Snap for 7514173 from 2e563e5f55bf557a1a06d35c1328252078713782 to mainline-mediaprovider-release

Change-Id: I93a2869a060abb25e079ce5e00fd866edb2a1d1d
tree: 700ea9845b8eb164faa41c224cc90afb21e1c734
  1. libbacktrace/
  2. libunwindstack/
  3. OWNERS
  4. PREUPLOAD.cfg