R1:69a9b5c3a33e

Fix method visibilities

Summary: This should (hopefully) be the last one of these since D13185 has landed.

Test Plan: `arc unit`

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D13284