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

chrome/browser/intranet_redirect_detector.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_INTRANET_REDIRECT_DETECTOR_H_
 #define CHROME_BROWSER_INTRANET_REDIRECT_DETECTOR_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 28 matching lines @@
     : public net::URLFetcherDelegate,
       public net::NetworkChangeNotifier::IPAddressObserver {
  public:
   // Only the main browser process loop should call this, when setting up
   // g_browser_process->intranet_redirect_detector_.  No code other than the
   // IntranetRedirectDetector itself should actually use
   // g_browser_process->intranet_redirect_detector() (which shouldn't be hard,
   // since there aren't useful public functions on this object for consumers to
   // access anyway).
   IntranetRedirectDetector();
-  virtual ~IntranetRedirectDetector();
+  ~IntranetRedirectDetector() override;
 
   // Returns the current redirect origin.  This will be empty if no redirection
   // is in place.
   static GURL RedirectOrigin();
 
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
  private:
   typedef std::set<net::URLFetcher*> Fetchers;
 
   // Called when the seven second startup sleep or the one second network
   // switch sleep has finished.  Runs any pending fetch.
   void FinishSleep();
 
   // net::URLFetcherDelegate
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) override;
+  void OnURLFetchComplete(const net::URLFetcher* source) override;
 
   // NetworkChangeNotifier::IPAddressObserver
-  virtual void OnIPAddressChanged() override;
+  void OnIPAddressChanged() override;
 
   GURL redirect_origin_;
   Fetchers fetchers_;
   std::vector<GURL> resulting_origins_;
   bool in_sleep_;  // True if we're in the seven-second "no fetching" period
                    // that begins at browser start, or the one-second "no
                    // fetching" period that begins after network switches.
   base::WeakPtrFactory<IntranetRedirectDetector> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(IntranetRedirectDetector);
 };
 
 #endif  // CHROME_BROWSER_INTRANET_REDIRECT_DETECTOR_H_