Commit 6905e9ed885cd1d5be26106d64831a6d35c36bd9 permanently enabled the on-disk cache in EDS for Google Contacts address books, so the option is now redundant.
Commit 6905e9ed885cd1d5be26106d64831a6d35c36bd9 permanently enabled the on-disk cache in EDS for Google Contacts address books, so the option is now redundant.