Code review comment for lp:~mir-team/mir/allow-lock-surf-orientation

I've been trying to integrate with the system rotation instead of doing it myself for neverball, neverputt and tuxracer.

mir_surface_set_preferred_orientation doesn't seem to do anything on my bq aquaris, with or without X-Ubuntu-Supported-Orientations in the desktop file, is this due to missing shell support?