Enable use of error prone annotations

This is required for ag/26422309

Bug: 327646201
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:e16d9bea19cc092dbe92c1889e8ff4a0e8bf5fc5)
Merged-In: I561d0af95619c70a30fc97e580d7ec8df9120a57
Change-Id: I561d0af95619c70a30fc97e580d7ec8df9120a57
1 file changed