chromium/chrome/browser/resources/settings/performance_page/tab_discard/exception_edit_input.html

<cr-input id="input" label="$i18n{addSite}" aria-label$="$i18n{editSiteTitle}"
    placeholder="example.com" value="{{rule}}" on-input="validate"
    error-message="[[errorMessage]]" invalid="[[inputInvalid]]"
    spellcheck="false" autofocus>
</cr-input>