1. If an app naither reattaches nor removes detached view that has
accessibility focus, an exception in the drawing of accessibility
focus occurs since we are trying to compute the focused rect by
offseting the bounds of the focused view in coords of the root
but the focused one is not attached.
bug:7297191
Change-Id: Ib69d52e474b8ea365754f5311f5e809bd757dd1a