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chromium/third_party/blink/web_tests/external/wpt/html/browsers/history/the-location-interface/location_origin.html 

<!doctype html>
<meta charset="utf-8">
<title></title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
  test(function () {
    assert_equals(
      location.origin,
      location.protocol + '//' + location.host,
      "origin"
    );
  }, "location origin");
</script>