Merge Android R (rvc-dev-plus-aosp-without-vendor@6692709)

Bug: 166295507
Merged-In: I4cefe39b93fec5647a15bc2d986a946798b6de9b
Change-Id: I23245c41193902c90a8fe44ec44ce91d76cdf294
tree: 41ec9c449271550f5908b7d34d2b359c924baab1
  1. res/
  2. src/
  3. tests/
  4. Android.bp
  5. AndroidManifest.xml
  6. NOTICE
  7. OWNERS
  8. proguard.flags