am 19fe783d: am 37155854: Merge "Proper sync-frame detection for sources that don\'t already provide it." into gingerbread

Merge commit '19fe783d83b10ecfae3494f7b1ceff9584ad3839'

* commit '19fe783d83b10ecfae3494f7b1ceff9584ad3839':
  Proper sync-frame detection for sources that don't already provide it.