Add support for DOM Level 3 WheelEvent

Source/core/page/DOMWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 1388 matching lines @@
     window->sessionStorage(IGNORE_EXCEPTION);
 }
 
 bool DOMWindow::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
 {
     if (!EventTarget::addEventListener(eventType, listener, useCapture))
         return false;
 
     if (Document* document = this->document()) {
         document->addListenerTypeIfNeeded(eventType);
-        if (eventType == eventNames().mousewheelEvent)
+        if (eventType == eventNames().wheelEvent || eventType == eventNames().mousewheelEvent)
             document->didAddWheelEventHandler();
         else if (eventNames().isTouchEventType(eventType))
             document->didAddTouchEventHandler(document);
         else if (eventType == eventNames().storageEvent)
             didAddStorageEventListener(this);
     }
 
     if (eventType == eventNames().unloadEvent) {
         addUnloadEventListener(this);
     } else if (eventType == eventNames().beforeunloadEvent) {
@@ skipping 16 matching lines @@
 
     return true;
 }
 
 bool DOMWindow::removeEventListener(const AtomicString& eventType, EventListener* listener, bool useCapture)
 {
     if (!EventTarget::removeEventListener(eventType, listener, useCapture))
         return false;
 
     if (Document* document = this->document()) {
-        if (eventType == eventNames().mousewheelEvent)
+        if (eventType == eventNames().wheelEvent || eventType == eventNames().mousewheelEvent)
             document->didRemoveWheelEventHandler();
         else if (eventNames().isTouchEventType(eventType))
             document->didRemoveTouchEventHandler(document);
     }
 
     if (eventType == eventNames().unloadEvent)
         removeUnloadEventListener(this);
     else if (eventType == eventNames().beforeunloadEvent && allowsBeforeUnloadListeners(this))
         removeBeforeUnloadEventListener(this);
     else if (eventType == eventNames().devicemotionEvent) {
@@ skipping 304 matching lines @@
     return static_cast<DOMWindowLifecycleNotifier*>(LifecycleContext::lifecycleNotifier());
 }
 
 PassOwnPtr<LifecycleNotifier> DOMWindow::createLifecycleNotifier()
 {
     return DOMWindowLifecycleNotifier::create(this);
 }
 
 
 } // namespace WebCore