aggregator: Always handle sync'ed events on output thread

Having all synchronized events always be handled on the output
thread should make synchronization easier.

https://bugzilla.gnome.org/show_bug.cgi?id=781673
1 file changed
tree: a38d7c88869156e3793ca5d708e6d3dc304b3eee
  1. libs/
  2. tests/