This is a testharness.js-based test.
[FAIL] Test Window.isSecureContext in an iframe loading a data: URL
  assert_true: a data: URL in an iframe should create a Secure Context when its creator is a Secure Context expected true got false
[FAIL] Test Window.isSecureContext in a sandboxed iframe loading a data: URL
  assert_true: a data: URL in a sandboxed iframe should create a Secure Context when its creator is a Secure Context expected true got false
Harness: the test ran to completion.