Revert 132288 - Shrink immutable ElementAttributeData and StylePropertySet by one pointer each.

Source/WebCore/dom/ElementAttributeData.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 19 matching lines @@
 #include "CSSParser.h"
 #include "CSSStyleSheet.h"
 #include "StyledElement.h"
 #include "WebCoreMemoryInstrumentation.h"
 #include <wtf/MemoryInstrumentationVector.h>
 
 namespace WebCore {
 
 static size_t immutableElementAttributeDataSize(unsigned count)
 {
-    return sizeof(ElementAttributeData) + sizeof(Attribute) * count;
+    return sizeof(ImmutableElementAttributeData) + sizeof(Attribute) * count;
 }
 
 PassRefPtr<ElementAttributeData> ElementAttributeData::createImmutable(const Vector<Attribute>& attributes)
 {
     void* slot = WTF::fastMalloc(immutableElementAttributeDataSize(attributes.size()));
     return adoptRef(new (slot) ImmutableElementAttributeData(attributes));
 }
 
 PassRefPtr<ElementAttributeData> ElementAttributeData::create()
 {
@@ skipping 319 matching lines @@
 PassRefPtr<Attr> ElementAttributeData::getAttributeNode(const QualifiedName& name, Element* element) const
 {
     ASSERT(element);
     const Attribute* attribute = getAttributeItem(name);
     if (!attribute)
         return 0;
     return ensureAttr(element, attribute->name());
 }
 
 }