Standardize usage of virtual/override/final specifiers.

ash/magnifier/partial_magnification_controller.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_MAGNIFIER_PARTIAL_MAGNIFICATION_CONTROLLER_H_
 #define ASH_MAGNIFIER_PARTIAL_MAGNIFICATION_CONTROLLER_H_
 
 #include "ui/aura/window_observer.h"
 #include "ui/events/event_handler.h"
 #include "ui/gfx/point.h"
 #include "ui/views/widget/widget_observer.h"
 
 namespace ash {
 
 const float kDefaultPartialMagnifiedScale = 1.5f;
 const float kNonPartialMagnifiedScale = 1.0f;
 
 // Controls the partial screen magnifier, which is a small area of the screen
 // which is zoomed in.  The zoomed area follows the mouse cursor when enabled.
 class PartialMagnificationController
   : public ui::EventHandler,
     public aura::WindowObserver,
     public views::WidgetObserver {
  public:
   PartialMagnificationController();
-  virtual ~PartialMagnificationController();
+  ~PartialMagnificationController() override;
 
   // Enables (or disables if |enabled| is false) partial screen magnifier
   // feature.
   virtual void SetEnabled(bool enabled);
 
   bool is_enabled() const { return is_enabled_; }
 
   // Sets the magnification ratio. 1.0f means no magnification.
   void SetScale(float scale);
 
@@ skipping 19 matching lines @@
   // Create the magnifier window.
   void CreateMagnifierWindow();
 
   // Cleans up the window if needed.
   void CloseMagnifierWindow();
 
   // Removes this as an observer of the zoom widget and the root window.
   void RemoveZoomWidgetObservers();
 
   // ui::EventHandler overrides:
-  virtual void OnMouseEvent(ui::MouseEvent* event) override;
+  void OnMouseEvent(ui::MouseEvent* event) override;
 
   // Overridden from WindowObserver:
-  virtual void OnWindowDestroying(aura::Window* window) override;
+  void OnWindowDestroying(aura::Window* window) override;
 
   // Overridden from WidgetObserver:
-  virtual void OnWidgetDestroying(views::Widget* widget) override;
+  void OnWidgetDestroying(views::Widget* widget) override;
 
   // True if the magnified window is in motion of zooming or un-zooming effect.
   // Otherwise, false.
   bool is_on_zooming_;
 
   bool is_enabled_;
 
   // Current scale, origin (left-top) position of the magnification window.
   float scale_;
   gfx::Point origin_;
 
   views::Widget* zoom_widget_;
 
   DISALLOW_COPY_AND_ASSIGN(PartialMagnificationController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_MAGNIFIER_PARTIAL_MAGNIFICATION_CONTROLLER_H_