It's completely unused.
Created attachment 554032 [details] [diff] [review] Patch v1
Comment on attachment 554032 [details] [diff] [review] Patch v1 Does typelib.py not need adjustments here?
(In reply to Kyle Huey [:khuey] (firstname.lastname@example.org) from comment #2) > Does typelib.py not need adjustments here? Ah yes, the comments there can be removed too. Didn't show up in my local grep since I ran it from xpcom/typelib/ only, since MXR doesn't show occurrences in typelib.py due to out of date indexes :-(
Created attachment 554091 [details] [diff] [review] Patch v1.1 http://tbpl.allizom.org/?tree=Try&usebuildbot=1&rev=da307e32d0c2
New try push due to random tree breakage that was going on at the time: http://tbpl.allizom.org/?tree=Try&usebuildbot=1&rev=f701ded4c303 (That will teach me to pull from m-c tip when sending to try) Like the other checkin-needed's I'll likely just do these myself once IT flip my L3 bits in bug 680448.
Added a note to Firefox 9 for developers; since unique pointers appear never to have been fully implemented (let alone used), they were never documented, so this seems to be the most that needs doing (indeed it probably doesn't need mentioning at all).