Umbraco-CMS/src/Umbraco.Web/UmbracoApplication.cs

using Umbraco.Core;
using Umbraco.Web.Runtime;

namespace Umbraco.Web
{
    /// <summary>
    /// Represents the Umbraco global.asax class.
    /// </summary>
    public class UmbracoApplication : UmbracoApplicationBase
    {
        protected override IRuntime GetRuntime()
        {
            return new WebRuntime(this);
        }
    }
}