am 07f3bee2: Push Tag/NdefTag implementation details into the service.

Merge commit '07f3bee2db8b6e93ebbf7222676bd9f468e85569' into gingerbread-plus-aosp

* commit '07f3bee2db8b6e93ebbf7222676bd9f468e85569':
  Push Tag/NdefTag implementation details into the service.