Virtual destructors should have virtual keyword.

chrome/browser/net/url_request_slow_http_job.h

 // Copyright (c) 2010 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.
 //
 // A URLRequestMockHTTPJob class that inserts a time delay in processing.
 
 #ifndef CHROME_BROWSER_NET_URL_REQUEST_SLOW_HTTP_JOB_H_
 #define CHROME_BROWSER_NET_URL_REQUEST_SLOW_HTTP_JOB_H_
 #pragma once
 
@@ skipping 10 matching lines @@
 
   // Adds the testing URLs to the net::URLRequestFilter.
   static void AddUrlHandler(const FilePath& base_path);
 
   // Given the path to a file relative to base_path_, construct a mock URL.
   static GURL GetMockUrl(const FilePath& path);
 
   virtual void Start();
 
  private:
-  ~URLRequestSlowHTTPJob();
+  virtual ~URLRequestSlowHTTPJob();
 
   void RealStart();
 
   base::OneShotTimer<URLRequestSlowHTTPJob> delay_timer_;
 
   // This is the file path leading to the root of the directory to use as the
   // root of the http server.
   static FilePath base_path_;
 };
 
 #endif  // CHROME_BROWSER_NET_URL_REQUEST_SLOW_HTTP_JOB_H_