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

chrome/browser/devtools/devtools_protocol.h

 // Copyright (c) 2013 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_DEVTOOLS_DEVTOOLS_PROTOCOL_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_PROTOCOL_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 20 matching lines @@
     std::string method_;
     scoped_ptr<base::DictionaryValue> params_;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(Message);
   };
 
   class Command : public Message {
    public:
     Command(int id, const std::string& method, base::DictionaryValue* params);
-    virtual ~Command();
+    ~Command() override;
 
     int id() { return id_; }
     std::string Serialize();
 
     // Creates success response. Takes ownership of |result|.
     scoped_ptr<Response> SuccessResponse(base::DictionaryValue* result);
 
     // Creates error response.
     scoped_ptr<Response> InvalidParamResponse(const std::string& param);
 
@@ skipping 21 matching lines @@
     int id_;
     int error_code_;
     std::string error_message_;
     scoped_ptr<base::DictionaryValue> result_;
 
     DISALLOW_COPY_AND_ASSIGN(Response);
   };
 
   class Notification : public Message {
    public:
-    virtual ~Notification();
+    ~Notification() override;
 
    private:
     friend class DevToolsProtocol;
 
     // Takes ownership of |params|.
     Notification(const std::string& method,
                  base::DictionaryValue* params);
 
     DISALLOW_COPY_AND_ASSIGN(Notification);
   };
 
   // Result ownership is passed to the caller.
   static Command* ParseCommand(base::DictionaryValue* command_dict);
 
   // Result ownership is passed to the caller.
   static Notification* ParseNotification(const std::string& json);
 
   // Result ownership is passed to the caller.
   static Response* ParseResponse(const std::string& json);
 
  private:
 
   DevToolsProtocol() {}
   ~DevToolsProtocol() {}
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_PROTOCOL_H_