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

chrome/browser/sync/glue/non_frontend_data_type_controller.h

Index: chrome/browser/sync/glue/non_frontend_data_type_controller.h
diff --git a/chrome/browser/sync/glue/non_frontend_data_type_controller.h b/chrome/browser/sync/glue/non_frontend_data_type_controller.h
index bcb5b616a12b8fedd735c5046801340004f5ee9e..ad69cd7b4af3822f1546d2a8568fba802d8c9d31 100644
--- a/chrome/browser/sync/glue/non_frontend_data_type_controller.h
+++ b/chrome/browser/sync/glue/non_frontend_data_type_controller.h
@@ -57,18 +57,17 @@ class NonFrontendDataTypeController : public sync_driver::DataTypeController {
       ProfileSyncService* sync_service);
 
   // DataTypeController interface.
-  virtual void LoadModels(
-      const ModelLoadCallback& model_load_callback) override;
-  virtual void StartAssociating(const StartCallback& start_callback) override;
-  virtual void Stop() override;
+  void LoadModels(const ModelLoadCallback& model_load_callback) override;
+  void StartAssociating(const StartCallback& start_callback) override;
+  void Stop() override;
   virtual syncer::ModelType type() const = 0;
   virtual syncer::ModelSafeGroup model_safe_group() const = 0;
-  virtual std::string name() const override;
-  virtual State state() const override;
+  std::string name() const override;
+  State state() const override;
 
   // DataTypeErrorHandler interface.
   // Note: this is performed on the datatype's thread.
-  virtual void OnSingleDataTypeUnrecoverableError(
+  void OnSingleDataTypeUnrecoverableError(
       const syncer::SyncError& error) override;
 
   // Callback to receive background association results.
@@ -91,10 +90,10 @@ class NonFrontendDataTypeController : public sync_driver::DataTypeController {
   // For testing only.
   NonFrontendDataTypeController();
 
-  virtual ~NonFrontendDataTypeController();
+  ~NonFrontendDataTypeController() override;
 
   // DataTypeController interface.
-  virtual void OnModelLoaded() override;
+  void OnModelLoaded() override;
 
   // Start any dependent services that need to be running before we can
   // associate models. The default implementation is a no-op.
@@ -168,7 +167,7 @@ class NonFrontendDataTypeController : public sync_driver::DataTypeController {
   void set_state(State state);
 
   virtual sync_driver::AssociatorInterface* associator() const;
-  virtual sync_driver::ChangeProcessor* GetChangeProcessor() const override;
+  sync_driver::ChangeProcessor* GetChangeProcessor() const override;
 
   State state_;
   StartCallback start_callback_;