Also present in wk1 it's useful to get the request that originated the download.
Created attachment 145054 [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 r119108: <http://trac.webkit.org/changeset/119108>