main frame - DidStartNavigation
main frame - ReadyToCommitNavigation
main frame - didCommitLoadForFrame
main frame - didFinishDocumentLoadForFrame
main frame - didHandleOnloadEventsForFrame
main frame - didFinishLoadForFrame
Test for https://bugs.webkit.org/show_bug.cgi?id=31227. If it didn't crash, the browser passed the test.