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

chrome/browser/extensions/api/messaging/native_message_process_host.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_NATIVE_MESSAGE_PROCESS_HOST_H_
 #define CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGE_PROCESS_HOST_H_
 
 #include <queue>
 #include <string>
 
@@ skipping 21 matching lines @@
 //
 // This class must only be created, called, and deleted on the IO thread.
 // Public methods typically accept callbacks which will be invoked on the UI
 // thread.
 class NativeMessageProcessHost :
 #if defined(OS_POSIX)
     public base::MessageLoopForIO::Watcher,
 #endif  // !defined(OS_POSIX)
     public NativeMessageHost {
  public:
-  virtual ~NativeMessageProcessHost();
+  ~NativeMessageProcessHost() override;
 
   // Create using specified |launcher|. Used in tests.
   static scoped_ptr<NativeMessageHost> CreateWithLauncher(
       const std::string& source_extension_id,
       const std::string& native_host_name,
       scoped_ptr<NativeProcessLauncher> launcher);
 
   // extensions::NativeMessageHost implementation.
-  virtual void OnMessage(const std::string& message) override;
-  virtual void Start(Client* client) override;
-  virtual scoped_refptr<base::SingleThreadTaskRunner> task_runner()
-      const override;
+  void OnMessage(const std::string& message) override;
+  void Start(Client* client) override;
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner() const override;
 
 #if defined(OS_POSIX)
   // MessageLoopForIO::Watcher interface
-  virtual void OnFileCanReadWithoutBlocking(int fd) override;
-  virtual void OnFileCanWriteWithoutBlocking(int fd) override;
+  void OnFileCanReadWithoutBlocking(int fd) override;
+  void OnFileCanWriteWithoutBlocking(int fd) override;
 #endif  // !defined(OS_POSIX)
 
   // Try and read a single message from |read_file_|. This should only be called
   // in unittests when you know there is data in the file.
   void ReadNowForTesting();
 
  private:
   NativeMessageProcessHost(const std::string& source_extension_id,
                            const std::string& native_host_name,
                            scoped_ptr<NativeProcessLauncher> launcher);
@@ skipping 71 matching lines @@
   bool write_pending_;
 
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeMessageProcessHost);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGE_PROCESS_HOST_H_