Standardize usage of virtual/override/final in ui/

ui/events/gesture_detection/gesture_listeners.h

Index: ui/events/gesture_detection/gesture_listeners.h
diff --git a/ui/events/gesture_detection/gesture_listeners.h b/ui/events/gesture_detection/gesture_listeners.h
index 1d623476b765c57257cf9c0250b2876517bd21d9..61f541868392c41bf2425dc52b47a241297016c6 100644
--- a/ui/events/gesture_detection/gesture_listeners.h
+++ b/ui/events/gesture_detection/gesture_listeners.h
@@ -53,29 +53,28 @@ class GESTURE_DETECTION_EXPORT SimpleGestureListener
       public DoubleTapListener {
  public:
   // GestureListener implementation.
-  virtual bool OnDown(const MotionEvent& e) override;
-  virtual void OnShowPress(const MotionEvent& e) override;
-  virtual bool OnSingleTapUp(const MotionEvent& e) override;
-  virtual void OnLongPress(const MotionEvent& e) override;
-  virtual bool OnScroll(const MotionEvent& e1,
-                        const MotionEvent& e2,
-                        float distance_x,
-                        float distance_y) override;
-  virtual bool OnFling(const MotionEvent& e1,
-                       const MotionEvent& e2,
-                       float velocity_x,
-                       float velocity_y) override;
-  virtual bool OnSwipe(const MotionEvent& e1,
-                       const MotionEvent& e2,
-                       float velocity_x,
-                       float velocity_y) override;
-  virtual bool OnTwoFingerTap(const MotionEvent& e1,
-                              const MotionEvent& e2) override;
+  bool OnDown(const MotionEvent& e) override;
+  void OnShowPress(const MotionEvent& e) override;
+  bool OnSingleTapUp(const MotionEvent& e) override;
+  void OnLongPress(const MotionEvent& e) override;
+  bool OnScroll(const MotionEvent& e1,
+                const MotionEvent& e2,
+                float distance_x,
+                float distance_y) override;
+  bool OnFling(const MotionEvent& e1,
+               const MotionEvent& e2,
+               float velocity_x,
+               float velocity_y) override;
+  bool OnSwipe(const MotionEvent& e1,
+               const MotionEvent& e2,
+               float velocity_x,
+               float velocity_y) override;
+  bool OnTwoFingerTap(const MotionEvent& e1, const MotionEvent& e2) override;
 
   // DoubleTapListener implementation.
-  virtual bool OnSingleTapConfirmed(const MotionEvent& e) override;
-  virtual bool OnDoubleTap(const MotionEvent& e) override;
-  virtual bool OnDoubleTapEvent(const MotionEvent& e) override;
+  bool OnSingleTapConfirmed(const MotionEvent& e) override;
+  bool OnDoubleTap(const MotionEvent& e) override;
+  bool OnDoubleTapEvent(const MotionEvent& e) override;
 };
 
 }  // namespace ui