[custom-elements-tests] Add test-case that changing the value of the is attribute must not affec... (#852)

Add test-case that changing the value of the is attribute must not affect this element's custom element type after a custom element is instantiated.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/852

Received on Saturday, 12 April 2014 04:11:20 UTC