CTTE: RenderSVGResourceMasker always has an SVGMaskElement.
Created attachment 211621 [details] Patch
Comment on attachment 211621 [details] Patch r=me
Comment on attachment 211621 [details] Patch Clearing flags on attachment: 211621 Committed r155749: <http://trac.webkit.org/changeset/155749>
All reviewed patches have been landed. Closing bug.