Standardize usage of virtual/override/final specifiers.

ui/views/widget/root_view_targeter.h

 // Copyright 2014 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_ROOT_VIEW_TARGETER_H_
 #define UI_VIEWS_WIDGET_ROOT_VIEW_TARGETER_H_
 
 #include "ui/views/view_targeter.h"
 #include "ui/views/views_export.h"
 
 namespace views {
 
 namespace internal {
 class RootView;
 }  // namespace internal
 
 class View;
 class ViewTargeterDelegate;
 
 // A derived class of ViewTargeter that defines targeting logic for cases
 // needing to access the members of RootView. For example, when determining the
 // target of a gesture event, we need to know if a previous gesture has already
 // established the View to which all subsequent gestures should be targeted.
 class VIEWS_EXPORT RootViewTargeter : public ViewTargeter {
  public:
   RootViewTargeter(ViewTargeterDelegate* delegate,
                    internal::RootView* root_view);
-  virtual ~RootViewTargeter();
+  ~RootViewTargeter() override;
 
  private:
   // ViewTargeter:
-  virtual View* FindTargetForGestureEvent(
-      View* root,
-      const ui::GestureEvent& gesture) override;
-  virtual ui::EventTarget* FindNextBestTargetForGestureEvent(
+  View* FindTargetForGestureEvent(View* root,
+                                  const ui::GestureEvent& gesture) override;
+  ui::EventTarget* FindNextBestTargetForGestureEvent(
       ui::EventTarget* previous_target,
       const ui::GestureEvent& gesture) override;
 
   // A pointer to the RootView on which |this| is installed.
   internal::RootView* root_view_;
 
   DISALLOW_COPY_AND_ASSIGN(RootViewTargeter);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_ROOT_VIEW_TARGETER_H_