Merge Android R

Bug: 168057903
Merged-In: Ida0d85395e88f56b278d69373edaed5d0421d9b4
Change-Id: Ifa482b474843ff704f8f1c3310a9717cded6274b
tree: b1a95b500b18e0ed41f181fba5aca3f4735e5dd4
  1. res/
  2. src/
  3. tests/
  4. Android.bp
  5. AndroidManifest.xml
  6. OWNERS
  7. proguard.flags