[dom-tests] Add a test for Node.childNodes. (#1126)

This test was initially written for Mozilla Servo by Tim Taubert; he gave
permission to submit it at
<http://krijnhoetmer.nl/irc-logs/developers/20140729#l-2043>.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/1126

Received on Tuesday, 29 July 2014 14:20:14 UTC