Virtual destructors should have virtual keyword.

chrome/browser/renderer_host/safe_browsing_resource_handler.h

 // Copyright (c) 2011 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 CHROME_BROWSER_RENDERER_HOST_SAFE_BROWSING_RESOURCE_HANDLER_H_
 #define CHROME_BROWSER_RENDERER_HOST_SAFE_BROWSING_RESOURCE_HANDLER_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 77 matching lines @@
     DEFERRED_REDIRECT,
   };
 
   SafeBrowsingResourceHandler(ResourceHandler* handler,
                               int render_process_host_id,
                               int render_view_id,
                               ResourceType::Type resource_type,
                               SafeBrowsingService* safe_browsing,
                               ResourceDispatcherHost* resource_dispatcher_host);
 
-  ~SafeBrowsingResourceHandler();
+  virtual ~SafeBrowsingResourceHandler();
 
   // Cancels any in progress safe browsing actions.
   void Shutdown();
 
   // Starts running |url| through the safe browsing check. Returns true if the
   // URL is safe to visit. Otherwise returns false and will call
   // OnUrlCheckResult() when the check has completed.
   bool CheckUrl(const GURL& url);
 
   // Callback for when the safe browsing check (which was initiated by
@@ skipping 45 matching lines @@
   int render_view_id_;
   scoped_refptr<SafeBrowsingService> safe_browsing_;
   ResourceDispatcherHost* rdh_;
   ResourceType::Type resource_type_;
 
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingResourceHandler);
 };
 
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_SAFE_BROWSING_RESOURCE_HANDLER_H_