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

chrome/browser/extensions/api/messaging/extension_message_port.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_EXTENSIONS_API_MESSAGING_EXTENSION_MESSAGE_PORT_H_
 #define CHROME_BROWSER_EXTENSIONS_API_MESSAGING_EXTENSION_MESSAGE_PORT_H_
 
 #include "chrome/browser/extensions/api/messaging/message_service.h"
 
 class GURL;
 
 namespace content {
 class RenderProcessHost;
 }  // namespace content
 
 namespace extensions {
 
 // A port that manages communication with an extension.
 class ExtensionMessagePort : public MessageService::MessagePort {
  public:
   ExtensionMessagePort(content::RenderProcessHost* process,
                        int routing_id,
                        const std::string& extension_id);
-  virtual void DispatchOnConnect(
-      int dest_port_id,
-      const std::string& channel_name,
-      const base::DictionaryValue& source_tab,
-      const std::string& source_extension_id,
-      const std::string& target_extension_id,
-      const GURL& source_url,
-      const std::string& tls_channel_id) override;
-  virtual void DispatchOnDisconnect(int source_port_id,
-                                    const std::string& error_message) override;
-  virtual void DispatchOnMessage(const Message& message,
-                                 int target_port_id) override;
-  virtual void IncrementLazyKeepaliveCount() override;
-  virtual void DecrementLazyKeepaliveCount() override;
-  virtual content::RenderProcessHost* GetRenderProcessHost() override;
+  void DispatchOnConnect(int dest_port_id,
+                         const std::string& channel_name,
+                         const base::DictionaryValue& source_tab,
+                         const std::string& source_extension_id,
+                         const std::string& target_extension_id,
+                         const GURL& source_url,
+                         const std::string& tls_channel_id) override;
+  void DispatchOnDisconnect(int source_port_id,
+                            const std::string& error_message) override;
+  void DispatchOnMessage(const Message& message, int target_port_id) override;
+  void IncrementLazyKeepaliveCount() override;
+  void DecrementLazyKeepaliveCount() override;
+  content::RenderProcessHost* GetRenderProcessHost() override;
 
  private:
   content::RenderProcessHost* process_;
   int routing_id_;
   std::string extension_id_;
   void* background_host_ptr_;  // used in IncrementLazyKeepaliveCount
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_MESSAGING_EXTENSION_MESSAGE_PORT_H_