Standardize usage of virtual/override/final in ui/

ui/events/test/test_event_handler.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 UI_EVENTS_TEST_TEST_EVENT_HANDLER_H_
 #define UI_EVENTS_TEST_TEST_EVENT_HANDLER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/events/event_handler.h"
 
 typedef std::vector<std::string> HandlerSequenceRecorder;
 
 namespace ui {
 namespace test {
 
 // A simple EventHandler that keeps track of the number of key events that it's
 // seen.
 class TestEventHandler : public EventHandler {
  public:
   TestEventHandler();
-  virtual ~TestEventHandler();
+  ~TestEventHandler() override;
 
   int num_key_events() const { return num_key_events_; }
   int num_mouse_events() const { return num_mouse_events_; }
   int num_scroll_events() const { return num_scroll_events_; }
   int num_touch_events() const { return num_touch_events_; }
   int num_gesture_events() const { return num_gesture_events_; }
 
   void Reset();
 
   void set_recorder(HandlerSequenceRecorder* recorder) {
     recorder_ = recorder;
   }
   void set_handler_name(const std::string& handler_name) {
     handler_name_ = handler_name;
   }
 
   // EventHandler overrides:
-  virtual void OnKeyEvent(KeyEvent* event) override;
-  virtual void OnMouseEvent(MouseEvent* event) override;
-  virtual void OnScrollEvent(ScrollEvent* event) override;
-  virtual void OnTouchEvent(TouchEvent* event) override;
-  virtual void OnGestureEvent(GestureEvent* event) override;
+  void OnKeyEvent(KeyEvent* event) override;
+  void OnMouseEvent(MouseEvent* event) override;
+  void OnScrollEvent(ScrollEvent* event) override;
+  void OnTouchEvent(TouchEvent* event) override;
+  void OnGestureEvent(GestureEvent* event) override;
 
  private:
   // How many events have been received of each type?
   int num_key_events_;
   int num_mouse_events_;
   int num_scroll_events_;
   int num_touch_events_;
   int num_gesture_events_;
 
   HandlerSequenceRecorder* recorder_;
   std::string handler_name_;
 
   DISALLOW_COPY_AND_ASSIGN(TestEventHandler);
 };
 
 }  // namespace test
 }  // namespace ui
 
 #endif // UI_EVENTS_TEST_TEST_EVENT_HANDLER_H_