/usr/share/upstart/sessions/session-migration.conf is in session-migration 0.2.3.
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 7 8 | description "Session Migration"
author "Iain Lane <iain.lane@canonical.com>"
start on (started dbus and starting xsession-init)
task
exec session-migration
|