Updated reference folder

Author: TylerBrinkley

src/System.Net.Http/ref/System.Net.Http.cs

@@ -62,6 +62,10 @@ protected override void Dispose(bool disposing) { }
         public System.Threading.Tasks.Task<System.IO.Stream> GetStreamAsync(System.Uri requestUri) { throw null; }
         public System.Threading.Tasks.Task<string> GetStringAsync(string requestUri) { throw null; }
         public System.Threading.Tasks.Task<string> GetStringAsync(System.Uri requestUri) { throw null; }
+        public System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PatchAsync(string requestUri, System.Net.Http.HttpContent content) { throw null; }
+        public System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PatchAsync(string requestUri, System.Net.Http.HttpContent content, System.Threading.CancellationToken cancellationToken) { throw null; }
+        public System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PatchAsync(System.Uri requestUri, System.Net.Http.HttpContent content) { throw null; }
+        public System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PatchAsync(System.Uri requestUri, System.Net.Http.HttpContent content, System.Threading.CancellationToken cancellationToken) { throw null; }
         public System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PostAsync(string requestUri, System.Net.Http.HttpContent content) { throw null; }
         public System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PostAsync(string requestUri, System.Net.Http.HttpContent content, System.Threading.CancellationToken cancellationToken) { throw null; }
         public System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PostAsync(System.Uri requestUri, System.Net.Http.HttpContent content) { throw null; }
@@ -150,6 +154,7 @@ public HttpMethod(string method) { }
         public static System.Net.Http.HttpMethod Head { get { throw null; } }
         public string Method { get { throw null; } }
         public static System.Net.Http.HttpMethod Options { get { throw null; } }
+        public static System.Net.Http.HttpMethod Patch { get { throw null; } }
         public static System.Net.Http.HttpMethod Post { get { throw null; } }
         public static System.Net.Http.HttpMethod Put { get { throw null; } }
         public static System.Net.Http.HttpMethod Trace { get { throw null; } }