Extend MotionEvent to have tool type and button state

ui/events/gesture_detection/mock_motion_event.h

Index: ui/events/gesture_detection/mock_motion_event.h
diff --git a/ui/events/gesture_detection/mock_motion_event.h b/ui/events/gesture_detection/mock_motion_event.h
index 433de7b3b0821d0ff7c8eef0c6a883df1fc23003..53df76ee077b68c67d46a9800d02b2994c5f2282 100644
--- a/ui/events/gesture_detection/mock_motion_event.h
+++ b/ui/events/gesture_detection/mock_motion_event.h
@@ -60,6 +60,8 @@ struct MockMotionEvent : public MotionEvent {
                                size_t historical_index) const OVERRIDE;
   virtual float GetHistoricalY(size_t pointer_index,
                                size_t historical_index) const OVERRIDE;
+  virtual ToolType GetToolType(size_t pointer_index) const OVERRIDE;
+  virtual int GetButtonState() const OVERRIDE;
 
   virtual scoped_ptr<MotionEvent> Clone() const OVERRIDE;
   virtual scoped_ptr<MotionEvent> Cancel() const OVERRIDE;