Virtual destructors should have virtual keyword.

net/socket/ssl_client_socket_mac.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_SOCKET_SSL_CLIENT_SOCKET_MAC_H_
 #define NET_SOCKET_SSL_CLIENT_SOCKET_MAC_H_
 #pragma once
 
 #include <Security/Security.h>
 
@@ skipping 20 matching lines @@
   // Takes ownership of the |transport_socket|, which must already be connected.
   // The hostname specified in |host_and_port| will be compared with the name(s)
   // in the server's certificate during the SSL handshake.  If SSL client
   // authentication is requested, the host_and_port field of SSLCertRequestInfo
   // will be populated with |host_and_port|.  |ssl_config| specifies
   // the SSL settings.
   SSLClientSocketMac(ClientSocketHandle* transport_socket,
                      const HostPortPair& host_and_port,
                      const SSLConfig& ssl_config,
                      CertVerifier* cert_verifier);
-  ~SSLClientSocketMac();
+  virtual ~SSLClientSocketMac();
 
   // SSLClientSocket methods:
   virtual void GetSSLInfo(SSLInfo* ssl_info);
   virtual void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info);
   virtual NextProtoStatus GetNextProto(std::string* proto);
 
   // StreamSocket methods:
   virtual int Connect(CompletionCallback* callback);
   virtual void Disconnect();
   virtual bool IsConnected() const;
@@ skipping 111 matching lines @@
   // These are the IOBuffers used for operations on the underlying transport.
   scoped_refptr<IOBuffer> read_io_buf_;
   scoped_refptr<IOBuffer> write_io_buf_;
 
   BoundNetLog net_log_;
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_SSL_CLIENT_SOCKET_MAC_H_