/etc/ConsoleKit/seats.d/00-primary.seat is in consolekit 0.4.5-3.1ubuntu2.
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 | [Seat Entry]
Version=1.0
Name=Primary seat
Hidden=false
Devices=
|