Fix broken errorprone build.

aosp/3261834 was known to have an errorprone error, but it didn't
matter because it was submitted as part of a topic which deleted
that file. But then testcop reverted only part of that topic - see
aosp/3272374 . Reverting this revert will bring back the test
failure. Fix forward instead.

Change-Id: I3f8a3f3b86085ae2232e10142dd7cfaa45be4cd6
Test: TH
Fix: 368382013
1 file changed