Make Element::elementData() / ensureUniqueElementData() protected

Source/core/dom/Element.h

 /*
  * 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) 2003-2011, 2013, 2014 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 280 matching lines @@
 
     virtual bool hasLegalLinkAttribute(const QualifiedName&) const;
     virtual const QualifiedName& subResourceAttributeName() const;
 
     // Only called by the parser immediately after element construction.
     void parserSetAttributes(const Vector<Attribute>&);
 
     // Remove attributes that might introduce scripting from the vector leaving the element unchanged.
     void stripScriptingAttributes(Vector<Attribute>&) const;
 
-    const ElementData* elementData() const { return m_elementData.get(); }
-    UniqueElementData& ensureUniqueElementData();
+    bool sharesSameElementData(const Element& other) const { return elementData() == other.elementData(); }
 
     void synchronizeAllAttributes() const;
 
     // Clones attributes only.
     void cloneAttributesFromElement(const Element&);
 
     // Clones all attribute-derived data, including subclass specifics (through copyNonAttributeProperties.)
     void cloneDataFromElement(const Element&);
 
     bool hasEquivalentAttributes(const Element* other) const;
@@ skipping 193 matching lines @@
     void clearMutableInlineStyleIfEmpty();
 
     void setTabIndex(int);
     virtual short tabIndex() const OVERRIDE;
 
     virtual void trace(Visitor*) OVERRIDE;
 
 protected:
     Element(const QualifiedName& tagName, Document*, ConstructionType);
 
+    const ElementData* elementData() const { return m_elementData.get(); }
+    UniqueElementData& ensureUniqueElementData();
+
     void addPropertyToPresentationAttributeStyle(MutableStylePropertySet*, CSSPropertyID, CSSValueID identifier);
     void addPropertyToPresentationAttributeStyle(MutableStylePropertySet*, CSSPropertyID, double value, CSSPrimitiveValue::UnitType);
     void addPropertyToPresentationAttributeStyle(MutableStylePropertySet*, CSSPropertyID, const String& value);
 
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
     virtual void childrenChanged(const ChildrenChange&) OVERRIDE;
 
     virtual void willRecalcStyle(StyleRecalcChange);
     virtual void didRecalcStyle(StyleRecalcChange);
@@ skipping 333 matching lines @@
     static PassRefPtrWillBeRawPtr<T> create(const QualifiedName&, Document&)
 #define DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(T) \
     PassRefPtrWillBeRawPtr<T> T::create(const QualifiedName& tagName, Document& document) \
     { \
         return adoptRefWillBeNoop(new T(tagName, document)); \
     }
 
 } // namespace
 
 #endif