Oilpan: Replace RefPtrs to Node and its subclasses in core/dom/ with Oilpan transtion types.

Source/core/dom/ContainerNodeAlgorithms.h

 /*
  * Copyright (C) 2007 Apple Inc. All rights reserved.
  *           (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 123 matching lines @@
 #endif
                 // Add the node to the list of nodes to be deleted.
                 // Reuse the nextSibling pointer for this purpose.
                 if (tail)
                     tail->setNextSibling(n);
                 else
                     head = n;
 
                 tail = n;
             } else {
-                RefPtr<GenericNode> protect(n); // removedFromDocument may remove all references to this node.
+                RefPtrWillBeRawPtr<GenericNode> protect(n); // removedFromDocument may remove all references to this node.
                 NodeRemovalDispatcher<GenericNode, GenericNodeContainer, ShouldDispatchRemovalNotification<GenericNode>::value>::dispatch(*n, container);
             }
         }
 
         container.setLastChild(0);
     }
 
 } // namespace Private
 
 } // namespace WebCore
 
 #endif // ContainerNodeAlgorithms_h