init: Kill X before processes using /home/chronos/user.
init: Kill X before processes using /home/chronos/user.

This changes the order in which we kill things when the ui
job stops, so that the window manager will keep running up
until X gets killed.

Change-Id: Ibff894c5543c771b83e38e2ea067d526bd8a5625

BUG=chromium-os:7901
TEST=built it and checked that the window manager's log ends with a message saying that the X connection got shut down after i power off or log out

Review URL: http://codereview.chromium.org/3874004

joshfire/chromiumos-platform-init