run_webkit_unittests is pretty modest at the moment, but I expect it will grow over time. We should run it on the buildbot now while we still can. I have no idea what's actually involved in making that work.
It seems we should make 'bugzilla-tool land-patches' run it before we bother with the buildbot. Currently there is nearly 100% overlap in the 'bugzilla-tool users' and 'bugzilla-tool hackers', only hackers are gonna break said unit tests.
bug 33432 is at least one dupe of this. *** This bug has been marked as a duplicate of bug 33432 ***