start() {
    if (!this.started_) {
      this.started_ = true;
      // Caller initiates offer to peer.
      this.createOffer_();
    }
  }
/**
   * Starts the PeerConnection with any added streams.
   */
Starts the PeerConnection with any added streams.
Starts the PeerConnection with any added streams .
start() {
    if (!this.started_) {
      this.started_ = true;
      this.createOffer_();
    }
  }
start ( ) { if ( ! this . started_ ) { this . started_ = true ; this . createOffer_ ( ) ; } }
Starts the PeerConnection with any added streams.
Starts the PeerConnection with any added streams .
// Caller initiates offer to peer.