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

<cr-lazy-render-lit
  id="voiceSelectionMenu"
  .template='${() => html`
    <cr-action-menu
        @close="${this.onClose_}"
        @keydown="${this.onVoiceMenuKeyDown_}"
        accessibility-label="$i18n{voiceSelectionLabel}"
        role-description="$i18n{menu}"
    >
      ${this.downloadingMessages_.map((item) => html`
        <span class="dropdown-line download-message">${item}</span>
      `)}

      ${this.voiceGroups_.map((voiceGroup, groupIndex) => html`
        <span class="dropdown-line lang-group-title">
          ${voiceGroup.language}
        </span>

        ${voiceGroup.voices.map((voice, voiceIndex) => html`
            <button data-test-id="${voice.id}"
                class="dropdown-item dropdown-voice-selection-button"
                data-group-index="${groupIndex}"
                data-voice-index="${voiceIndex}"
                @click="${this.onVoiceSelectClick_}">
              <span class="voice-name">
                <cr-icon id="check-mark"
                    class="item-invisible-${!voice.selected} check-mark"
                    icon="read-anything-20:check-mark"
                    aria-label="$i18n{selected}">
                </cr-icon>
                ${voice.title}
              </span>

              <cr-icon-button id="preview-icon"
                  @click="${this.onVoicePreviewClick_}"
                  data-group-index="${groupIndex}"
                  data-voice-index="${voiceIndex}"
                  title="${this.previewLabel_(voice.previewPlaying)}"
                  aria-label="${this.previewAriaLabel_(voice.previewPlaying,voice.title)}"
                  iron-icon="${this.previewIcon_(voice.previewPlaying)}">
              </cr-icon-button>
            </button>
        `)}
      `)}

      <hr class="menu-divider">
      <button
          class="dropdown-item dropdown-voice-selection-button language-menu-button"
          @click="${this.openLanguageMenu_}">
        $i18n{readingModeLanguageMenu}
      </button>

    </cr-action-menu>
  `}'>
</cr-lazy-render-lit>

${this.showLanguageMenuDialog_
  ?  html`
  <language-menu id="languageMenu"
      .enabledLangs="${this.enabledLangs}"
      .voicePackInstallStatus="${this.voicePackInstallStatus}"
      .localeToDisplayName="${this.localeToDisplayName}"
      .lastDownloadedLang="${this.lastDownloadedLang}"
      .selectedLang="${this.selectedVoice?.lang}"
      .availableVoices="${this.availableVoices}"
      @close="${this.onLanguageMenuClose_}">
  </language-menu>
  `
  : ''
}