Incorporate name changes from HttpAbstractions

Author: pranavkm

src/Microsoft.AspNet.StaticFiles/SendFileMiddleware.cs

@@ -51,15 +51,15 @@ public SendFileMiddleware(RequestDelegate next)
         public Task Invoke(HttpContext context)
         {
             // Check if there is a SendFile feature already present
-            if (context.GetFeature<IHttpSendFile>() == null)
+            if (context.GetFeature<IHttpSendFileFeature>() == null)
             {
-                context.SetFeature<IHttpSendFile>(new SendFileWrapper(context.Response.Body));
+                context.SetFeature<IHttpSendFileFeature>(new SendFileWrapper(context.Response.Body));
             }
 
             return _next(context);
         }
 
-        private class SendFileWrapper : IHttpSendFile
+        private class SendFileWrapper : IHttpSendFileFeature
         {
             private readonly Stream _output;
 

src/Microsoft.AspNet.StaticFiles/SendFileResponseExtensions.cs

@@ -39,7 +39,7 @@ public static bool SupportsSendFile(this HttpResponse response)
             {
                 throw new ArgumentNullException("response");
             }
-            return response.HttpContext.GetFeature<IHttpSendFile>() != null;
+            return response.HttpContext.GetFeature<IHttpSendFileFeature>() != null;
         }
 
         /// <summary>
@@ -72,7 +72,7 @@ public static Task SendFileAsync(this HttpResponse response, string fileName, lo
             {
                 throw new ArgumentNullException("response");
             }
-            IHttpSendFile sendFile = response.HttpContext.GetFeature<IHttpSendFile>();
+            var sendFile = response.HttpContext.GetFeature<IHttpSendFileFeature>();
             if (sendFile == null)
             {
                 throw new NotSupportedException(Resources.Exception_SendFileNotSupported);

src/Microsoft.AspNet.StaticFiles/StaticFileContext.cs

@@ -331,7 +331,7 @@ public async Task SendAsync()
             ApplyResponseHeaders(Constants.Status200Ok);
 
             string physicalPath = _fileInfo.PhysicalPath;
-            IHttpSendFile sendFile = _context.GetFeature<IHttpSendFile>();
+            var sendFile = _context.GetFeature<IHttpSendFileFeature>();
             if (sendFile != null && !string.IsNullOrEmpty(physicalPath))
             {
                 await sendFile.SendFileAsync(physicalPath, 0, _length, _request.CallCanceled);
@@ -377,7 +377,7 @@ internal async Task SendRangeAsync()
             ApplyResponseHeaders(Constants.Status206PartialContent);
 
             string physicalPath = _fileInfo.PhysicalPath;
-            IHttpSendFile sendFile = _context.GetFeature<IHttpSendFile>();
+            var sendFile = _context.GetFeature<IHttpSendFileFeature>();
             if (sendFile != null && !string.IsNullOrEmpty(physicalPath))
             {
                 await sendFile.SendFileAsync(physicalPath, start, length, _request.CallCanceled);