How to implement Dependency Injection by Autofac in MvcApplication class (ASP.NET MVC Global.asax)?

There are a lot of code examples for how to implement Dependency Injection for controller in ASP.NET MVC, but not too much about MvcApplication class in ASP.NET MVC.

Following is my implementation for Dependency Injection in MvcApplication class

public class MvcApplication : System.Web.HttpApplication
    {

        protected void Application_Start()
        {
            RegisterDependencies();
            //pass service into other class that need this service
            var c = new OtherClassNeedService(_IYourService);
        }

        private AutofacDependencyResolver IoCcontainer { get; set; }
        private IYourService _IYourService
        {
            get
            {
                if (IoCcontainer == null) return null;
                return IoCcontainer.ApplicationContainer.Resolve();
            }
        }

        public void RegisterDependencies()
        {
            var builder = new ContainerBuilder();
            builder.RegisterControllers(typeof(MvcApplication).Assembly);

            builder.RegisterType()
                .As(); //.InstancePerHttpRequest(); if added InstancePerHttpRequest, will get error: No scope with a Tag matching 'httpRequest' is visible from the scope in which the instance was requested.

            IContainer container = builder.Build();
            var aResolver = new AutofacDependencyResolver(container);
            DependencyResolver.SetResolver(aResolver);
            IoCcontainer = aResolver;
        }



        protected void Application_End(object sender, EventArgs e)
        {
            IoCcontainer.ApplicationContainer.Dispose();
        }
    }