Merge "Add accessibility hooks for Preference, provide a11y header info" into nyc-dev am: cb26d0e1ce am: 5f4f414f9b
am: 476529d676

* commit '476529d676db96c7c7b96bfdbe6b25276ba1e943':
  Add accessibility hooks for Preference, provide a11y header info

Change-Id: I9372caa608d4acd77b94674c940fdcf35cdd5336