Method toggleInputClass_

src/input.js:166–173

* @param {!./service/ampdoc-impl.AmpDoc} ampdoc * @param {string} clazz * @param {boolean} on * @private

(ampdoc, clazz, on)

   * @private
   */
  toggleInputClass_(ampdoc, clazz, on) {
    ampdoc.waitForBodyOpen().then((body) => {
      const vsync = Services./*OK*/ vsyncFor(this.win);
      vsync.mutate(() => {
        body.classList.toggle(clazz, on);
      });
    });
  }

  /**
   * @param {!Event} e