http://build.webkit.org/LeaksViewer/?url=%2Fresults%2FLion%20Intel%20Leaks%2Fr100308%20%28129%29%2F shows that ResourceRequest::setStorageSession is leaking. Looks like we're missing a .adoptNS.
<rdar://problem/10450713>
Created attachment 115250 [details] Patch
Comment on attachment 115250 [details] Patch Committed in http://trac.webkit.org/changeset/100343