Removed custom object result accepting status code as out of box ObjectResult provides this already.

test/WebSites/FormatterWebSite/ActionResults/CustomObjectResult.cs

@@ -1,25 +0,0 @@
-// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
-
-using System.Threading.Tasks;
-using Microsoft.AspNet.Mvc;
-
-namespace FormatterWebSite
-{
-    public class CustomObjectResult : ObjectResult
-    {
-        public CustomObjectResult(object value, int statusCode) : base(value)
-        {
-            StatusCode = statusCode;
-        }
-
-        public int StatusCode { get; private set; }
-
-        public override Task ExecuteResultAsync(ActionContext context)
-        {
-            context.HttpContext.Response.StatusCode = StatusCode;
-
-            return base.ExecuteResultAsync(context);
-        }
-    }
-}

test/WebSites/FormatterWebSite/Filters/ModelStateValidationFilterAttribute.cs

@@ -11,7 +11,7 @@ namespace FormatterWebSite
         {
             if (!context.ModelState.IsValid)
             {
-                context.Result = new CustomObjectResult(context.ModelState, 400);
+                context.Result = new ObjectResult(context.ModelState) { StatusCode = 400 };
             }
         }
     }