set noparent

# Bug component: 78010

jeffdq@google.com
juliacr@google.com

aioana@google.com
aroederer@google.com
asc@google.com
iyz@google.com
juliatuttle@google.com
kurucz@google.com
liuyining@google.com
lynhan@google.com
matiashe@google.com
valiiftime@google.com
yurilin@google.com

per-file MediaNotificationProcessor.java = ethibodeau@google.com
