Add support for DOM Level 3 WheelEvent

Source/core/dom/WheelEvent.h

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 17 matching lines @@
 #include "core/dom/MouseEvent.h"
 #include "core/platform/graphics/FloatPoint.h"
 
 namespace WebCore {
 
 class PlatformWheelEvent;
 
 struct WheelEventInit : public MouseEventInit {
     WheelEventInit();
 
-    int wheelDeltaX;
-    int wheelDeltaY;
+    int deltaX;
+    int deltaY;
     unsigned deltaMode;
 };
 
 class WheelEvent : public MouseEvent {
 public:
     enum { TickMultiplier = 120 };
 
     enum DeltaMode {
         DOM_DELTA_PIXEL = 0,
         DOM_DELTA_LINE,
@@ skipping 21 matching lines @@
 
     void initWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView>,
         int screenX, int screenY, int pageX, int pageY,
         bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
 
     void initWebKitWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView>,
         int screenX, int screenY, int pageX, int pageY,
         bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
 
     int wheelDelta() const { return m_wheelDelta.y() ? m_wheelDelta.y() : m_wheelDelta.x(); }
-    int wheelDeltaX() const { return m_wheelDelta.x(); }
-    int wheelDeltaY() const { return m_wheelDelta.y(); }
+    int deltaX() const { return m_wheelDelta.x(); }
+    int deltaY() const { return m_wheelDelta.y(); }
     int rawDeltaX() const { return m_rawDelta.x(); }
     int rawDeltaY() const { return m_rawDelta.y(); }
     unsigned deltaMode() const { return m_deltaMode; }
 
     bool webkitDirectionInvertedFromDevice() const { return m_directionInvertedFromDevice; }
 
     virtual const AtomicString& interfaceName() const;
     virtual bool isMouseEvent() const;
 
 private:
@@ skipping 14 matching lines @@
     static PassRefPtr<WheelEventDispatchMediator> create(const PlatformWheelEvent&, PassRefPtr<AbstractView>);
 private:
     WheelEventDispatchMediator(const PlatformWheelEvent&, PassRefPtr<AbstractView>);
     WheelEvent* event() const;
     virtual bool dispatchEvent(EventDispatcher*) const OVERRIDE;
 };
 
 } // namespace WebCore
 
 #endif // WheelEvent_h