chromium/chrome/browser/resources/ash/settings/os_bluetooth_page/os_bluetooth_pairing_dialog.html

<style include="settings-shared">
  #dialog {
    --cr-dialog-top-container-min-height: 0;
  }

  div[slot="body"] {
    height: 426px;
  }
</style>
<cr-dialog id="dialog" show-on-attach>
  <div slot="body">
    <bluetooth-pairing-ui on-finished="closeDialog_">
    </bluetooth-pairing-ui>
  </div>
</cr-dialog>