We did this in 4.8 too, to avoid swamping the event queue with stale
motion events. If you're interested in fine grained motion events you
just need to have a responsive main loop. Most applications are only
interested in the latest mouse position in any case.
Fixes performance issues in QML where an onMouseXChanged or
onMouseYChanged in a mouse area does directly or indirectly runs some
heavy computations, slowing rendering to a halt since the main loop is
constantly busy.
Change-Id: I169c96458db4d57b689d6c2c915765b11c35e123
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
d729ca5ece