message: Use DialogButtons in QuestionDialog
  Use DialogButtons to eliminate duplicate button code.
diff: @@ -18,7 +18,6 @@ limitations under the License.
  import React from 'react';
  import sdk from '../../../index';
  import { _t } from '../../../languageHandler';
  -import classnames from 'classnames';
  export default React.createClass({
  displayName: 'QuestionDialog',
  @@ -53,30 +52,27 @@ export default React.createClass({
  render: function() {
  const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
  - const cancelButton = this.props.hasCancelButton ? (
  - <button onClick={this.onCancel}>
  - { _t("Cancel") }
  - </button>
  - ) : null;
  - const buttonClasses = classnames({
  - mx_Dialog_primary: true,
  - danger: this.props.danger,
  - });
  + const DialogButtons = sdk.getComponent('views.elements.DialogButtons');
  + let primaryButtonClass = "";
  + if (this.props.danger) {
  + primaryButtonClass = "danger";
  + }
  return (
  <BaseDialog className="mx_QuestionDialog" onFinished={this.props.onFinished}
  onEnterPressed={this.onOk}
  title={this.props.title}
  + focus={this.props.focus}
  >
  <div className="mx_Dialog_content">
  { this.props.description }
  - </div>
  - <div className="mx_Dialog_buttons">
  - <button className={buttonClasses} onClick={this.onOk} autoFocus={this.props.focus}>
  - { this.props.button || _t('OK') }
  - </button>
  + </div>.
  + <DialogButtons primaryButton={this.props.button || _t('OK')}
  + onPrimaryButtonClick={this.onOk}
  + primaryButtonClass={primaryButtonClass}
  + onCancel={this.onCancel}
  + >
  { this.props.extraButtons }
  - { cancelButton }
  - </div>
  + </DialogButtons>
  </BaseDialog>
  );
  },
  