Bring in the latest version of the SDK's WebSocket impl.

lib/src/copy/web_socket.dart

Index: lib/src/copy/web_socket.dart
diff --git a/lib/src/copy/web_socket.dart b/lib/src/copy/web_socket.dart
index 53460baa3ea91b8e82a4ac140a992bf71ad825bf..c77dc2f57b34e45bac2d172b06c15d68ca7dd76c 100644
--- a/lib/src/copy/web_socket.dart
+++ b/lib/src/copy/web_socket.dart
@@ -9,7 +9,8 @@
 // desired public API and to remove "dart:io" dependencies have been made.
 //
 // This is up-to-date as of sdk revision
-// 86227840d75d974feb238f8b3c59c038b99c05cf.
+// e41fb4cafd6052157dbc1490d437045240f4773f.
+
 /**
  * Web socket status codes used when closing a web socket connection.
  */
@@ -18,7 +19,7 @@ abstract class WebSocketStatus {
   static const int GOING_AWAY = 1001;
   static const int PROTOCOL_ERROR = 1002;
   static const int UNSUPPORTED_DATA = 1003;
-  static const int RESERVED_1004  = 1004;
+  static const int RESERVED_1004 = 1004;
   static const int NO_STATUS_RECEIVED = 1005;
   static const int ABNORMAL_CLOSURE = 1006;
   static const int INVALID_FRAME_PAYLOAD_DATA = 1007;