LiveNodeListBase code should not need to worry about id/name cache invalidation

Source/core/dom/LiveNodeListBase.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2014 Samsung Electronics. 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 45 matching lines @@
     }
 
     virtual ~LiveNodeListBase()
     {
         document().unregisterNodeList(this);
     }
 
     ContainerNode& rootNode() const;
 
     void didMoveToDocument(Document& oldDocument, Document& newDocument);
-    ALWAYS_INLINE bool hasIdNameCache() const { return !isLiveNodeListType(type()); }
     ALWAYS_INLINE bool isRootedAtDocument() const { return m_rootType == NodeListIsRootedAtDocument; }
     ALWAYS_INLINE NodeListInvalidationType invalidationType() const { return static_cast<NodeListInvalidationType>(m_invalidationType); }
     ALWAYS_INLINE CollectionType type() const { return static_cast<CollectionType>(m_collectionType); }
     ContainerNode& ownerNode() const { return *m_ownerNode; }
-    ALWAYS_INLINE void invalidateCache(const QualifiedName* attrName) const
-    {
-        if (!attrName || shouldInvalidateTypeOnAttributeChange(invalidationType(), *attrName))
-            invalidateCache();
-        else if (hasIdNameCache() && (*attrName == HTMLNames::idAttr || *attrName == HTMLNames::nameAttr))
-            invalidateIdNameCacheMaps();
-    }
+
     virtual void invalidateCache(Document* oldDocument = 0) const = 0;
+    void invalidateCacheForAttribute(const QualifiedName*) const;
 
     static bool shouldInvalidateTypeOnAttributeChange(NodeListInvalidationType, const QualifiedName&);
 
 protected:
     Document& document() const { return m_ownerNode->document(); }
 
     ALWAYS_INLINE NodeListRootType rootType() const { return static_cast<NodeListRootType>(m_rootType); }
 
     template <class NodeListType>
     static Element* firstMatchingElement(const NodeListType&);
     template <class NodeListType>
     static Element* lastMatchingElement(const NodeListType&);
     template <class NodeListType>
     static Element* nextMatchingElement(const NodeListType&, Element& current);
     template <class NodeListType>
     static Element* previousMatchingElement(const NodeListType&, Element& current);
     template <class NodeListType>
     static Element* traverseMatchingElementsForwardToOffset(const NodeListType&, unsigned offset, Element& currentElement, unsigned& currentOffset);
     template <class NodeListType>
     static Element* traverseMatchingElementsBackwardToOffset(const NodeListType&, unsigned offset, Element& currentElement, unsigned& currentOffset);
 
 private:
-    void invalidateIdNameCacheMaps() const;
-
     RefPtr<ContainerNode> m_ownerNode; // Cannot be null.
     const unsigned m_rootType : 1;
     const unsigned m_invalidationType : 4;
     const unsigned m_collectionType : 5;
 };
 
 ALWAYS_INLINE bool LiveNodeListBase::shouldInvalidateTypeOnAttributeChange(NodeListInvalidationType type, const QualifiedName& attrName)
 {
     switch (type) {
     case InvalidateOnClassAttrChange:
@@ skipping 79 matching lines @@
     while ((previous = previousMatchingElement(nodeList, *previous))) {
         if (--currentOffset == offset)
             return previous;
     }
     return 0;
 }
 
 } // namespace WebCore
 
 #endif // LiveNodeListBase_h