The v8 implementation needs these to be custom since it can't know the type to convert to between DOMObject and CanvasRenderingContext2D. Files impacted: HTMLCanvasElement.idl Document.idl
Created attachment 28211 [details] patch
Comment on attachment 28211 [details] patch OK, LGTM I'll take care of closing out bug 23809 in favor of this one. Thanks!
Landed as http://trac.webkit.org/changeset/41380