Remove PlatformTouchEvent/Point and use WebTouchEvent/Point instead

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.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