Add secure sockets to dart:io

lib/compiler/implementation/lib/io_patch.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 patch class _BufferUtils {
   patch static bool _isBuiltinList(List buffer) {
     throw new UnsupportedError("_isBuiltinList");
   }
 }
 
@@ skipping 149 matching lines @@
 patch class ServerSocket {
   patch factory ServerSocket(String bindAddress, int port, int backlog) {
     return new _ServerSocket(bindAddress, port, backlog);
   }
 }
 
 patch class Socket {
   patch factory Socket(String host, int port) => new _Socket(host, port);
 }
 
+patch class TlsSocket {
+  patch factory TlsSocket(String host, int port) => new _TlsSocket(host, port);
+}
+
 patch class _StdIOUtils {
   patch static _getStdioHandle(Socket socket, int num) {
     throw new UnsupportedError("StdIOUtils._getStdioHandle");
   }
   patch static _getStdioHandleType(int num) {
     throw new UnsupportedError("StdIOUtils._getStdioHandleType");
   }
 }