Have htmlediting create functions take a Document reference in argument

Source/core/editing/InsertLineBreakCommand.cpp

 /*
  * Copyright (C) 2005, 2006 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 90 matching lines @@
         return;
 
     Position pos(caret.deepEquivalent());
 
     pos = positionAvoidingSpecialElementBoundary(pos);
 
     pos = positionOutsideTabSpan(pos);
 
     RefPtr<Node> nodeToInsert;
     if (shouldUseBreakElement(pos))
-        nodeToInsert = createBreakElement(&document());
+        nodeToInsert = createBreakElement(document());
     else
         nodeToInsert = document().createTextNode("\n");
 
     // FIXME: Need to merge text nodes when inserting just after or before text.
 
     if (isEndOfParagraph(caret) && !lineBreakExistsAtVisiblePosition(caret)) {
         bool needExtraLineBreak = !pos.deprecatedNode()->hasTagName(hrTag) && !isHTMLTableElement(pos.deprecatedNode());
 
         insertNodeAt(nodeToInsert.get(), pos);
 
@@ skipping 58 matching lines @@
         // before the line break (if the line break is at the end of a block it isn't selectable).
         // So, this next call sets the endingSelection() to a caret just after the line break
         // that we inserted, or just before it if it's at the end of a block.
         setEndingSelection(endingSelection().visibleEnd());
     }
 
     rebalanceWhitespace();
 }
 
 }