Remove remaining UniquePtr typedefs am: f0a7045ef5 am: 419c21ff92
Remove remaining UniquePtr typedefs am: f0a7045ef5
am: 419c21ff92

Change-Id: I11838a44f30a8ea611e5241a92683f14528b986d

google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt