Merge Android R

Bug: 168057903
Merged-In: Id7ed53db36cdb9e96c352253ca5c05cc193bb90b
Change-Id: I31f722e8e4520f9d82b6c96e8fdfd3b39a9559c1
tree: 55518ddec12deb9ea55c19d6286d3c6581b6bcd6
  1. res/
  2. src/
  3. Android.bp
  4. AndroidManifest.xml
  5. CleanSpec.mk
  6. NOTICE
  7. proguard.flags