Make AttachBehavior a required argument.

Source/core/editing/htmlediting.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Apple 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 886 matching lines @@
 
     // Make the span to hold the tab.
     RefPtr<Element> spanElement = document->createElement(spanTag, false);
     spanElement->setAttribute(classAttr, AppleTabSpanClass);
     spanElement->setAttribute(styleAttr, "white-space:pre");
 
     // Add tab text to that span.
     if (!tabTextNode)
         tabTextNode = document->createEditingTextNode("\t");
 
-    spanElement->appendChild(tabTextNode.release(), ASSERT_NO_EXCEPTION);
+    spanElement->appendChild(tabTextNode.release(), ASSERT_NO_EXCEPTION, DeprecatedAttachNow);
 
     return spanElement.release();
 }
 
 PassRefPtr<Element> createTabSpanElement(Document* document, const String& tabText)
 {
     return createTabSpanElement(document, document->createTextNode(tabText));
 }
 
 PassRefPtr<Element> createTabSpanElement(Document* document)
@@ skipping 249 matching lines @@
     // if the selection starts just before a paragraph break, skip over it
     if (isEndOfParagraph(visiblePosition))
         return visiblePosition.next().deepEquivalent().downstream();
 
     // otherwise, make sure to be at the start of the first selected node,
     // instead of possibly at the end of the last node before the selection
     return visiblePosition.deepEquivalent().downstream();
 }
 
 } // namespace WebCore