Virtual destructors should have virtual keyword.

content/browser/renderer_host/file_utilities_message_filter.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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_FILE_UTILITIES_MESSAGE_FILTER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_FILE_UTILITIES_MESSAGE_FILTER_H_
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "content/browser/browser_message_filter.h"
@@ skipping 10 matching lines @@
 class FileUtilitiesMessageFilter : public BrowserMessageFilter {
  public:
   explicit FileUtilitiesMessageFilter(int process_id);
 
   // BrowserMessageFilter implementation.
   virtual void OverrideThreadForMessage(const IPC::Message& message,
                                         BrowserThread::ID* thread);
   virtual bool OnMessageReceived(const IPC::Message& message,
                                  bool* message_was_ok);
  private:
-  ~FileUtilitiesMessageFilter();
+  virtual ~FileUtilitiesMessageFilter();
 
   typedef void (*FileInfoWriteFunc)(IPC::Message* reply_msg,
                                     const base::PlatformFileInfo& file_info);
 
   void OnGetFileSize(const FilePath& path, int64* result);
   void OnGetFileModificationTime(const FilePath& path, base::Time* result);
   void OnOpenFile(const FilePath& path,
                   int mode,
                   IPC::PlatformFileForTransit* result);
 
   // The ID of this process.
   int process_id_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(FileUtilitiesMessageFilter);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_FILE_UTILITIES_MESSAGE_FILTER_H_