Android 10.0.0 release 40
Merge stage-aosp-master into pi-dev-plus-aosp
am: 286044b8e3

Change-Id: Icfdd57a4f3345a0eca5e5093c0a6236c03c5be88
tree: b6040d3614a1a0de93697b3616da051f6ce7053a
  1. disaster_recovery/
  2. libflags/
  3. .clang-format
  4. Android.bp
  5. OWNERS
  6. PREUPLOAD.cfg