Move create() methods from StylePropertySet to MutableStylePropertySet.

Source/core/dom/StyledElement.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) 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
@@ skipping 132 matching lines @@
 
 CSSStyleDeclaration* StyledElement::style()
 {
     return ensureMutableInlineStyle()->ensureInlineCSSStyleDeclaration(this);
 }
 
 MutableStylePropertySet* StyledElement::ensureMutableInlineStyle()
 {
     RefPtr<StylePropertySet>& inlineStyle = ensureUniqueElementData()->m_inlineStyle;
     if (!inlineStyle)
-        inlineStyle = StylePropertySet::create(strictToCSSParserMode(isHTMLElement() && !document()->inQuirksMode()));
+        inlineStyle = MutableStylePropertySet::create(strictToCSSParserMode(isHTMLElement() && !document()->inQuirksMode()));
     else if (!inlineStyle->isMutable())
         inlineStyle = inlineStyle->mutableCopy();
     ASSERT(inlineStyle->isMutable());
     return static_cast<MutableStylePropertySet*>(inlineStyle.get());
 }
 
 void StyledElement::attributeChanged(const QualifiedName& name, const AtomicString& newValue, AttributeModificationReason reason)
 {
     if (name == styleAttr)
         styleAttributeChanged(newValue, reason);
@@ skipping 162 matching lines @@
         if (cacheIterator->value && cacheIterator->value->key != cacheKey)
             cacheHash = 0;
     } else
         cacheIterator = presentationAttributeCache().end();
 
     RefPtr<StylePropertySet> style;
     if (cacheHash && cacheIterator->value) {
         style = cacheIterator->value->value;
         presentationAttributeCacheCleaner().didHitPresentationAttributeCache();
     } else {
-        style = StylePropertySet::create(isSVGElement() ? SVGAttributeMode : CSSQuirksMode);
+        style = MutableStylePropertySet::create(isSVGElement() ? SVGAttributeMode : CSSQuirksMode);
         unsigned size = attributeCount();
         for (unsigned i = 0; i < size; ++i) {
             const Attribute* attribute = attributeItem(i);
             collectStyleForPresentationAttribute(attribute->name(), attribute->value(), static_cast<MutableStylePropertySet*>(style.get()));
         }
     }
 
     // ShareableElementData doesn't store presentation attribute style, so make sure we have a UniqueElementData.
     UniqueElementData* elementData = ensureUniqueElementData();
 
@@ skipping 25 matching lines @@
 {
     style->setProperty(propertyID, cssValuePool().createValue(value, unit));
 }
     
 void StyledElement::addPropertyToPresentationAttributeStyle(MutableStylePropertySet* style, CSSPropertyID propertyID, const String& value)
 {
     style->setProperty(propertyID, value, false, document()->elementSheet()->contents());
 }
 
 }