base

Add accessibility scroll support to some widgets.

1. Added support for accessibility scroll action to
   some widgets that are scrollable.

2. Making the super call when handling an accessibility
   action in the views to call super first to allow
   an accessibility delegate to intercept the call.

bug:5932640

Change-Id: I5eb37d64bf9fba1d5c596981132e0df717e2a18a