Now that Ustring and String have been unified, WebCore::StringSourceProvider is totally useless.
Created attachment 164004 [details] Patch
Created attachment 164011 [details] Patch
Comment on attachment 164011 [details] Patch r=me
Comment on attachment 164011 [details] Patch Clearing flags on attachment: 164011 Committed r128542: <http://trac.webkit.org/changeset/128542>
All reviewed patches have been landed. Closing bug.