Move HTMLTagCollection to its own file

Source/core/html/HTMLTagCollection.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
- *           (C) 2000 Simon Hausmann (hausmann@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
- * Copyright (C) 2004, 2006, 2010 Apple Inc. All rights reserved.
+ * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
+ * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
+ * 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/html/HTMLHeadElement.h"
-
-#include "core/HTMLNames.h"
+#include "HTMLTagCollection.h"
 
 namespace WebCore {
 
-using namespace HTMLNames;
-
-inline HTMLHeadElement::HTMLHeadElement(Document& document)
-    : HTMLElement(headTag, document)
+HTMLTagCollection::HTMLTagCollection(ContainerNode& rootNode, const AtomicString& localName)
+    : TagCollection(rootNode, HTMLTagCollectionType, starAtom, localName)
+    , m_loweredLocalName(localName.lower())
 {
-    ScriptWrappable::init(this);
+    ASSERT(rootNode.document().isHTMLDocument());
 }
 
-DEFINE_NODE_FACTORY(HTMLHeadElement)
-
-}
+} // namespace WebCore