chromium/chrome/browser/resources/side_panel/read_anything/language_menu.html

<cr-dialog id="languageMenu" show-on-attach ignore-popstate>
  <div slot="title" class="language-menu-title-bar">
    <div class="language-menu-title">$i18n{readingModeLanguageMenuTitle}</div>
    <cr-icon-button id="close" class="action-icon language-menu-close-button"
        iron-icon="cr:close"
        @click="${this.closeLanguageMenu_}"
        title="$i18n{readingModeLanguageMenuClose}"
        aria-label="$i18n{readingModeLanguageMenuClose}">
    </cr-icon-button>
  </div>
  <div slot="header">
    <cr-input autofocus class="search-field" type="search"
        placeholder="$i18n{readingModeLanguageMenuSearchLabel}"
        @value-changed="${this.onLanguageSearchValueChanged_}"
        .value="${this.languageSearchValue_}">
      <cr-icon slot="inline-prefix" alt="" icon="cr:search"></cr-icon>
      <cr-icon-button iron-icon="cr:clear"
          ?hidden="${!this.languageSearchValue_}"
          slot="inline-suffix"
          @click="${this.onClearSearchClick_}"
          title="$i18n{readingModeLanguageMenuSearchClear}">
      </cr-icon-button>
    </cr-input>
  </div>
  <div slot="body" class="language-menu-body">
    <span id="noResultsMessage" ?hidden="${this.searchHasLanguages()}"
      aria-live="polite">
      $i18n{languageMenuNoResults}
    </span>
    ${this.availableLanguages_.map((item, index) => html`
      <div class="language-line dropdown-line">
        <span id="language-name-${index}" class="language-name">
          ${item.readableLanguage}
        </span>
        <cr-toggle ?checked="${item.checked}" @change="${this.onToggleChange_}"
          data-index="${index}"
          ?disabled="${item.disabled}"
          aria-labelledby="language-name-${index}">
        </cr-toggle>
      </div>
      <span id="notificationText"
          class="notification-error-${item.notification.isError}"
          aria-live="polite">
        ${this.i18nWraper(item.notification.text)}
      </span>
    `)}
    <cr-toast id="toast-in-dialog" duration="${this.toastDuration_}">
      <div id="toastDiv">
        <span id="toastTitle">${this.toastTitle_}</span>
        <span id="toastMessage">$i18n{readingModeVoiceDownloadedMessage}</span>
      </div>
    </cr-toast>
  </div>
</cr-dialog>