Android R Preview 2 (RPP2.200227.009)
Merge stage-aosp-master to aosp-master - DO NOT MERGE

Change-Id: I56ccfdc8b680b14c1f5d6e2337fa6045a26cc4f9
tree: 01451e624cb2de79b1f238ac8a7591280e9daf86
  1. res/
  2. src/
  3. tests/
  4. Android.bp
  5. AndroidManifest.xml
  6. OWNERS