/usr/share/accounts/ is in evolution-data-server-online-accounts 3.18.5-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/accounts/applications/
/usr/share/accounts/applications/evolution-data-server.application
/usr/share/accounts/service_types/
/usr/share/accounts/service_types/calendar.service-type
/usr/share/accounts/service_types/contacts.service-type
/usr/share/accounts/service_types/mail.service-type
/usr/share/accounts/services/
/usr/share/accounts/services/google-calendar.service
/usr/share/accounts/services/google-contacts.service
/usr/share/accounts/services/google-gmail.service
/usr/share/accounts/services/windows-live-mail.service
/usr/share/accounts/services/yahoo-calendar.service
/usr/share/accounts/services/yahoo-mail.service