if (err != 0) return NS_ERROR_FAILURE;  err = mStore->StringToToken(mEnv, "Hostname", &kToken_HostnameColumn);
nsGlobalHistory::CreateTokens(){  mdb_err err;  NS_PRECONDITION(mStore != nsnull, "not initialized");  if (! mStore)    return NS_ERROR_NOT_INITIALIZED;  err = mStore->StringToToken(mEnv, "ns:history:db:row:scope:history:all", &kToken_HistoryRowScope);  if (err != 0) return NS_ERROR_FAILURE;  err = mStore->StringToToken(mEnv, "ns:history:db:table:kind:history", &kToken_HistoryKind);  if (err != 0) return NS_ERROR_FAILURE;  err = mStore->StringToToken(mEnv, "URL", &kToken_URLColumn);  if (err != 0) return NS_ERROR_FAILURE;  err = mStore->StringToToken(mEnv, "Referrer", &kToken_ReferrerColumn);  if (err != 0) return NS_ERROR_FAILURE;  err = mStore->StringToToken(mEnv, "LastVisitDate", &kToken_LastVisitDateColumn);  if (err != 0) return NS_ERROR_FAILURE;  err = mStore->StringToToken(mEnv, "Name", &kToken_NameColumn);  if (err != 0) return NS_ERROR_FAILURE;  return NS_OK;}