Bug 872561 - Loosening the elementInView and also checking the centre of the element is in view. r=mdas, a=test-only
Bug 877025 - Don't set 'firstShow' on the controls for a video that is already playing. r=dolske, a=tef+
Bug 868047 - Use a PresShell ID to eliminate stale APZC events. r=roc, r=BenWa, a=akeybl
Bug 872219 - Part 1: B2G SMS - Check the number of segments in getSegmentInfoForText(). r=gene, a=lsblakk
Bug 872219 - Part 2: Marionette test cases. r=gene, a=lsblakk