Revert "Switch libraries to using new tags."

sdk/lib/io/secure_socket.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.
 
-part of dart.io;
-
 /**
  * SecureSocket provides a secure (SSL or TLS) client connection to a server.
  * The certificate provided by the server is checked
  * using the certificate database provided in setCertificateDatabase.
  */
 abstract class SecureSocket implements Socket {
   /**
    * Constructs a new secure client socket and connect it to the given
    * host on the given port. The returned socket is not yet connected
    * but ready for registration of callbacks.  If sendClientCertificate is
@@ skipping 653 matching lines @@
   void destroy();
   void handshake();
   void init();
   X509Certificate get peerCertificate;
   int processBuffer(int bufferIndex);
   void registerBadCertificateCallback(Function callback);
   void registerHandshakeCompleteCallback(Function handshakeCompleteHandler);
 
   List<_ExternalBuffer> get buffers;
 }