The common code logic of HTMLFrameElementBase::isURLAllowed and HTMLPlugInImageElement::allowedToLoadFrameURL can be moved into a single place. I think the best candidate is a new method named Frame::isURLAllowed.
Created attachment 175579 [details] Patch
Comment on attachment 175579 [details] Patch Clearing flags on attachment: 175579 Committed r135503: <http://trac.webkit.org/changeset/135503>
All reviewed patches have been landed. Closing bug.