Object.preventExtensions() on a Location object should throw a TypeError: - https://html.spec.whatwg.org/#location-preventextensions - https://www.ecma-international.org/ecma-262/7.0/index.html#sec-object.preventextensions Firefox already implements this.
Created attachment 300778 [details] Patch
Comment on attachment 300778 [details] Patch Clearing flags on attachment: 300778 Committed r211778: <http://trac.webkit.org/changeset/211778>
All reviewed patches have been landed. Closing bug.