Move LiveNodeListBase class to its own header

Source/core/dom/LiveNodeListBase.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, 2006, 2007, 2008, 2010 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
-#include "core/dom/LiveNodeList.h"
+#include "core/dom/LiveNodeListBase.h"
 
-#include "core/dom/Element.h"
 #include "core/html/HTMLCollection.h"
 
 namespace WebCore {
 
 ContainerNode& LiveNodeListBase::rootNode() const
 {
     if (isRootedAtDocument() && m_ownerNode->inDocument())
         return m_ownerNode->document();
     return *m_ownerNode;
 }
 
 void LiveNodeListBase::didMoveToDocument(Document& oldDocument, Document& newDocument)
 {
     invalidateCache(&oldDocument);
     oldDocument.unregisterNodeList(this);
     newDocument.registerNodeList(this);
 }
 
 void LiveNodeListBase::invalidateIdNameCacheMaps() const
 {
     ASSERT(hasIdNameCache());
     static_cast<const HTMLCollection*>(this)->invalidateIdNameCacheMaps();
 }
 
-Node* LiveNodeList::virtualOwnerNode() const
-{
-    return ownerNode();
-}
-
-void LiveNodeList::invalidateCache(Document*) const
-{
-    m_collectionIndexCache.invalidate();
-}
-
 } // namespace WebCore