/usr/share/dbus-1/services/org.gnome.ControlCenter.SearchProvider.service is in gnome-control-center 1:3.18.2-1ubuntu6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | [D-BUS Service]
Name=org.gnome.ControlCenter.SearchProvider
Exec=/usr/lib/gnome-control-center/gnome-control-center-search-provider
|