Parameter to Node.lookupPrefix() / lookupNamespaceURI() / isDefaultNamespace() should be mandatory: - https://dom.spec.whatwg.org/#node Firefox and Chrome both agree with the specification.
Created attachment 284341 [details] Patch
Comment on attachment 284341 [details] Patch Clearing flags on attachment: 284341 Committed r203604: <http://trac.webkit.org/changeset/203604>
All reviewed patches have been landed. Closing bug.