Standardize usage of virtual/override/final specifiers.

ui/aura/window_targeter.h

 // Copyright (c) 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_AURA_WINDOW_TARGETER_H_
 #define UI_AURA_WINDOW_TARGETER_H_
 
 #include "ui/aura/aura_export.h"
 #include "ui/events/event_targeter.h"
 
 namespace aura {
 
 class Window;
 
 class AURA_EXPORT WindowTargeter : public ui::EventTargeter {
  public:
   WindowTargeter();
-  virtual ~WindowTargeter();
+  ~WindowTargeter() override;
 
  protected:
   // ui::EventTargeter:
-  virtual ui::EventTarget* FindTargetForEvent(ui::EventTarget* root,
-                                              ui::Event* event) override;
-  virtual ui::EventTarget* FindTargetForLocatedEvent(
-      ui::EventTarget* root,
-      ui::LocatedEvent* event) override;
-  virtual bool SubtreeCanAcceptEvent(
-      ui::EventTarget* target,
-      const ui::LocatedEvent& event) const override;
-  virtual bool EventLocationInsideBounds(
-      ui::EventTarget* target,
-      const ui::LocatedEvent& event) const override;
+  ui::EventTarget* FindTargetForEvent(ui::EventTarget* root,
+                                      ui::Event* event) override;
+  ui::EventTarget* FindTargetForLocatedEvent(ui::EventTarget* root,
+                                             ui::LocatedEvent* event) override;
+  bool SubtreeCanAcceptEvent(ui::EventTarget* target,
+                             const ui::LocatedEvent& event) const override;
+  bool EventLocationInsideBounds(ui::EventTarget* target,
+                                 const ui::LocatedEvent& event) const override;
 
  private:
   Window* FindTargetForKeyEvent(Window* root_window,
                                 const ui::KeyEvent& event);
   Window* FindTargetInRootWindow(Window* root_window,
                                  const ui::LocatedEvent& event);
 
   DISALLOW_COPY_AND_ASSIGN(WindowTargeter);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_TARGETER_H_