Move StylePropertySet::createImmutable() to ImmutableStylePropertySet.

Source/core/css/StylePropertySet.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008, 2012 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 32 matching lines @@
 
 class StylePropertySet : public RefCounted<StylePropertySet> {
     friend class PropertyReference;
 public:
     ~StylePropertySet();
 
     // Override RefCounted's deref() to ensure operator delete is called on
     // the appropriate subclass type.
     void deref();
 
-    static PassRefPtr<StylePropertySet> createImmutable(const CSSProperty* properties, unsigned count, CSSParserMode);
-
     class PropertyReference {
     public:
         PropertyReference(const StylePropertySet& propertySet, unsigned index)
             : m_propertySet(propertySet)
             , m_index(index)
         {
         }
 
         CSSPropertyID id() const { return static_cast<CSSPropertyID>(propertyMetadata().m_propertyID); }
         CSSPropertyID shorthandID() const { return static_cast<CSSPropertyID>(propertyMetadata().m_shorthandID); }
@@ skipping 62 matching lines @@
     void removeBlockProperties();
     bool removePropertiesInSet(const CSSPropertyID* set, unsigned length);
 
     void mergeAndOverrideOnConflict(const StylePropertySet*);
 
     CSSParserMode cssParserMode() const { return static_cast<CSSParserMode>(m_cssParserMode); }
 
     void addSubresourceStyleURLs(ListHashSet<KURL>&, StyleSheetContents* contextStyleSheet) const;
 
     PassRefPtr<MutableStylePropertySet> mutableCopy() const;
-    PassRefPtr<StylePropertySet> immutableCopyIfNeeded() const;
+    PassRefPtr<ImmutableStylePropertySet> immutableCopyIfNeeded() const;
 
     void removeEquivalentProperties(const StylePropertySet*);
     void removeEquivalentProperties(const CSSStyleDeclaration*);
 
     PassRefPtr<MutableStylePropertySet> copyPropertiesInSet(const Vector<CSSPropertyID>&) const;
     
     String asText() const;
 
     PropertySetCSSStyleDeclaration* cssStyleDeclaration();
 
@@ skipping 43 matching lines @@
 
     friend class PropertySetCSSStyleDeclaration;
 };
 
 class ImmutableStylePropertySet : public StylePropertySet {
     // This is needed because we malloc() space for an
     // ImmutableStylePropertySet plus following properties, as a performance
     // tweak.
     NEW_DELETE_SAME_AS_MALLOC_FREE;
 public:
-    ImmutableStylePropertySet(const CSSProperty*, unsigned count, CSSParserMode);
     ~ImmutableStylePropertySet();
+    static PassRefPtr<ImmutableStylePropertySet> create(const CSSProperty* properties, unsigned count, CSSParserMode);
 
     void* m_storage;
+
+private:
+    ImmutableStylePropertySet(const CSSProperty*, unsigned count, CSSParserMode);
 };
 
 inline const CSSValue** StylePropertySet::immutableValueArray() const
 {
     ASSERT(!m_isMutable);
     return reinterpret_cast<const CSSValue**>(const_cast<const void**>((&static_cast<const ImmutableStylePropertySet*>(this)->m_storage)));
 }
 
 inline const StylePropertyMetadata* StylePropertySet::immutableMetadataArray() const
 {
@@ skipping 54 matching lines @@
 
     if (m_isMutable)
         delete static_cast<MutableStylePropertySet*>(this);
     else
         delete static_cast<ImmutableStylePropertySet*>(this);
 }
 
 } // namespace WebCore
 
 #endif // StylePropertySet_h