/usr/share/gnome-shell/search-providers/nautilus-search-provider.ini is in nautilus-data 1:3.18.4.is.3.14.3-0ubuntu4.
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 | [Shell Search Provider]
DesktopId=org.gnome.Nautilus.desktop
BusName=org.gnome.Nautilus
ObjectPath=/org/gnome/Nautilus/SearchProvider
Version=2
|