Introduce isHTMLTitleElement and toHTMLTitleElement

Source/core/editing/ReplaceSelectionCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009, 2010, 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 33 matching lines @@
 #include "core/editing/FrameSelection.h"
 #include "core/editing/HTMLInterchange.h"
 #include "core/editing/SimplifyMarkupCommand.h"
 #include "core/editing/SmartReplace.h"
 #include "core/editing/TextIterator.h"
 #include "core/editing/VisibleUnits.h"
 #include "core/editing/htmlediting.h"
 #include "core/editing/markup.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLInputElement.h"
+#include "core/html/HTMLTitleElement.h"
 #include "core/page/Frame.h"
 #include "core/rendering/RenderObject.h"
 #include "core/rendering/RenderText.h"
 #include <wtf/StdLibExtras.h>
 #include <wtf/Vector.h>
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
@@ skipping 632 matching lines @@
 }
 
 static void removeHeadContents(ReplacementFragment& fragment)
 {
     Node* next = 0;
     for (Node* node = fragment.firstChild(); node; node = next) {
         if (node->hasTagName(baseTag)
             || node->hasTagName(linkTag)
             || node->hasTagName(metaTag)
             || node->hasTagName(styleTag)
-            || node->hasTagName(titleTag)) {
+            || isHTMLTitleElement(node)) {
             next = NodeTraversal::nextSkippingChildren(node);
             fragment.removeNode(node);
         } else
             next = NodeTraversal::next(node);
     }
 }
 
 // Remove style spans before insertion if they are unnecessary.  It's faster because we'll 
 // avoid doing a layout.
 static bool handleStyleSpansBeforeInsertion(ReplacementFragment& fragment, const Position& insertionPos)
@@ skipping 769 matching lines @@
         removeNodeAndPruneAncestors(nodeAfterInsertionPos.get());
 
     VisibleSelection selectionAfterReplace(m_selectReplacement ? start : end, end);
 
     setEndingSelection(selectionAfterReplace);
 
     return true;
 }
 
 } // namespace WebCore