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chromium/third_party/blink/web_tests/external/wpt/html/editing/dnd/historical.html 

<!DOCTYPE html>
<title>Historical drag-and-drop features</title>
<meta charset="utf-8">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
"use strict";

test(() => {
  const potentialBadLocations = [
    window,
    document,
    HTMLElement.prototype,
    SVGElement.prototype,
    Document.prototype,
    HTMLDocument.prototype,
    Element.prototype
  ];
  for (const location of potentialBadLocations) {
    assert_false("ondragexit" in location,
      `${location.constructor.name} must not have a property "ondragexit"`);
  }
}, `ondragexit must not be present on the GlobalEventHandlers locations`);
</script>