chromium/chrome/browser/resources/ash/settings/device_page/storage_external_entry.html

<style include="settings-shared">
  settings-toggle-button {
    margin-inline-end: var(--cr-section-padding);
    margin-inline-start: var(--cr-section-indent-padding);
    padding-inline-end: 0;
    padding-inline-start: 0;
  }
</style>
<settings-toggle-button class="hr"
    pref="{{visiblePref_}}"
    label="[[label]]"
    on-settings-boolean-control-change="onVisibleChange_">
</settings-toggle-button>