Standardize usage of virtual/override/final specifiers.

ash/shelf/overflow_bubble.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_SHELF_OVERFLOW_BUBBLE_H_
 #define ASH_SHELF_OVERFLOW_BUBBLE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/events/event_handler.h"
@@ skipping 10 matching lines @@
 namespace ash {
 class OverflowBubbleView;
 class ShelfLayoutManager;
 class ShelfView;
 
 // OverflowBubble displays the overflown launcher items in a bubble.
 class OverflowBubble : public ui::EventHandler,
                        public views::WidgetObserver {
  public:
   OverflowBubble();
-  virtual ~OverflowBubble();
+  ~OverflowBubble() override;
 
   // Shows an bubble pointing to |anchor| with |shelf_view| as its content.
   void Show(views::View* anchor, ShelfView* shelf_view);
 
   void Hide();
 
   // This method as name indicates will hide bubble and schedule paint
   // for overflow button.
   void HideBubbleAndRefreshButton();
 
   bool IsShowing() const { return !!bubble_; }
   ShelfView* shelf_view() { return shelf_view_; }
   OverflowBubbleView* bubble_view() { return bubble_; }
 
  private:
   void ProcessPressedEvent(ui::LocatedEvent* event);
 
   // Overridden from ui::EventHandler:
-  virtual void OnMouseEvent(ui::MouseEvent* event) override;
-  virtual void OnTouchEvent(ui::TouchEvent* event) override;
+  void OnMouseEvent(ui::MouseEvent* event) override;
+  void OnTouchEvent(ui::TouchEvent* event) override;
 
   // Overridden from views::WidgetObserver:
-  virtual void OnWidgetDestroying(views::Widget* widget) override;
+  void OnWidgetDestroying(views::Widget* widget) override;
 
   OverflowBubbleView* bubble_;  // Owned by views hierarchy.
   views::View* anchor_;  // Owned by ShelfView.
   ShelfView* shelf_view_;  // Owned by |bubble_|.
 
   DISALLOW_COPY_AND_ASSIGN(OverflowBubble);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELF_OVERFLOW_BUBBLE_H_