Tests pip video going into fullscreen should exit pip

Going into Picture-in-Picture
EXPECTED (internals.isChangingPresentationMode(video) == 'false') OK
EXPECTED (video.webkitPresentationMode == 'picture-in-picture') OK
Going into Full Screen from Picture-in-Picture
EXPECTED (internals.isChangingPresentationMode(video) == 'false') OK
EXPECTED (internals.isChangingPresentationMode(video) == 'false') OK
EXPECTED (document.webkitCurrentFullScreenElement == '[object HTMLVideoElement]') OK
EXPECTED (video.webkitPresentationMode == 'fullscreen') OK
EXPECTED (internals.isChangingPresentationMode(video) == 'false') OK
Exited Full Screen
END OF TEST