Second patch in making destructors of refcounted objects private.

net/base/ssl_config_service.h

 // Copyright (c) 2006-2009 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_BASE_SSL_CONFIG_SERVICE_H_
 #define NET_BASE_SSL_CONFIG_SERVICE_H_
 
 #include <vector>
 
 #include "base/ref_counted.h"
@@ skipping 48 matching lines @@
 
   scoped_refptr<X509Certificate> client_cert;
 };
 
 // The interface for retrieving the SSL configuration.  This interface
 // does not cover setting the SSL configuration, as on some systems, the
 // SSLConfigService objects may not have direct access to the configuration, or
 // live longer than the configuration preferences.
 class SSLConfigService : public base::RefCountedThreadSafe<SSLConfigService> {
  public:
-  virtual ~SSLConfigService() {}
-
   // Create an instance of SSLConfigService which retrieves the configuration
   // from the system SSL configuration, or an instance of
   // SSLConfigServiceDefaults if the current system does not have a system SSL
   // configuration.  Note: this does not handle SSLConfigService implementations
   // that are not native to their platform, such as preference-backed ones.
   static SSLConfigService* CreateSystemSSLConfigService();
 
   // May not be thread-safe, should only be called on the IO thread.
   virtual void GetSSLConfig(SSLConfig* config) = 0;
+
+ protected:
+  friend class base::RefCountedThreadSafe<SSLConfigService>;
+
+  virtual ~SSLConfigService() {}
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_SSL_CONFIG_SERVICE_H_