Merge "Rename CONTACT_METADATA_SYNC GService Flag." into nyc-dev
am: 752129929f

* commit '752129929fcbe8d7740d25014f7878e835d4f4ef':
  Rename CONTACT_METADATA_SYNC GService Flag.

Change-Id: Ibef9e072b3ff5216de1802558d93e66661bd7764