Created attachment 648713 [details] [diff] [review]
Comment on attachment 648713 [details] [diff] [review]
Please either document that GetModifiableMapped acts like operator new (returns a 0-refcount object) or just switch it to returing already_AddRefed.
r=me with that.
Backed out with the mass tree revert to get rid of the OS X M5 orange: