Update {virtual,override,final} to follow C++11 style chrome/browser/chromeos/net.

chrome/browser/chromeos/net/network_portal_detector_impl.h

Index: chrome/browser/chromeos/net/network_portal_detector_impl.h
diff --git a/chrome/browser/chromeos/net/network_portal_detector_impl.h b/chrome/browser/chromeos/net/network_portal_detector_impl.h
index bf9070bf6c5d19611e3b2357ddfec766e64dc34b..b02f1e25f929a005f599ec551b2cd7b500bf06df 100644
--- a/chrome/browser/chromeos/net/network_portal_detector_impl.h
+++ b/chrome/browser/chromeos/net/network_portal_detector_impl.h
@@ -65,26 +65,25 @@ class NetworkPortalDetectorImpl
 
   explicit NetworkPortalDetectorImpl(
       const scoped_refptr<net::URLRequestContextGetter>& request_context);
-  virtual ~NetworkPortalDetectorImpl();
+  ~NetworkPortalDetectorImpl() override;
 
   // NetworkPortalDetector implementation:
-  virtual void AddObserver(Observer* observer) override;
-  virtual void AddAndFireObserver(Observer* observer) override;
-  virtual void RemoveObserver(Observer* observer) override;
-  virtual CaptivePortalState GetCaptivePortalState(
-      const std::string& guid) override;
-  virtual bool IsEnabled() override;
-  virtual void Enable(bool start_detection) override;
-  virtual bool StartDetectionIfIdle() override;
-  virtual void SetStrategy(PortalDetectorStrategy::StrategyId id) override;
+  void AddObserver(Observer* observer) override;
+  void AddAndFireObserver(Observer* observer) override;
+  void RemoveObserver(Observer* observer) override;
+  CaptivePortalState GetCaptivePortalState(const std::string& guid) override;
+  bool IsEnabled() override;
+  void Enable(bool start_detection) override;
+  bool StartDetectionIfIdle() override;
+  void SetStrategy(PortalDetectorStrategy::StrategyId id) override;
 
   // NetworkStateHandlerObserver implementation:
-  virtual void DefaultNetworkChanged(const NetworkState* network) override;
+  void DefaultNetworkChanged(const NetworkState* network) override;
 
   // PortalDetectorStrategy::Delegate implementation:
-  virtual int NoResponseResultCount() override;
-  virtual base::TimeTicks AttemptStartTime() override;
-  virtual base::TimeTicks GetCurrentTimeTicks() override;
+  int NoResponseResultCount() override;
+  base::TimeTicks AttemptStartTime() override;
+  base::TimeTicks GetCurrentTimeTicks() override;
 
  private:
   friend class NetworkPortalDetectorImplTest;
@@ -141,9 +140,9 @@ class NetworkPortalDetectorImpl
       const captive_portal::CaptivePortalDetector::Results& results);
 
   // content::NotificationObserver implementation:
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) override;
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
 
   // Stores captive portal state for a |network| and notifies observers.
   void OnDetectionCompleted(const NetworkState* network,