Add client certificates to HttpsServer and HttpClient.

runtime/bin/secure_socket.h

 // 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.
 
 #ifndef BIN_SECURE_SOCKET_H_
 #define BIN_SECURE_SOCKET_H_
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
@@ skipping 50 matching lines @@
     kWriteEncrypted,
     kNumBuffers
   };
 
   SSLFilter()
       : string_start_(NULL),
         string_length_(NULL),
         handshake_complete_(NULL),
         bad_certificate_callback_(NULL),
         in_handshake_(false),
+        client_certificate_name_(NULL),
         filter_(NULL) { }
 
   void Init(Dart_Handle dart_this);
   void Connect(const char* host,
                int port,
                bool is_server,
                const char* certificate_name,
                bool request_client_certificate,
                bool require_client_certificate,
                bool send_client_certificate);
@@ skipping 16 matching lines @@
 
   uint8_t* buffers_[kNumBuffers];
   int64_t buffer_size_;
   Dart_Handle string_start_;
   Dart_Handle string_length_;
   Dart_Handle dart_buffer_objects_[kNumBuffers];
   Dart_Handle handshake_complete_;
   Dart_Handle bad_certificate_callback_;
   bool in_handshake_;
   bool is_server_;
+  char* client_certificate_name_;
   PRFileDesc* filter_;
 
   void InitializeBuffers(Dart_Handle dart_this);
   void InitializePlatformData();
 
   DISALLOW_COPY_AND_ASSIGN(SSLFilter);
 };
 
 #endif  // BIN_SECURE_SOCKET_H_