Have EditCommand classes deal with Document references, not pointers

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 20 matching lines @@
 #include "core/dom/Text.h"
 #include "core/editing/VisiblePosition.h"
 #include "core/editing/htmlediting.h"
 #include "core/html/HTMLElement.h"
 #include "core/rendering/RenderListItem.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
-BreakBlockquoteCommand::BreakBlockquoteCommand(Document *document)
+BreakBlockquoteCommand::BreakBlockquoteCommand(Document& document)
     : CompositeEditCommand(document)
 {
 }
 
 void BreakBlockquoteCommand::doApply()
 {
     if (endingSelection().isNone())
         return;
 
     // Delete the current selection.
@@ skipping 12 matching lines @@
 
     // pos is a position equivalent to the caret.  We use downstream() so that pos will
     // be in the first node that we need to move (there are a few exceptions to this, see below).
     Position pos = endingSelection().start().downstream();
 
     // Find the top-most blockquote from the start.
     Node* topBlockquote = highestEnclosingNodeOfType(pos, isMailBlockquote);
     if (!topBlockquote || !topBlockquote->parentNode() || !topBlockquote->isElementNode())
         return;
 
-    RefPtr<Element> breakNode = createBreakElement(document());
+    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.get()), DOWNSTREAM, endingSelection().isDirectional()));
         rebalanceWhitespace();
         return;
@@ skipping 94 matching lines @@
 
     // Make sure the cloned block quote renders.
     addBlockPlaceholderIfNeeded(clonedBlockquote.get());
 
     // Put the selection right before the break.
     setEndingSelection(VisibleSelection(positionBeforeNode(breakNode.get()), DOWNSTREAM, endingSelection().isDirectional()));
     rebalanceWhitespace();
 }
 
 } // namespace WebCore