Following <http://trac.webkit.org/projects/webkit/changeset/25783>, window properties, including dialog arguments, are not cleared when a newly created modal dialog loads its document. Therefore the code introduced in <http://trac.webkit.org/projects/webkit/changeset/25576> to protect dialog arguments is redundant. I have a patch that reverts it.
Created attachment 16429 [details] Remove code to restore dialog arguments
Created attachment 16430 [details] Remove code to restore dialog arguments ...without re-introducing coding style errors.
Comment on attachment 16430 [details] Remove code to restore dialog arguments r=me for trunk (since this won't actually change behavior, it's just a cleanup).
Landed in r26584.