This is a testharness.js-based test.
[FAIL] Shared worker in subframe
  assert_true: SharedWorker connection should generate an error. expected true got false
[FAIL] Nested worker in shared worker in subframe
  assert_true: SharedWorker connection should generate an error. expected true got false
[FAIL] Nested worker from shared worker in popup
  assert_false: expected false got "Nested workers not supported."
Harness: the test ran to completion.