This is a testharness.js-based test.
Found 5 FAIL, 0 TIMEOUT, 0 NOTRUN.
[FAIL] PerformanceResourceTiming interface: attribute workerMatchedRouterSource
  assert_true: The prototype object must have a property "workerMatchedRouterSource" expected true got false
[FAIL] PerformanceResourceTiming interface: attribute workerFinalRouterSource
  assert_true: The prototype object must have a property "workerFinalRouterSource" expected true got false
[FAIL] PerformanceResourceTiming interface: resource must inherit property "workerMatchedRouterSource" with the proper type
  assert_inherits: property "workerMatchedRouterSource" not found in prototype chain
[FAIL] PerformanceResourceTiming interface: resource must inherit property "workerFinalRouterSource" with the proper type
  assert_inherits: property "workerFinalRouterSource" not found in prototype chain
[FAIL] PerformanceResourceTiming interface: default toJSON operation on resource
  assert_true: property "workerMatchedRouterSource" should be present in the output of PerformanceResourceTiming.prototype.toJSON() expected true got false
Harness: the test ran to completion.