[audio] Add express metrics for playback hardening

Test: none
Flag: EXEMPT logging
Bug: 376481063
Change-Id: Ic2957b5d340b83f0045cef45b2d29cbbbb15210a
1 file changed
tree: 62cba7920ac250d3b579e43e9b65d9ce5c8748a9
  1. stats/
  2. OWNERS