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

chrome/browser/google/google_url_tracker_factory.h

Index: chrome/browser/google/google_url_tracker_factory.h
diff --git a/chrome/browser/google/google_url_tracker_factory.h b/chrome/browser/google/google_url_tracker_factory.h
index 207af8a422768b84de0abfcca71d4a848143655d..cf0036fd7561c307e8dc79c2db21c6f740fe9a82 100644
--- a/chrome/browser/google/google_url_tracker_factory.h
+++ b/chrome/browser/google/google_url_tracker_factory.h
@@ -25,17 +25,17 @@ class GoogleURLTrackerFactory : public BrowserContextKeyedServiceFactory {
   friend struct DefaultSingletonTraits<GoogleURLTrackerFactory>;
 
   GoogleURLTrackerFactory();
-  virtual ~GoogleURLTrackerFactory();
+  ~GoogleURLTrackerFactory() override;
 
   // BrowserContextKeyedServiceFactory:
-  virtual KeyedService* BuildServiceInstanceFor(
+  KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* profile) const override;
-  virtual void RegisterProfilePrefs(
+  void RegisterProfilePrefs(
       user_prefs::PrefRegistrySyncable* registry) override;
-  virtual content::BrowserContext* GetBrowserContextToUse(
+  content::BrowserContext* GetBrowserContextToUse(
       content::BrowserContext* context) const override;
-  virtual bool ServiceIsCreatedWithBrowserContext() const override;
-  virtual bool ServiceIsNULLWhileTesting() const override;
+  bool ServiceIsCreatedWithBrowserContext() const override;
+  bool ServiceIsNULLWhileTesting() const override;
 
   DISALLOW_COPY_AND_ASSIGN(GoogleURLTrackerFactory);
 };