Make calls to AtomicString(const String&) explicit in dom/

Source/core/dom/Node.cpp

 /*
  * 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, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 1324 matching lines @@
 {
     if (localName.isNull())
         return 0;
 
     if (namespaceURI == starAtom)
         return getElementsByTagName(localName);
 
     return ensureRareData().ensureNodeLists().addCacheWithQualifiedName(this, namespaceURI.isEmpty() ? nullAtom : namespaceURI, localName);
 }
 
-PassRefPtr<NodeList> Node::getElementsByName(const String& elementName)
+// Takes an AtomicString in argument because it is common for elements to share the same name attribute.
+// Therefore, the NameNodeList factory function expects an AtomicString type.
+PassRefPtr<NodeList> Node::getElementsByName(const AtomicString& elementName)
 {
     return ensureRareData().ensureNodeLists().addCacheWithAtomicName<NameNodeList>(this, NameNodeListType, elementName);
 }
 
-PassRefPtr<NodeList> Node::getElementsByClassName(const String& classNames)
+// Takes an AtomicString in argument because it is common for elements to share the same set of class names.
+// Therefore, the ClassNodeList factory function expects an AtomicString type.
+PassRefPtr<NodeList> Node::getElementsByClassName(const AtomicString& classNames)
 {
-    return ensureRareData().ensureNodeLists().addCacheWithName<ClassNodeList>(this, ClassNodeListType, classNames);
+    return ensureRareData().ensureNodeLists().addCacheWithAtomicName<ClassNodeList>(this, ClassNodeListType, classNames);
 }
 
 PassRefPtr<RadioNodeList> Node::radioNodeList(const AtomicString& name, bool onlyMatchImgElements)
 {
     ASSERT(hasTagName(formTag) || hasTagName(fieldsetTag));
     CollectionType type = onlyMatchImgElements ? RadioImgNodeListType : RadioNodeListType;
     return ensureRareData().ensureNodeLists().addCacheWithAtomicName<RadioNodeList>(this, type, name);
 }
 
 PassRefPtr<Element> Node::querySelector(const AtomicString& selectors, ExceptionState& exceptionState)
@@ skipping 1375 matching lines @@
         node->showTreeForThis();
 }
 
 void showNodePath(const WebCore::Node* node)
 {
     if (node)
         node->showNodePathForThis();
 }
 
 #endif