main frame - didStartProvisionalLoadForFrame
main frame - didCommitLoadForFrame
frame "<!--frame1-->" - didStartProvisionalLoadForFrame
main frame - didFinishDocumentLoadForFrame
frame "<!--frame1-->" - didCommitLoadForFrame
frame "<!--frame1-->" - didFinishDocumentLoadForFrame
frame "<!--frame1-->" - didHandleOnloadEventsForFrame
main frame - didHandleOnloadEventsForFrame
frame "<!--frame1-->" - didFinishLoadForFrame
main frame - didFinishLoadForFrame