Method resume

src/custom-element.js:1710–1715

* Requests the resource to resume its activity when the document returns * from an inactive state. The scope is up to the actual component. Among * other things the active playback of video or audio content may be * resumed. * * @package @final

()

     * @package @final
     */
    resume() {
      if (!this.isBuilt()) {
        return;
      }
      this.impl_.resumeCallback();
    }

    /**
     * Requests the element to unload any expensive resources when the element