Standardize usage of virtual/override/final in components/

components/suggestions/suggestions_service.h

Index: components/suggestions/suggestions_service.h
diff --git a/components/suggestions/suggestions_service.h b/components/suggestions/suggestions_service.h
index ea385e1a716505f76b707898fd2e6189c3ea048e..22033702d12ecd859f6222d9b2de20a27d8afefb 100644
--- a/components/suggestions/suggestions_service.h
+++ b/components/suggestions/suggestions_service.h
@@ -57,7 +57,7 @@ class SuggestionsService : public KeyedService, public net::URLFetcherDelegate {
       scoped_ptr<SuggestionsStore> suggestions_store,
       scoped_ptr<ImageManager> thumbnail_manager,
       scoped_ptr<BlacklistStore> blacklist_store);
-  virtual ~SuggestionsService();
+  ~SuggestionsService() override;
 
   // Whether this service is enabled.
   static bool IsEnabled();
@@ -124,10 +124,10 @@ class SuggestionsService : public KeyedService, public net::URLFetcherDelegate {
   // net::URLFetcherDelegate implementation.
   // Called when fetch request completes. Parses the received suggestions data,
   // and dispatches them to callbacks stored in queue.
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) override;
+  void OnURLFetchComplete(const net::URLFetcher* source) override;
 
   // KeyedService implementation.
-  virtual void Shutdown() override;
+  void Shutdown() override;
 
   // Load the cached suggestions and service the requestors with them.
   void ServeFromCache();