RefCounted types should not have public destructors, chrome/ remaining parts

chrome/common/net/gaia/gaia_oauth_client.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/common/net/gaia/gaia_oauth_client.h"
 
 #include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
@@ skipping 16 matching lines @@
     : public base::RefCountedThreadSafe<GaiaOAuthClient::Core>,
       public content::URLFetcherDelegate {
  public:
   Core(const std::string& gaia_url,
        net::URLRequestContextGetter* request_context_getter)
            : gaia_url_(gaia_url),
              num_retries_(0),
              request_context_getter_(request_context_getter),
              delegate_(NULL) {}
 
-  virtual ~Core() { }
-
   void GetTokensFromAuthCode(const OAuthClientInfo& oauth_client_info,
                              const std::string& auth_code,
                              int max_retries,
                              GaiaOAuthClient::Delegate* delegate);
   void RefreshToken(const OAuthClientInfo& oauth_client_info,
                     const std::string& refresh_token,
                     int max_retries,
                     GaiaOAuthClient::Delegate* delegate);
 
   // content::URLFetcherDelegate implementation.
   virtual void OnURLFetchComplete(const content::URLFetcher* source);
 
  private:
+  friend class base::RefCountedThreadSafe<Core>;
+  virtual ~Core() {}
+
   void MakeGaiaRequest(std::string post_body,
                        int max_retries,
                        GaiaOAuthClient::Delegate* delegate);
   void HandleResponse(const content::URLFetcher* source,
                       bool* should_retry_request);
 
   GURL gaia_url_;
   int num_retries_;
   scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
   GaiaOAuthClient::Delegate* delegate_;
@@ skipping 136 matching lines @@
                                    const std::string& refresh_token,
                                    int max_retries,
                                    Delegate* delegate) {
   return core_->RefreshToken(oauth_client_info,
                              refresh_token,
                              max_retries,
                              delegate);
 }
 
 }  // namespace gaia