Report sync complete when VRI won't draw

There is some checks in performDraw that will skip drawing. For example,
if the display is off or if there's no view. In those cases, we don't
want to wait for a frame since there will be none and instead
immediately report back that the sync for this VRI is complete.

Test: Repro from bug
Fixes: 234426290
Change-Id: I7d5993f9980b9cdafc99a5712e74a4de704aef47