Make sure the rootNode of a LiveNodeListBase is always a ContainerNode

Source/core/dom/TagNodeList.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, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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 15 matching lines @@
 
 #include "core/dom/Element.h"
 #include "core/dom/LiveNodeList.h"
 #include "wtf/text/AtomicString.h"
 
 namespace WebCore {
 
 // NodeList that limits to a particular tag.
 class TagNodeList : public LiveNodeList {
 public:
-    static PassRefPtr<TagNodeList> create(PassRefPtr<Node> rootNode, const AtomicString& namespaceURI, const AtomicString& localName)
+    static PassRefPtr<TagNodeList> create(PassRefPtr<ContainerNode> rootNode, const AtomicString& namespaceURI, const AtomicString& localName)
     {
         ASSERT(namespaceURI != starAtom);
         return adoptRef(new TagNodeList(rootNode, TagNodeListType, namespaceURI, localName));
     }
 
-    static PassRefPtr<TagNodeList> create(PassRefPtr<Node> rootNode, CollectionType type, const AtomicString& localName)
+    static PassRefPtr<TagNodeList> create(PassRefPtr<ContainerNode> rootNode, CollectionType type, const AtomicString& localName)
     {
         ASSERT_UNUSED(type, type == TagNodeListType);
         return adoptRef(new TagNodeList(rootNode, TagNodeListType, starAtom, localName));
     }
 
     virtual ~TagNodeList();
 
 protected:
-    TagNodeList(PassRefPtr<Node> rootNode, CollectionType, const AtomicString& namespaceURI, const AtomicString& localName);
+    TagNodeList(PassRefPtr<ContainerNode> rootNode, CollectionType, const AtomicString& namespaceURI, const AtomicString& localName);
 
     virtual bool nodeMatches(const Element&) const OVERRIDE;
 
     AtomicString m_namespaceURI;
     AtomicString m_localName;
 };
 
 class HTMLTagNodeList FINAL : public TagNodeList {
 public:
-    static PassRefPtr<HTMLTagNodeList> create(PassRefPtr<Node> rootNode, CollectionType type, const AtomicString& localName)
+    static PassRefPtr<HTMLTagNodeList> create(PassRefPtr<ContainerNode> rootNode, CollectionType type, const AtomicString& localName)
     {
         ASSERT_UNUSED(type, type == HTMLTagNodeListType);
         return adoptRef(new HTMLTagNodeList(rootNode, localName));
     }
 
     bool nodeMatchesInlined(const Element&) const;
 
 private:
-    HTMLTagNodeList(PassRefPtr<Node> rootNode, const AtomicString& localName);
+    HTMLTagNodeList(PassRefPtr<ContainerNode> rootNode, const AtomicString& localName);
 
     virtual bool nodeMatches(const Element&) const OVERRIDE;
 
     AtomicString m_loweredLocalName;
 };
 
 inline bool HTMLTagNodeList::nodeMatchesInlined(const Element& testNode) const
 {
     // Implements http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-getelementsbytagname
     if (m_localName != starAtom) {
         const AtomicString& localName = testNode.isHTMLElement() ? m_loweredLocalName : m_localName;
         if (localName != testNode.localName())
             return false;
     }
     ASSERT(m_namespaceURI == starAtom);
     return true;
 }
 
 } // namespace WebCore
 
 #endif // TagNodeList_h