Handle Form Resubmission

[cretz]

Reposting from CEF forum:

In Chrome, when I attempt to reload a page that was the result of a form submission, I am presented a dialog asking me if I want to resubmit. I want to replicate this in CEF. Based on one other post I would use OnBeforeNavigate (after all, there is NavigationType of NAVIGATION_FORM_RESUBMITTED), but it is never called on Reload for POST (yet it is for GET); I don't think the reload is even happening. Same problem with OnBeforeLoad, it is never called (again, because the page is probably never even reloading).

Will open CEF issue at some point.