Fix movementX/Y attributes for touch pointer events

third_party/WebKit/Source/platform/WebTouchEvent.cpp

 // Copyright 2017 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 "public/platform/WebTouchEvent.h"
 
 namespace blink {
 
 WebTouchEvent WebTouchEvent::flattenTransform() const {
   WebTouchEvent transformedEvent = *this;
   for (unsigned i = 0; i < touchesLength; ++i) {
     transformedEvent.touches[i] = touchPointInRootFrame(i);
   }
   transformedEvent.m_frameTranslate.x = 0;
   transformedEvent.m_frameTranslate.y = 0;
   transformedEvent.m_frameScale = 1;
 
   return transformedEvent;
 }
 
 WebTouchPoint WebTouchEvent::touchPointInRootFrame(unsigned point) const {
   DCHECK_LT(point, touchesLength);
   if (point >= touchesLength)
     return WebTouchPoint();
 
   WebTouchPoint transformedPoint = touches[point];
   transformedPoint.radiusX /= m_frameScale;
   transformedPoint.radiusY /= m_frameScale;
+  transformedPoint.movementX /= m_frameScale;
+  transformedPoint.movementY /= m_frameScale;
   transformedPoint.position.x =
       (transformedPoint.position.x / m_frameScale) + m_frameTranslate.x;
   transformedPoint.position.y =
       (transformedPoint.position.y / m_frameScale) + m_frameTranslate.y;
   return transformedPoint;
 }
 
 }  // namespace blink