TouchExploer computes incorectly the click location.

If there is accessibilty focus and the user touch explores
location that does not change accessibility focus that is
not in the app window, e.g. system bar, double tap does not
click on the system UI affordance. This is due to obsolete
logic from the time where accessibility focus was only in
the active window at the time of double clicking.

bug:17588024

Change-Id: Ib780103e873d8a2afd3b35de3227d54116f1a1b0