public update(idtoken: string, name: string, picture: string):any {
    var body = { idtoken : idtoken, type: 'update', name: name, picture: picture };
    return this.http.post(global.url + '/api/user', body, {}).map(result =>
    {
      console.log(result);
    });
  }

dialogRef.afterClosed().subscribe(result => {
            if(!isNullOrUndefined(result)) {
                if (!isNullOrUndefined(result.name)) {
                    this.name = result.name;
                }
                if (!isNullOrUndefined(result.image)) {
                    this.profileImage = result.image;
                }
                this.userService.update(this.id_token,this.name, this.profileImage).subscribe(result => console.log(result));
            }
        });