chromium/chrome/browser/resources/settings/safety_hub/extensions_module.html

<style include="cr-shared-style settings-shared">
  :host {
    display: block;
  }
  .icon-blue {
    fill: var(--google-blue-600);
  }

  /* dark mode */
  @media (prefers-color-scheme: dark) {
    .icon-blue {
      fill: var(--google-blue-300);
    }
  }
</style>

<settings-safety-hub-module header="[[headerString_]]"
    header-icon="settings20:my_extensions">
  <div slot="button-container">
    <cr-button id="reviewButton" on-click="onButtonClick_">
      $i18n{safetyCheckReview}
      <iron-icon icon="cr:open-in-new" class="icon-blue" slot="suffix-icon">
      </iron-icon>
    </cr-button>
  </div>
</settings-safety-hub-module>