This is a testharness.js-based test.
[FAIL] Create a shared worker in a data url frame
  assert_equals: expected "PASS" but got "SharedWorker construction unexpectedly synchronously failed"
[FAIL] Create a data url shared worker in a data url frame
  assert_equals: expected "PASS" but got "SharedWorker construction unexpectedly synchronously failed"
Harness: the test ran to completion.