chrome/browser/resources/options/language_add_language_overlay.html

<div id="add-language-overlay-page" class="page" hidden>
  <div class="close-button"></div>
  <!-- TODO(kevers): Fix format of i18n-content labels -->
  <h1 i18n-content="add_language_title"></h1>
<if expr="pp_ifdef('chromeos')">
  <div class="content-area">
    <ul id="add-language-overlay-language-list">
    </ul>
  </div>
  <div class="action-area button-strip">
    <button id="add-language-overlay-cancel-button" i18n-content="cancel">
    </button>
  </div>
</if>
<if expr="not pp_ifdef('chromeos')">
  <div class="content-area">
    <span i18n-content="add_language_select_label"></span>
    <select id="add-language-overlay-language-list"></select>
  </div>
  <div class="action-area button-strip">
    <button id="add-language-overlay-cancel-button" i18n-content="cancel">
    </button>
    <button id="add-language-overlay-ok-button" i18n-content="ok"></button>
  </div>
</if>
</div>