Merge "Change RequiresConstructorBarrier default to yes" into nyc-dev
am: d42c845

* commit 'd42c845ac0629c7b8c4d75233fa3df7b8844edec':
  Change RequiresConstructorBarrier default to yes

Change-Id: Ie8350448d65aaf1fc4735c7ac30514d908f2d3a1