PictureInPictureEvent() constructor returns a newly
PictureInPictureEvent object with an optional
EventTarget. When the event has both a source and a destination, the
relatedTarget value must be set to the other target.
var pictureInPictureEvent = new PictureInPictureEvent(typeArg[, pictureInPictureInit]);
PictureInPictureEvent() constructor also inherits arguments from
The definition of 'PictureInPictureEvent()' in that specification.
PictureInPictureEventinterface it belongs to.