All other platforms support it.
Created attachment 172831 [details] Patch
Comment on attachment 172831 [details] Patch Good catch, r=me.
Comment on attachment 172831 [details] Patch I'm not sure how it will affect tests, so I'm going to land it tomorrow.
Comment on attachment 172831 [details] Patch Clearing flags on attachment: 172831 Committed r133869: <http://trac.webkit.org/changeset/133869>
All reviewed patches have been landed. Closing bug.