Throw SecurityException when secondary user attempts to access BlockedNumberProvider.
am: 91df11043f

* commit '91df11043f3f1988dab45e4b33924c4cb642e22b':
  Throw SecurityException when secondary user attempts to access BlockedNumberProvider.

Change-Id: I5f4617b67b0c33acb2edb55adc6db6a9da0af4c3