addDatalistInput_(name, values, onChange, tooltipMessage) {
    this.createRow_(name, tooltipMessage);
    this.latestInput_ = new shakaDemo.DatalistInput(
        this.getLatestSection_(), name, onChange, values);
    return this;
  }
@param {string} name
@param {!Array<string>} values
@param {function(!HTMLInputElement)} onChange
@param {string=} tooltipMessage
@return {!shakaDemo.Config}
@private