Made CancellationToken optional

Author: khellang

src/Microsoft.AspNet.Http.Abstractions/IFormFile.cs

@@ -53,17 +53,11 @@ public interface IFormFile
         /// <param name="path">The path of the file to create.</param>
         void SaveAs(string path);
 
-        /// <summary>
-        /// Asynchronously saves the contents of the uploaded file.
-        /// </summary>
-        /// <param name="path">The path of the file to create.</param>
-        Task SaveAsAsync(string path);
-
         /// <summary>
         /// Asynchronously saves the contents of the uploaded file.
         /// </summary>
         /// <param name="path">The path of the file to create.</param>
         /// <param name="cancellationToken"></param>
-        Task SaveAsAsync(string path, CancellationToken cancellationToken);
+        Task SaveAsAsync(string path, CancellationToken cancellationToken = default(CancellationToken));
     }
 }

src/Microsoft.AspNet.Http/Features/FormFile.cs

@@ -84,21 +84,12 @@ public void SaveAs(string path)
             }
         }
 
-        /// <summary>
-        /// Asynchronously saves the contents of the uploaded file.
-        /// </summary>
-        /// <param name="path">The path of the file to create.</param>
-        public Task SaveAsAsync(string path)
-        {
-            return SaveAsAsync(path, CancellationToken.None);
-        }
-
         /// <summary>
         /// Asynchronously saves the contents of the uploaded file.
         /// </summary>
         /// <param name="path">The path of the file to create.</param>
         /// <param name="cancellationToken"></param>
-        public async Task SaveAsAsync(string path, CancellationToken cancellationToken)
+        public async Task SaveAsAsync(string path, CancellationToken cancellationToken = default(CancellationToken))
         {
             using (var fileStream = File.Create(path, DefaultBufferSize))
             {