Bug 892684 - Clean up some code in AsyncPanZoomController [r=kats]
Bug 892684 - Implement axis locking in AsyncPanZoomController [r=kats,botond]
Bug 915328 - Add support for cross-slide gesture to APZC [r=kats]
Bug 915328 - Metro front-end fixes for cross slide with async panning [r=sfoster]