Test that when the hit test of input event in an iframe does not hit anything (not even the html/body), the input event is still captured the iframe's document
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS successfullyParsed is true
TEST COMPLETE
iframe's scroll top is 900
Sending a gesture tap
PASS click_triggered in iframe
Sending left click
PASS click_triggered in iframe
Sending right click
PASS context_menu_triggered in iframe