Have htmlediting create functions take a Document reference in argument

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 228 matching lines @@
     unsigned int offset = node->isTextNode() ? insertPos.offsetInContainerNode() : 0;
 
     // keep tabs coalesced in tab span
     if (isTabSpanTextNode(node)) {
         RefPtr<Text> textNode = toText(node);
         insertTextIntoNode(textNode, offset, "\t");
         return Position(textNode.release(), offset + 1);
     }
 
     // create new tab span
-    RefPtr<Element> spanNode = createTabSpanElement(&document());
+    RefPtr<Element> spanNode = createTabSpanElement(document());
 
     // place it
     if (!node->isTextNode()) {
         insertNodeAt(spanNode.get(), insertPos);
     } else {
         RefPtr<Text> textNode = toText(node);
         if (offset >= textNode->length())
             insertNodeAfter(spanNode, textNode.release());
         else {
             // split node to make room for the span
             // NOTE: splitTextNode uses textNode for the
             // second node in the split, so we need to
             // insert the span before it.
             if (offset > 0)
                 splitTextNode(textNode, offset);
             insertNodeBefore(spanNode, textNode.release());
         }
     }
 
     // return the position following the new tab
     return lastPositionInNode(spanNode.get());
 }
 
 }