Use tighter typing in editing: markup

Source/core/editing/InsertTextCommand.cpp

 /*
  * Copyright (C) 2005 Apple Computer, 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 30 matching lines @@
     : CompositeEditCommand(document)
     , m_text(text)
     , m_selectInsertedText(selectInsertedText)
     , m_rebalanceType(rebalanceType)
 {
 }
 
 Position InsertTextCommand::positionInsideTextNode(const Position& p)
 {
     Position pos = p;
-    if (isTabSpanTextNode(pos.anchorNode())) {
+    if (isTabHTMLSpanElementTextNode(pos.anchorNode())) {
         RefPtrWillBeRawPtr<Node> textNode = document().createEditingTextNode("");
         insertNodeAtTabSpanPosition(textNode.get(), pos);
         return firstPositionInNode(textNode.get());
     }
 
     // Prepare for text input by looking at the specified position.
     // It may be necessary to insert a text node to receive characters.
     if (!pos.containerNode()->isTextNode()) {
         RefPtrWillBeRawPtr<Node> textNode = document().createEditingTextNode("");
         insertNodeAt(textNode.get(), pos);
@@ skipping 168 matching lines @@
 Position InsertTextCommand::insertTab(const Position& pos)
 {
     Position insertPos = VisiblePosition(pos, DOWNSTREAM).deepEquivalent();
     if (insertPos.isNull())
         return pos;
 
     Node* node = insertPos.containerNode();
     unsigned offset = node->isTextNode() ? insertPos.offsetInContainerNode() : 0;
 
     // keep tabs coalesced in tab span
-    if (isTabSpanTextNode(node)) {
+    if (isTabHTMLSpanElementTextNode(node)) {
         RefPtrWillBeRawPtr<Text> textNode = toText(node);
         insertTextIntoNode(textNode, offset, "\t");
         return Position(textNode.release(), offset + 1);
     }
 
     // create new tab span
     RefPtrWillBeRawPtr<HTMLSpanElement> spanElement = createTabSpanElement(document());
 
     // place it
     if (!node->isTextNode()) {
@@ skipping 11 matching lines @@
                 splitTextNode(textNode, offset);
             insertNodeBefore(spanElement, textNode.release());
         }
     }
 
     // return the position following the new tab
     return lastPositionInNode(spanElement.get());
 }
 
 }