Add a callback to SecureSocket for certificates that fail to be authenticated.

runtime/bin/secure_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 SecureSocket {
   /* patch */ static void initialize({String database,
                                       String password,
                                       bool useBuiltinRoots: true})
   native "SecureSocket_InitializeLibrary";
 }
@@ skipping 34 matching lines @@
   }
 
   void _destroy() native "SecureSocket_Destroy";
 
   void handshake() native "SecureSocket_Handshake";
 
   void init() native "SecureSocket_Init";
 
   int processBuffer(int bufferIndex) native "SecureSocket_ProcessBuffer";
 
+  void registerBadCertificateCallback(Function callback)
+      native "SecureSocket_RegisterBadCertificateCallback";
+
   void registerHandshakeCompleteCallback(Function handshakeCompleteHandler)
       native "SecureSocket_RegisterHandshakeCompleteCallback";
 
   List<_ExternalBuffer> buffers;
 }