Previously in PointerEvents spec v1 (https://www.w3.org/TR/pointerevents/) we had ongotpointercapture and onlostpointercapture attributes as part of the Element. Now we are moving them to GlobalEventHandlers to make them consistent with the other on'event' attributes as the capture events will also bubble similar to other events. Note that this way of listening to the events through on'event' attributes are legacy and should not be mostly used. But this change makes sure they are all consistent.