chromium/chrome/browser/resources/ash/settings/os_languages_page/os_add_languages_dialog.html

<!-- TODO(crbug.com/1201535): Move everything to the parent element
     (<os-settings-input-page>), as this element is trivial. -->
<!-- Note: We currently don't display any "suggested items", nor do we
      show the user languages prohibited by policy. -->
<os-settings-add-items-dialog
    items="[[getLanguages_(languages.supported, languages.enabled.*)]]"
    header="$i18n{addLanguagesDialogTitle}"
    search-label="$i18n{searchLanguages}"
    on-items-added="onItemsAdded_">
</os-settings-add-items-dialog>