Remove abstract Clone and Cancel methods from MotionEvent

ui/events/gestures/motion_event_aura.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_EVENTS_GESTURE_DETECTION_UI_MOTION_EVENT_H_
 #define UI_EVENTS_GESTURE_DETECTION_UI_MOTION_EVENT_H_
 
 #include <map>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 24 matching lines @@
   virtual float GetRawY(size_t pointer_index) const override;
   virtual float GetTouchMajor(size_t pointer_index) const override;
   virtual float GetTouchMinor(size_t pointer_index) const override;
   virtual float GetOrientation(size_t pointer_index) const override;
   virtual float GetPressure(size_t pointer_index) const override;
   virtual ToolType GetToolType(size_t pointer_index) const override;
   virtual int GetButtonState() const override;
   virtual int GetFlags() const override;
   virtual base::TimeTicks GetEventTime() const override;
 
-  virtual scoped_ptr<MotionEvent> Clone() const override;
-  virtual scoped_ptr<MotionEvent> Cancel() const override;
-
   int GetSourceDeviceId(size_t pointer_index) const;
 
   // We can't cleanup removed touch points immediately upon receipt of a
   // TouchCancel or TouchRelease, as the MotionEvent needs to be able to report
   // information about those touch events. Once the MotionEvent has been
   // processed, we call CleanupRemovedTouchPoints to do the required
   // book-keeping.
   void CleanupRemovedTouchPoints(const TouchEvent& event);
 
  private:
@@ skipping 16 matching lines @@
       const base::TimeTicks& last_touch_time,
       Action cached_action,
       int cached_action_index,
       int flags,
       const PointData (&active_touches)[MotionEvent::MAX_TOUCH_POINT_COUNT]);
 
   static PointData GetPointDataFromTouchEvent(const TouchEvent& touch);
   void AddTouch(const TouchEvent& touch);
   void UpdateTouch(const TouchEvent& touch);
   void UpdateCachedAction(const TouchEvent& touch);
-  size_t GetIndexFromId(int id) const;
+  int GetIndexFromId(int id) const;
 
   size_t pointer_count_;
   base::TimeTicks last_touch_time_;
   Action cached_action_;
   // The index of the touch responsible for last ACTION_POINTER_DOWN or
   // ACTION_POINTER_UP. -1 if no such action has occurred.
   int cached_action_index_;
   int flags_;
 
   // We want constant time indexing by pointer_index, and fast indexing by id.
   PointData active_touches_[MotionEvent::MAX_TOUCH_POINT_COUNT];
 
   DISALLOW_COPY_AND_ASSIGN(MotionEventAura);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_GESTURE_DETECTION_UI_MOTION_EVENT_H_