[webkit-reviews] review requested: [Bug 206605] Prevent infinite recursion when upgrading custom elements : [Attachment 407380] Implements the new behavior

[bugzilla-daemon at webkit.org]

Ryosuke Niwa <rniwa at webkit.org> has asked  for review:
Bug 206605: Prevent infinite recursion when upgrading custom elements
https://bugs.webkit.org/show_bug.cgi?id=206605

Attachment 407380: Implements the new behavior

https://bugs.webkit.org/attachment.cgi?id=407380&action=review