Standardize usage of virtual/override/final in ui/

ui/events/test/mock_motion_event.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.
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/time/time.h"
 #include "ui/events/gesture_detection/motion_event_generic.h"
 #include "ui/gfx/geometry/point_f.h"
@@ skipping 19 matching lines @@
                   float y0,
                   float x1,
                   float y1,
                   float x2,
                   float y2);
   MockMotionEvent(Action action,
                   base::TimeTicks time,
                   const std::vector<gfx::PointF>& positions);
   MockMotionEvent(const MockMotionEvent& other);
 
-  virtual ~MockMotionEvent();
+  ~MockMotionEvent() override;
 
   // MotionEvent methods.
-  virtual scoped_ptr<MotionEvent> Clone() const override;
-  virtual scoped_ptr<MotionEvent> Cancel() const override;
+  scoped_ptr<MotionEvent> Clone() const override;
+  scoped_ptr<MotionEvent> Cancel() const override;
 
   // Utility methods.
   void PressPoint(float x, float y);
   void MovePoint(size_t index, float x, float y);
   void ReleasePoint();
   void CancelPoint();
   void SetTouchMajor(float new_touch_major);
   void SetRawOffset(float raw_offset_x, float raw_offset_y);
   void SetToolType(size_t index, ToolType tool_type);
 
  private:
   void PushPointer(float x, float y);
   void ResolvePointers();
 };
 
 }  // namespace test
 }  // namespace ui