Summary: Instead of installing some global mutable thing, pass it down. This also eliminates the rather gnarly side-effect of instantiating some visitor and suddenly logging information in an entirely different place.
Reviewed By: oprisnik
Differential Revision: D14131253
fbshipit-source-id: 760c6a3f85056e334ac1149c76ca4126fbfa7da4
d8d01b4a6f