Intermittent NOTRUN in /resource-timing/test_resource_timing.https.html

[jdm]

  ▶ Unexpected subtest result in /resource-timing/test_resource_timing.https.html:
  └ NOTRUN [expected FAIL] window.performance.getEntriesByName() and window.performance.getEntriesByNameType() return same data (xmlhttprequest)
  ▶ Unexpected subtest result in /resource-timing/test_resource_timing.https.html:
  └ NOTRUN [expected FAIL] PerformanceEntry has correct name, initiatorType, startTime, and duration (xmlhttprequest)
  ▶ Unexpected subtest result in /resource-timing/test_resource_timing.https.html:
  └ NOTRUN [expected FAIL] PerformanceEntry has correct order of timing attributes (xmlhttprequest)
  ▶ Unexpected subtest result in /resource-timing/test_resource_timing.https.html:
  └ NOTRUN [expected FAIL] PerformanceEntry has correct network transfer attributes (xmlhttprequest)
  ▶ Unexpected subtest result in /resource-timing/test_resource_timing.https.html:
  └ NOTRUN [expected FAIL] PerformanceEntry has correct protocol attribute (xmlhttprequest)

[pshaughn]

If this particular batch are all not running as a set, the onload from this request must not be firing:

servo/tests/wpt/web-platform-tests/resource-timing/test_resource_timing.js

Lines 87 to 90 in 5ef30c6

	var xmlhttp = new XMLHttpRequest();
	url = resolve("resources/gzip_xml.py");
	xmlhttp.open('GET', url, true);
	xmlhttp.send();

I can't think of any particular reason why this request would have intermittent failures, though, and I haven't happened to reproduce it on purpose.