[webkit-reviews] review requested: [Bug 161570] Update the semantics of defined-ness of custom elements per spec changes : [Attachment 287885] Patch

[bugzilla-daemon at webkit.org]

Ryosuke Niwa <rniwa at webkit.org> has asked  for review:
Bug 161570: Update the semantics of defined-ness of custom elements per spec
changes
https://bugs.webkit.org/show_bug.cgi?id=161570

Attachment 287885: Patch

https://bugs.webkit.org/attachment.cgi?id=287885&action=review