chrome/browser/resources/extensions/install_warnings_dialog.html

<cr-dialog id="dialog" close-text="$i18n{close}" show-on-attach>
  <div slot="title">$i18n{installWarnings}</div>
  <div slot="body">
    <ul>
      ${this.installWarnings.map(item => html`<li>${item}</li>`)}
    </ul>
  </div>
  <div slot="button-container">
    <cr-button class="action-button" @click="${this.onOkClick_}">
      $i18n{ok}
    </cr-button>
  </div>
</cr-dialog>