Per discussion on bug 21868, it should be safe to remove it from the Windows API.
Created attachment 110896 [details] Proposed API removal but keep the ABI.
Comment on attachment 110896 [details] Proposed API removal but keep the ABI. Clearing flags on attachment: 110896 Committed r97476: <http://trac.webkit.org/changeset/97476>
All reviewed patches have been landed. Closing bug.