RefCounted types should not have public destructors, net/ edition

content/public/common/url_fetcher_delegate.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_COMMON_URL_FETCHER_DELEGATE_H_
 #define CONTENT_PUBLIC_COMMON_URL_FETCHER_DELEGATE_H_
 #pragma once
 
 #include "net/url_request/url_fetcher_delegate.h"
 
 namespace content {
 
 // TODO(akalin): Update all users of URLFetcherDelegate to use
 // net::URLFetcherDelegate and remove this file.
 
 class URLFetcher;
 
 // We inherit from net::URLFetcherDelegate so that we can still
 // forward-declare URLFetcherDelegate (which we can't do with a
 // typedef).
-class URLFetcherDelegate : public net::URLFetcherDelegate {};
+class URLFetcherDelegate : public net::URLFetcherDelegate {
+ protected:
+  virtual ~URLFetcherDelegate() {}
+};
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_URL_FETCHER_DELEGATE_H_