Update {virtual,override,final} to follow C++11 style in chromeos.

chromeos/geolocation/simple_geolocation_request.h

 // Copyright 2014 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 CHROMEOS_GEOLOCATION_SIMPLE_GEOLOCATION_REQUEST_H_
 #define CHROMEOS_GEOLOCATION_SIMPLE_GEOLOCATION_REQUEST_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
@@ skipping 30 matching lines @@
   typedef base::Callback<void(const Geoposition& /* position*/,
                               bool /* server_error */,
                               const base::TimeDelta elapsed)> ResponseCallback;
 
   // |url| is the server address to which the request wil be sent.
   // |timeout| retry request on error until timeout.
   SimpleGeolocationRequest(net::URLRequestContextGetter* url_context_getter,
                            const GURL& service_url,
                            base::TimeDelta timeout);
 
-  virtual ~SimpleGeolocationRequest();
+  ~SimpleGeolocationRequest() override;
 
   // Initiates request.
   // Note: if request object is destroyed before callback is called,
   // request will be silently cancelled.
   void MakeRequest(const ResponseCallback& callback);
 
   void set_retry_sleep_on_server_error_for_testing(
       const base::TimeDelta value) {
     retry_sleep_on_server_error_ = value;
   }
 
   void set_retry_sleep_on_bad_response_for_testing(
       const base::TimeDelta value) {
     retry_sleep_on_bad_response_ = value;
   }
 
  private:
   // net::URLFetcherDelegate
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) override;
+  void OnURLFetchComplete(const net::URLFetcher* source) override;
 
   // Start new request.
   void StartRequest();
 
   // Schedules retry.
   void Retry(bool server_error);
 
   // Run callback and destroy "this".
   void ReplyAndDestroySelf(const base::TimeDelta elapsed, bool server_error);
 
@@ skipping 35 matching lines @@
 
   // Creation and destruction should happen on the same thread.
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(SimpleGeolocationRequest);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_GEOLOCATION_SIMPLE_GEOLOCATION_REQUEST_H_