CanvasRenderingContext2D should not have a CanvasRenderingContext parent interface as per: - https://html.spec.whatwg.org/multipage/scripting.html#canvasrenderingcontext2d Firefox and Chrome agree with the specification.
Created attachment 286623 [details] Patch
Comment on attachment 286623 [details] Patch Clearing flags on attachment: 286623 Committed r204745: <http://trac.webkit.org/changeset/204745>
All reviewed patches have been landed. Closing bug.
Reverted r204745 for reason: Broke the Windows build Committed r204748: <http://trac.webkit.org/changeset/204748>
Created attachment 286650 [details] Patch
Created attachment 286651 [details] Patch
Comment on attachment 286651 [details] Patch Clearing flags on attachment: 286651 Committed r204839: <http://trac.webkit.org/changeset/204839>