base

Dispatch View#onVisibilityAggregated to views becoming invisible

When a view becomes newly invisible/gone via setFlags, its visibility
state will have already changed by the time we
dispatchVisibilityAggregated. Since we already do visibility filtering
in the ViewGroup override when we traverse to child views, permit the
normal View implementation to dispatch onVisibilityAggregated if we're
not visible and dispatching visibility false.

Bug 28123146

Change-Id: I528dffe95d2057ef938508b9fb4219c5338b060c