1 Test entering full screen security restrictions. An iframe without an allow attribute is still permitted to fullscreen if the request comes from the containing document.
3 To test manually, press any key - the page should enter full screen mode.
5 TEST(document.webkitFullscreenEnabled) OK
6 iframe's webkitFullscreenEnabled should be false:
7 TEST(iframeMessage == 'document.webkitFullscreenEnabled == false') OK
8 EVENT(webkitfullscreenchange)
9 SUCCEED - entered full screen!