chromium/third_party/blink/web_tests/external/wpt/html/editing/dnd/platform/selection-to-ui.html

<!doctype html>
<html>
  <head>
    <title>Dragging text to UI widgets</title>
  </head>
  <body>

    <ol>
      <li>Select some text on this page.</li>
      <li>Drag the selection to your browser's address field. Fail if the mouse cursor shows that the text cannot be dropped.</li>
      <li>Release it. Pass if the selected text appears in the address field.</li>
      <li>Repeat the test with other UI text inputs.</li>
    </ol>

  </body>
</html>