chromium/third_party/blink/web_tests/external/wpt/html/browsers/browsing-the-web/navigating-across-documents/plugin-document.historical-expected.txt

This is a testharness.js-based test.
[FAIL] Same-origin PDFs must not create accessible Document objects
  assert_throws_dom: function "() => {\n      document.querySelector("iframe").contentWindow.document;\n    }" did not throw
Harness: the test ran to completion.