WindowSelectorTest;
 
   // Dispatched when window selection begins.
   void OnSelectionStarted();
 
   scoped_ptr<WindowSelector> window_selector_;
   base::Time last_selection_time_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowSelectorController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_OVERVIEW_WINDOW_SELECTOR_CONTROLLER_H_