Re: [custom-elements-tests] Fix observedAttributes test to ensure attributeChangedCallback exists (#3175)

LGTM. Might be good to add a test ensuring that an error thrown by observedAttributes is *not* rethrown if attributeChangedCallback is undefined.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/3175#issuecomment-225995104

Received on Tuesday, 14 June 2016 19:48:08 UTC