message: Show incoming verification requests in the 'complete security' phase
  If you click to verify your new sign in on another device, actually
  show the verification request on the 'complete security' screen.
diff: @@ -35,7 +35,18 @@ export default class CompleteSecurity extends React.Component {
  this.state = {
  phase: PHASE_INTRO,
  + verificationRequest: null,
  };
  + MatrixClientPeg.get().on("crypto.verification.request", this.onVerificationRequest);
  + }
  +
  + componentWillUnmount() {
  + if (this.state.verificationRequest) {
  + this.state.verificationRequest.off("change", this.onVerificationRequestChange);
  + }
  + if (MatrixClientPeg.get()) {
  + MatrixClientPeg.get().removeListener("crypto.verification.request", this.onVerificationRequest);
  + }
  }
  onStartClick = async () => {
  @@ -55,6 +66,27 @@ export default class CompleteSecurity extends React.Component {
  }
  }
  + onVerificationRequest = (request) => {
  + if (request.otherUserId !== MatrixClientPeg.get().getUserId()) return;
  +
  + if (this.state.verificationRequest) {
  + this.state.verificationRequest.off("change", this.onVerificationRequestChange);
  + }
  + request.on("change", this.onVerificationRequestChange);
  + this.setState({
  + verificationRequest: request,
  + });
  + }
  +
  + onVerificationRequestChange = () => {
  + if (this.state.verificationRequest.cancelled) {
  + this.state.verificationRequest.off("change", this.onVerificationRequestChange);
  + this.setState({
  + verificationRequest: null,
  + });
  + }
  + }
  +
  onSkipClick = () => {
  this.setState({
  phase: PHASE_CONFIRM_SKIP,
  @@ -87,7 +119,13 @@ export default class CompleteSecurity extends React.Component {
  let icon;
  let title;
  let body;
  - if (phase === PHASE_INTRO) {
  +
  + if (this.state.verificationRequest) {
  + const IncomingSasDialog = sdk.getComponent("views.dialogs.IncomingSasDialog");
  + body = <IncomingSasDialog verifier={this.state.verificationRequest.verifier}
  + onFinished={this.props.onFinished}
  + />;
  + } else if (phase === PHASE_INTRO) {
  icon = <span className="mx_CompleteSecurity_headerIcon mx_E2EIcon_warning"></span>;
  title = _t("Complete security");
  body = (
  