Merge cherrypicks of ['googleplex-android-review.googlesource.com/27403219'] into security-aosp-udc-release.

Change-Id: I37a4fbc21686ebb72ed390bce60452d16a07bf75
tree: c4cd40569d92de1de873c6f1446a4d2e80d3e03b
  1. apex/
  2. app/
  3. system-server/
  4. util/
  5. OWNERS
  6. PREUPLOAD.cfg