R1:db3ef4021a5d

Freeze the "phriction.info" Conduit API method

Summary: Ref T13077. Freeze "phriction.info" in favor of the more modern "phriction.document.search".

Test Plan: Reviewed older method in web UI, saw frozen markers.

Maniphest Tasks: T13077

Differential Revision: https://secure.phabricator.com/D19113