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

chrome/browser/bookmarks/bookmark_model_factory.h

Index: chrome/browser/bookmarks/bookmark_model_factory.h
diff --git a/chrome/browser/bookmarks/bookmark_model_factory.h b/chrome/browser/bookmarks/bookmark_model_factory.h
index 17ed822cd40450cd01406a4293bc69f655ee13e3..5c98c21c28b1c74263748296c3875e395230828a 100644
--- a/chrome/browser/bookmarks/bookmark_model_factory.h
+++ b/chrome/browser/bookmarks/bookmark_model_factory.h
@@ -26,16 +26,16 @@ class BookmarkModelFactory : public BrowserContextKeyedServiceFactory {
   friend struct DefaultSingletonTraits<BookmarkModelFactory>;
 
   BookmarkModelFactory();
-  virtual ~BookmarkModelFactory();
+  ~BookmarkModelFactory() override;
 
   // BrowserContextKeyedServiceFactory:
-  virtual KeyedService* BuildServiceInstanceFor(
+  KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* context) 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 ServiceIsNULLWhileTesting() const override;
+  bool ServiceIsNULLWhileTesting() const override;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkModelFactory);
 };