Make Touch.radiusX/Y float and make Touch.webkit* aliases in the IDL

Source/web/WebInputEventConversion.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 644 matching lines @@
 }
 
 static WebTouchPoint toWebTouchPoint(const Touch* touch, const LayoutObject* layoutObject, WebTouchPoint::State state)
 {
     WebTouchPoint point;
     point.id = touch->identifier();
     point.screenPosition = touch->screenLocation();
     point.position = convertAbsoluteLocationForLayoutObjectFloat(touch->absoluteLocation(), *layoutObject);
     point.radiusX = touch->radiusX();
     point.radiusY = touch->radiusY();
-    point.rotationAngle = touch->webkitRotationAngle();
+    point.rotationAngle = touch->rotationAngle();
     point.force = touch->force();
     point.state = state;
     return point;
 }
 
 static unsigned indexOfTouchPointWithId(const WebTouchPoint* touchPoints, unsigned touchPointsLength, unsigned id)
 {
     for (unsigned i = 0; i < touchPointsLength; ++i) {
         if (touchPoints[i].id == static_cast<int>(id))
             return i;
@@ skipping 76 matching lines @@
     modifiers = getWebInputModifiers(event);
 
     globalX = event.screenX();
     globalY = event.screenY();
     IntPoint localPoint = convertAbsoluteLocationForLayoutObject(event.absoluteLocation(), *layoutObject);
     x = localPoint.x();
     y = localPoint.y();
 }
 
 } // namespace blink