Implements remaining SecurityContext calls for iOS

runtime/bin/secure_socket_boringssl.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_BORINGSSL_H_
 #define BIN_SECURE_SOCKET_BORINGSSL_H_
 
 #if !defined(BIN_SECURE_SOCKET_H_)
 #error Do not include secure_socket_boringssl.h directly. Use secure_socket.h.
 #endif
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
 
 #include <openssl/bio.h>
 #include <openssl/err.h>
 #include <openssl/ssl.h>
 #include <openssl/x509.h>
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
+#include "bin/reference_counting.h"
 #include "bin/socket.h"
 #include "bin/thread.h"
 #include "bin/utils.h"
 
 namespace dart {
 namespace bin {
 
 /* These are defined in root_certificates.cc. */
 extern const unsigned char* root_certificates_pem;
 extern unsigned int root_certificates_pem_length;
 
 /*
  * SSLFilter encapsulates the NSS SSL(TLS) code in a filter, that communicates
  * with the containing _SecureFilterImpl Dart object through four shared
  * ExternalByteArray buffers, for reading and writing plaintext, and
  * reading and writing encrypted text.  The filter handles handshaking
  * and certificate verification.
  */
-class SSLFilter {
+class SSLFilter : public ReferenceCounted<SSLFilter> {
  public:
   // These enums must agree with those in sdk/lib/io/secure_socket.dart.
   enum BufferIndex {
     kReadPlaintext,
     kWritePlaintext,
     kReadEncrypted,
     kWriteEncrypted,
     kNumBuffers,
     kFirstEncrypted = kReadEncrypted
   };
@@ skipping 71 matching lines @@
   Dart_Handle InitializeBuffers(Dart_Handle dart_this);
   void InitializePlatformData();
 
   DISALLOW_COPY_AND_ASSIGN(SSLFilter);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_SECURE_SOCKET_BORINGSSL_H_