
        <dd>
          The web application opens with native OS window controls visible but
          with the web contents extended to the rest of the title bar area. The
          app will also be able to specify [=draggable region=]s in the web
          contents to create a customized title bar.
        </dd>
     </dl>
      <p>
        The <code>[=display mode/window-controls-overlay=]</code>
        [=display mode=] can be specified in the
        <code>[=manifest/display_override=]</code> member of