Extensions not loaded into iframes

[fabn]

I had issues with some missing js features in phantomjs 1.9.8 so I fixed them by using polyfills loaded through page.driver.browser.extensions

However in one of my tests I'm using an iframe and it seems that in that iframe extensions are not loaded because I'm having the same issue I had before creating the extensions itself.

[twalpole]

This seems like it's probably a phantomjs issue more than poltergeist, and not really sure whether poltergeist could even work around it since we have no way of knowing when frames are added/created in the page. Is it still an issue with PhantomJS 2 ?

[twalpole]

ariya/phantomjs#10608 is the phantomjs issue that would need a resolution before we can implement this.