Yi Jin 7f9e63b632 Add clear method to ProtoOutputStream so it is reusable by just
rewinding its internal pointer.

Bug: 72319159
Test: atest incidentd_test and atest statsd_test
Change-Id: Id046b987a7460d68300e5d4d46ae56aec1eba2d0
2018-02-09 14:20:48 -08:00
..