"storage" parameter will allow more options on how long setting will persist. Possible options are: "window.localStorage", "window.sessionStorage" and "null".
Created attachment 193756 [details] Patch
Comment on attachment 193756 [details] Patch Clearing flags on attachment: 193756 Committed r146317: <http://trac.webkit.org/changeset/146317>
All reviewed patches have been landed. Closing bug.