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