Introduce isHTMLTableElement and toHTMLTableElement

Source/core/editing/markup.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009, 2010, 2011 Google Inc. All rights reserved.
  * Copyright (C) 2011 Igalia S.L.
  * Copyright (C) 2011 Motorola Mobility. 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
@@ skipping 33 matching lines @@
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/Range.h"
 #include "core/editing/Editor.h"
 #include "core/editing/MarkupAccumulator.h"
 #include "core/editing/TextIterator.h"
 #include "core/editing/VisibleSelection.h"
 #include "core/editing/VisibleUnits.h"
 #include "core/editing/htmlediting.h"
 #include "core/html/HTMLBodyElement.h"
 #include "core/html/HTMLElement.h"
+#include "core/html/HTMLTableElement.h"
 #include "core/html/HTMLTextFormControlElement.h"
 #include "core/page/Frame.h"
 #include "core/rendering/RenderObject.h"
 #include "weborigin/KURL.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/text/StringBuilder.h"
 
 using namespace std;
 
 namespace WebCore {
@@ skipping 360 matching lines @@
         || isNonTableCellHTMLBlockElement(node);
 }
 
 static Node* ancestorToRetainStructureAndAppearanceForBlock(Node* commonAncestorBlock)
 {
     if (!commonAncestorBlock)
         return 0;
 
     if (commonAncestorBlock->hasTagName(tbodyTag) || commonAncestorBlock->hasTagName(trTag)) {
         ContainerNode* table = commonAncestorBlock->parentNode();
-        while (table && !table->hasTagName(tableTag))
+        while (table && !isHTMLTableElement(table))
             table = table->parentNode();
 
         return table;
     }
 
     if (isNonTableCellHTMLBlockElement(commonAncestorBlock))
         return commonAncestorBlock;
 
     return 0;
 }
@@ skipping 638 matching lines @@
     if (hasOneChild(containerNode.get())) {
         containerNode->replaceChild(textNode.release(), containerNode->firstChild(), ec);
         return;
     }
 
     containerNode->removeChildren();
     containerNode->appendChild(textNode.release(), ec);
 }
 
 }