Handle HttpFeature rename

src/Microsoft.AspNet.Mvc.Core/ActionResults/FilePathResult.cs

@@ -8,7 +8,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNet.FileSystems;
 using Microsoft.AspNet.Hosting;
 using Microsoft.AspNet.Http;
-using Microsoft.AspNet.HttpFeature;
+using Microsoft.AspNet.Http.Interfaces;
 using Microsoft.AspNet.Mvc.Core;
 using Microsoft.Framework.DependencyInjection;
 

src/Microsoft.AspNet.Mvc.WebApiCompatShim/Formatters/HttpResponseMessageOutputFormatter.cs

@@ -6,7 +6,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Net.Http;
 using System.Threading.Tasks;
-using Microsoft.AspNet.HttpFeature;
+using Microsoft.AspNet.Http.Interfaces;
 using Microsoft.Net.Http.Headers;
 
 namespace Microsoft.AspNet.Mvc.WebApiCompatShim

test/Microsoft.AspNet.Mvc.Core.Test/ActionResults/FilePathResultTest.cs

@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNet.FileSystems;
 using Microsoft.AspNet.Hosting;
 using Microsoft.AspNet.Http.Core;
-using Microsoft.AspNet.HttpFeature;
+using Microsoft.AspNet.Http.Interfaces;
 using Microsoft.AspNet.Routing;
 using Microsoft.Framework.DependencyInjection;
 using Microsoft.Framework.DependencyInjection.Fallback;

test/WebSites/FilesWebSite/SendFileMiddleware.cs

@@ -6,7 +6,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Http;
-using Microsoft.AspNet.HttpFeature;
+using Microsoft.AspNet.Http.Interfaces;
 using Microsoft.Framework.Runtime;
 
 namespace FilesWebSite