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

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

Change-Id: Ib89bd60d3b02f0b3a50a0cff30a28a47e86e076f