Since upgrading Tech Preview from 2.26.1 -> 2.27.2, the remove button for about:overview overview items is broken. We see a broken image placeholder instead of the proper remove icon.
Normally I'd check the web inspector for hints, but the web inspector is itself still broken (bug #202321, pending new shared-mime-info release), so no hints.
This is a regression of the switch to new custom protocols implementation. Epiphany is passing NULL as content type of ephy-resource requests, in which case we should try to guess the mime type, but we are not doing it.
Created attachment 382175 [details]
Thanks for the patch. If this patch contains new public API please make sure it follows the guidelines for new WebKit2 GTK+ API. See http://trac.webkit.org/wiki/WebKitGTK/AddingNewWebKit2API
Committed r251769: <https://trac.webkit.org/changeset/251769>