Merge "Change RequiresConstructorBarrier default to yes" am: 1633881
am: 6e4bc28

* commit '6e4bc286d4dbc09b4da172dcfeefb7d43cba2688':
  Change RequiresConstructorBarrier default to yes

Change-Id: Ib13066110c865d3558ef04b22dee4176df1fba9a