Check the definition of Document::location when navigated-away-from

[Ms2ger]

Gecko and Chrome seem to return null; unclear if the spec supports that.

[annevk]

I'm not sure what Document::location is. document.location?

[Ms2ger]

The location member of the Document interface.

[annevk]

It seems like it supports being nullable and only returns something useful if the document has a browsing context. Not my favorite way of writing these things down, but...

[annevk]

Okay, so what we might have to do here is check that the document is also "active". I strongly dislike that concept...