Remove beforeload events.

Source/core/html/HTMLScriptElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 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 57 matching lines @@
     HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
     m_loader->childrenChanged();
 }
 
 void HTMLScriptElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
     if (name == srcAttr)
         m_loader->handleSourceAttribute(value);
     else if (name == asyncAttr)
         m_loader->handleAsyncAttribute();
-    else if (name == onbeforeloadAttr)
-        setAttributeEventListener(EventTypeNames::beforeload, createAttributeEventListener(this, name, value));
     else
         HTMLElement::parseAttribute(name, value);
 }
 
 Node::InsertionNotificationRequest HTMLScriptElement::insertedInto(ContainerNode* insertionPoint)
 {
     HTMLElement::insertedInto(insertionPoint);
     return InsertionShouldCallDidNotifySubtreeInsertions;
 }
 
@@ skipping 81 matching lines @@
     ASSERT(!m_loader->haveFiredLoadEvent());
     dispatchEvent(Event::create(EventTypeNames::load));
 }
 
 PassRefPtr<Element> HTMLScriptElement::cloneElementWithoutAttributesAndChildren()
 {
     return adoptRef(new HTMLScriptElement(document(), false, m_loader->alreadyStarted()));
 }
 
 }