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

chrome/browser/ui/app_list/app_list_syncable_service.cc

Index: chrome/browser/ui/app_list/app_list_syncable_service.cc
diff --git a/chrome/browser/ui/app_list/app_list_syncable_service.cc b/chrome/browser/ui/app_list/app_list_syncable_service.cc
index 3a6aa09b2e5c932745b53d294c299652aa90ba13..272da314b5ea6f2218c73a8344035364cab09ee2 100644
--- a/chrome/browser/ui/app_list/app_list_syncable_service.cc
+++ b/chrome/browser/ui/app_list/app_list_syncable_service.cc
@@ -184,14 +184,14 @@ class AppListSyncableService::ModelObserver : public AppListModelObserver {
     owner_->model()->AddObserver(this);
   }
 
-  virtual ~ModelObserver() {
+  ~ModelObserver() override {
     owner_->model()->RemoveObserver(this);
     DVLOG(2) << owner_ << ": ModelObserver Removed";
   }
 
  private:
   // AppListModelObserver
-  virtual void OnAppListItemAdded(AppListItem* item) override {
+  void OnAppListItemAdded(AppListItem* item) override {
     DCHECK(!adding_item_);
     adding_item_ = item;  // Ignore updates while adding an item.
     VLOG(2) << owner_ << " OnAppListItemAdded: " << item->ToDebugString();
@@ -199,7 +199,7 @@ class AppListSyncableService::ModelObserver : public AppListModelObserver {
     adding_item_ = NULL;
   }
 
-  virtual void OnAppListItemWillBeDeleted(AppListItem* item) override {
+  void OnAppListItemWillBeDeleted(AppListItem* item) override {
     DCHECK(!adding_item_);
     VLOG(2) << owner_ << " OnAppListItemDeleted: " << item->ToDebugString();
     // Don't sync folder removal in case the folder still exists on another
@@ -210,7 +210,7 @@ class AppListSyncableService::ModelObserver : public AppListModelObserver {
     owner_->RemoveSyncItem(item->id());
   }
 
-  virtual void OnAppListItemUpdated(AppListItem* item) override {
+  void OnAppListItemUpdated(AppListItem* item) override {
     if (adding_item_) {
       // Adding an item may trigger update notifications which should be
       // ignored.