replace OVERRIDE and FINAL with override and final in chrome/browser/extensions/

chrome/browser/extensions/api/idle/idle_api.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_IDLE_IDLE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_IDLE_IDLE_API_H_
 
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "chrome/browser/idle.h"
 
 namespace extensions {
 
 // Implementation of the chrome.idle.queryState API.
 class IdleQueryStateFunction : public ChromeAsyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("idle.queryState", IDLE_QUERYSTATE)
 
  protected:
   virtual ~IdleQueryStateFunction() {}
 
   // ExtensionFunction:
-  virtual bool RunAsync() OVERRIDE;
+  virtual bool RunAsync() override;
 
  private:
   void IdleStateCallback(IdleState state);
 };
 
 // Implementation of the chrome.idle.setDetectionInterval API.
 class IdleSetDetectionIntervalFunction : public ChromeSyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("idle.setDetectionInterval",
                              IDLE_SETDETECTIONINTERVAL)
 
  protected:
   virtual ~IdleSetDetectionIntervalFunction() {}
 
   // ExtensionFunction:
-  virtual bool RunSync() OVERRIDE;
+  virtual bool RunSync() override;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_IDLE_IDLE_API_H_