Call getPackageInfo() with cleared calling identity in ensureSystemPackageName(). Otherwise non-primary users might get a SecurityException. Bug: 145981139 Bug: 148763415 Test: manual Change-Id: I5883e296a0d753e43075cbf0abc5dc4da91e2fca (cherry picked from commit e693b797bcf0be38f0fc9d878bb5278eacf8b4b1)