chromium/third_party/blink/web_tests/fast/js/construct-global-object-expected.txt

This page tests which object prototype is used when calling "new" across windows. If the test passes, you'll see a series of PASS messages below.

PASS: o instanceof frames[0].Object should be true and is.
PASS: o.__proto__.__proto__ === frames[0].Object.prototype should be true and is.