Add built-in root certificates to dart:io SecureSocket.

runtime/bin/socket_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 ServerSocket {
   /* patch */ factory ServerSocket(String bindAddress, int port, int backlog) {
     return new _ServerSocket(bindAddress, port, backlog);
   }
 }
 
@@ skipping 90 matching lines @@
         _handlerMask == 0 &&
         _handler != null) {
       _handler.close();
       _handler = null;
     } else {
       _activateHandlers();
     }
   }
 
   OSError _getError() native "Socket_GetError";
- 
+
   int _getPort() native "Socket_GetPort";
 
   void set onError(void callback(e)) {
     _setHandler(_ERROR_EVENT, callback);
   }
 
   void _activateHandlers() {
     if (_canActivateHandlers && !_closed) {
       if (_handlerMask == 0) {
         if (_handler != null) {
@@ skipping 472 matching lines @@
   bool _seenFirstOutEvent = false;
   bool _pipe = false;
   Function _clientConnectHandler;
   Function _clientWriteHandler;
   _SocketInputStream _inputStream;
   _SocketOutputStream _outputStream;
   String _remoteHost;
   int _remotePort;
   static SendPort _socketService;
 }