I was bit by this while playing with <svg> breakpoint styles.
Created attachment 300499 [details] Patch
Comment on attachment 300499 [details] Patch r=me
Comment on attachment 300499 [details] Patch Clearing flags on attachment: 300499 Committed r211640: <http://trac.webkit.org/changeset/211640>
All reviewed patches have been landed. Closing bug.