Revert of Have Position deal with more references

Source/core/editing/BreakBlockquoteCommand.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 61 matching lines @@
         return;
 
     RefPtr<Element> breakNode = createBreakElement(document());
 
     bool isLastVisPosInNode = isLastVisiblePositionInNode(visiblePos, topBlockquote);
 
     // If the position is at the beginning of the top quoted content, we don't need to break the quote.
     // Instead, insert the break before the blockquote, unless the position is as the end of the the quoted content.
     if (isFirstVisiblePositionInNode(visiblePos, topBlockquote) && !isLastVisPosInNode) {
         insertNodeBefore(breakNode.get(), topBlockquote);
-        setEndingSelection(VisibleSelection(positionBeforeNode(*breakNode), DOWNSTREAM, endingSelection().isDirectional()));
+        setEndingSelection(VisibleSelection(positionBeforeNode(breakNode.get()), DOWNSTREAM, endingSelection().isDirectional()));
         rebalanceWhitespace();
         return;
     }
 
     // Insert a break after the top blockquote.
     insertNodeAfter(breakNode.get(), topBlockquote);
 
     // If we're inserting the break at the end of the quoted content, we don't need to break the quote.
     if (isLastVisPosInNode) {
-        setEndingSelection(VisibleSelection(positionBeforeNode(*breakNode), DOWNSTREAM, endingSelection().isDirectional()));
+        setEndingSelection(VisibleSelection(positionBeforeNode(breakNode.get()), DOWNSTREAM, endingSelection().isDirectional()));
         rebalanceWhitespace();
         return;
     }
 
     // Don't move a line break just after the caret.  Doing so would create an extra, empty paragraph
     // in the new blockquote.
     if (lineBreakExistsAtVisiblePosition(visiblePos))
         pos = pos.next();
 
     // Adjust the position so we don't split at the beginning of a quote.
@@ skipping 72 matching lines @@
         // If the startNode's original parent is now empty, remove it
         Node* originalParent = ancestors.first().get();
         if (!originalParent->hasChildren())
             removeNode(originalParent);
     }
 
     // Make sure the cloned block quote renders.
     addBlockPlaceholderIfNeeded(clonedBlockquote.get());
 
     // Put the selection right before the break.
-    setEndingSelection(VisibleSelection(positionBeforeNode(*breakNode), DOWNSTREAM, endingSelection().isDirectional()));
+    setEndingSelection(VisibleSelection(positionBeforeNode(breakNode.get()), DOWNSTREAM, endingSelection().isDirectional()));
     rebalanceWhitespace();
 }
 
 } // namespace WebCore