Update notifications when no jobs are scheduled.

When inserting an already-completed download, we don't schedule a
job, leaving notifications stale until the next real download comes
along.  This change kicks off a notification update pass in these
cases to ensure we reflect the internal state.

Bug: 29548026
Change-Id: I6ff87d69d83c265738d5e035197204bbb63cfa81
1 file changed