The DeadZone is eating all clicks in the bottem-left pixel of the screen. * Ignore mouse clicks for DeadZone, because it exists to compensate for low-precision finger input. * Fix bug where "vertical" orientation consumes events along both the top and the left edge. * Fix orientation for tablets so it correctly consumes events along the top edge. Bug: 20091403 Change-Id: I8e97d894e380ece251f7920e5194c0dee4de0b43