Code review comment for lp://staging/~darkxst/gnome-session/lp1224217

Tim, could be that this has introduced bug?

After I updated gnome-session package I was not able to login in session. And in ubuntu forum there are user with same problem I was experiencing - http://ubuntuforums.org/showthread.php?t=2211609

In .xsession-errors:
init: Failed to obtain gnome-session instance: Unknown parameter: XDG_CURRENT_DESKTOP

I fixed it by adding X-LightDM-DesktopName=GNOME in session's .desktop file. Seems all sessions which will miss X-LightDM-DesktoName wont be able to start.