Throw SecurityException when secondary user attempts to access BlockedNumberProvider. am: 91df11043f am: 13f79bc1ba
am: db78c1305a

* commit 'db78c1305a83f30c6ee0b2023fe7d472540c5593':
  Throw SecurityException when secondary user attempts to access BlockedNumberProvider.

Change-Id: Ideeb47590e2b873b396a1ddc2322d3d4e64d1e82