dart:io | Add SecureSocket.importPrivateCertificates, that reads a PKCS#12 file.

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 */ factory SecureSocket._(RawSecureSocket rawSocket) =>
       new _SecureSocket(rawSocket);
 
   /* patch */ static void initialize({String database,
                                       String password,
-                                      bool useBuiltinRoots: true})
+                                      bool useBuiltinRoots: true,
+                                      bool readOnly: true})
       native "SecureSocket_InitializeLibrary";
 
   /* patch */ static X509Certificate addCertificate(List<int> certificate,
                                                     String trust)
       native "SecureSocket_AddCertificate";
+
+  /* patch */ static importPrivateCertificates(List<int> certificates,
+                                               String password)
+      native "SecureSocket_ImportPrivateCertificates";
+
+  /* patch */ static X509Certificate changeTrust(String nicknameOrDN,
+                                                 String trust)
+      native "SecureSocket_ChangeTrust";
+
+  /* patch */ static removeCertificate(String nicknameOrDN)
+      native "SecureSocket_RemoveCertificate";
 }
 
 
 patch class _SecureFilter {
   /* patch */ factory _SecureFilter() => new _SecureFilterImpl();
 
   /* patch */ static SendPort _newServicePort()
       native "SecureSocket_NewServicePort";
 }
 
@@ skipping 81 matching lines @@
       native "SecureSocket_RegisterBadCertificateCallback";
 
   void registerHandshakeCompleteCallback(Function handshakeCompleteHandler)
       native "SecureSocket_RegisterHandshakeCompleteCallback";
 
   // This is a security issue, as it exposes a raw pointer to Dart code.
   int _pointer() native "SecureSocket_FilterPointer";
 
   List<_ExternalBuffer> buffers;
 }