The isVisibleToUser property of an AccessibilityNodeInfo specifies
whether the user can see the source view. It is used by accessibility
services to figure out whether to focus on a view. This property
was giving a wrong value if the view is covered by another window
such as the keyboard. As a result the user hears one thing but when
double taps interacts with the overlaid window which is another thing.
bug:15938254
Change-Id: Ib9feb20ea422a24a512c47ed1234961ae0386a7f
9ae9ed24aa