This is a testharness.js-based test.
FAIL getUserMedia({doesnotexist:true}) aborts with NOT_SUPPORTED_ERR assert_throws: function "function () {
        navigator.getUserMedia(
            {doesnotexist:true},
            t.step_func(function (stream) {
              assert_unreached("This should never be triggered since the constraints parameter is unrecognized");
            }), t.step_func(function (error) {
              assert_unreached("This should never be triggered since the constraints parameter is unrecognized");
            }));
      }" threw object "ReferenceError: t is not defined" that is not a DOMException NOT_SUPPORTED_ERR: property "code" is equal to undefined, expected 9
Harness: the test ran to completion.

