/usr/share/gnome-shell/search-providers/gnome-contacts-search-provider.ini is in gnome-contacts 3.8.3-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | [Shell Search Provider]
Title=Gnome Contacts
Icon=x-office-address-book
DesktopId=gnome-contacts.desktop
BusName=org.gnome.Contacts.SearchProvider
ObjectPath=/org/gnome/Contacts/SearchProvider
|