Android 9.0.0 release 21
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Merge cherrypicks of [5371217, 5371218, 5370861, 5369688, 5370512, 5370513, 5371204, 5371205] into pi-qpr1-release

Change-Id: I2426d117dfad7c184258ea355a041c90063396bc
tree: b1e92ef7d81ec948fc96fbba37cefd4ff83e2ef1
  1. OWNERS
  2. crosshatch-sepolicy.mk
  3. private/
  4. public/
  5. vendor/