1. The accessibility events for switching a widget were dispatched
before we update the important for accessibility property. We
were lucky to get events in some cases since the pages in the
pager had alpha grater than zero, i.e. the page was already
set as important for accessibility, due to a running animation.
2. Accessibility focus clear event not fired if we give focus to
another view. The old focus was correctly cleared just the
events were not dispatched.
bug:8599670
Change-Id: Ia2647d77eaa4e10fbaf3a047dc9ea5b728f9c3c3
4293e233dc