Standardize usage of virtual/override/final in chrome/browser/

chrome/browser/crash_upload_list.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 CHROME_BROWSER_CRASH_UPLOAD_LIST_H_
 #define CHROME_BROWSER_CRASH_UPLOAD_LIST_H_
 
 #include "chrome/browser/upload_list.h"
 
 // An upload list manager for crash reports from breakpad.
 class CrashUploadList : public UploadList {
  public:
   // Static factory method that creates the platform-specific implementation
   // of the crash upload list with the given callback delegate.
   static CrashUploadList* Create(Delegate* delegate);
 
   // Should match kReporterLogFilename in
   // breakpad/src/client/apple/Framework/BreakpadDefines.h.
   static const char* kReporterLogFilename;
 
   // Creates a new crash upload list with the given callback delegate.
   CrashUploadList(Delegate* delegate, const base::FilePath& upload_log_path);
 
  protected:
-  virtual ~CrashUploadList();
+  ~CrashUploadList() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CrashUploadList);
 };
 
 #endif  // CHROME_BROWSER_CRASH_UPLOAD_LIST_H_