Remove windows line ending from repo files

visual_studio/NativeClientVSAddIn/UnitTests/TestUtilities.cs

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 namespace UnitTests
 {
   using System;
   using System.Collections.Generic;
   using System.IO;
   using System.Linq;
@@ skipping 443 matching lines @@
       }
 
       foreach (DirectoryInfo subdir in dir.GetDirectories())
       {
         string path = Path.Combine(dest, subdir.Name);
         CopyDirectory(subdir.FullName, path);
       }
     }
   }
 }