am c8696023: Merge "Document that autoFocus must be called in auto and macro mode." into gingerbread

Merge commit 'c86960236d5b2095c87bf46de2400a905acabee2' into gingerbread-plus-aosp

* commit 'c86960236d5b2095c87bf46de2400a905acabee2':
  Document that autoFocus must be called in auto and macro mode.