[webmessaging-tests] postMessage with zero or one argument shall throw SyntaxError (#1435)

per the spec https://html.spec.whatwg.org/multipage/comms.html#dom-window-postmessage

View on GitHub: https://github.com/w3c/web-platform-tests/pull/1435

Received on Monday, 1 December 2014 08:10:48 UTC