nsNavHistoryResult* NewHistoryResult() { return new nsNavHistoryResult(this, mBundle); }
nsNavHistoryResult* NewHistoryResult(const nsINavHistoryQuery** aQueries, PRUint32 aQueryCount, nsINavHistoryQueryOptions* aOptions) { return new nsNavHistoryResult(this, mBundle, aQueries, aQueryCount, aOptions); }
  nsNavHistoryResult* NewHistoryResult()  { return new nsNavHistoryResult(this, mBundle); }