am 590b73bc: NFC API revision round 2.

Merge commit '590b73bc5b8e5f7b59bff1d9264a52388a5162e6' into gingerbread-plus-aosp

* commit '590b73bc5b8e5f7b59bff1d9264a52388a5162e6':
  NFC API revision round 2.