Second patch in making destructors of refcounted objects private.

net/base/ssl_config_service.h

Index: net/base/ssl_config_service.h
===================================================================
--- net/base/ssl_config_service.h	(revision 31079)
+++ net/base/ssl_config_service.h	(working copy)
@@ -66,8 +66,6 @@
 // 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
@@ -77,6 +75,11 @@
 
   // 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