HistoryDataSourceObserver* mObserver;
HistoryRDFObserver* mObserver;
@interface HistoryDataSource : RDFOutlineViewDataSource{  HistoryDataSourceObserver* mObserver;					// STRONG ref, should be nsCOMPtr but can't  IBOutlet BrowserWindowController* mBrowserWindowController;  BOOL                       mUpdatesEnabled;  BOOL                       mNeedsRefresh;}