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

chrome/service/cloud_print/cloud_print_auth.h

Index: chrome/service/cloud_print/cloud_print_auth.h
diff --git a/chrome/service/cloud_print/cloud_print_auth.h b/chrome/service/cloud_print/cloud_print_auth.h
index 1fb3336ffa52033a6759751aed81e60ef9ccc9fc..783d113fe5321c02231293c6fba7c838fc2138b3 100644
--- a/chrome/service/cloud_print/cloud_print_auth.h
+++ b/chrome/service/cloud_print/cloud_print_auth.h
@@ -41,7 +41,6 @@ class CloudPrintAuth
                  const base::DictionaryValue* print_sys_settings,
                  const gaia::OAuthClientInfo& oauth_client_info,
                  const std::string& proxy_id);
-  virtual ~CloudPrintAuth();
 
   // Note:
   //
@@ -83,6 +82,9 @@ class CloudPrintAuth
   virtual std::string GetAuthHeader() OVERRIDE;
 
  private:
+  friend class base::RefCountedThreadSafe<CloudPrintAuth>;
+  virtual ~CloudPrintAuth();
+
   Client* client_;
   gaia::OAuthClientInfo oauth_client_info_;
   scoped_ptr<gaia::GaiaOAuthClient> oauth_client_;