r47130 only added proper cross-frame handling to the DOMWindowEvent setter. Need to add it to the getter as well. LayoutTests/fast/events/set-event-in-another-frame.html is currently failing when using V8 because of this.
Created attachment 34866 [details] patch
Comment on attachment 34866 [details] patch r=me.
Comment on attachment 34866 [details] patch Nate's a committer, so marking cq-. He can mark it cq+ himself if he'd like the bot to land it for him.
Once again, I've committed a patch and failed to update the bug :-( Landed at 47293.
of course bugzilla-tool land-diff is available to do the landing and bug updating for you if you like. ;)