Standardize usage of virtual/override/final specifiers.

chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h

Index: chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h
diff --git a/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h b/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h
index 28d245c4c3a6893db5c861d718eb9e51b2a51a92..32d7c7ffc65515c69214c284723cb9d858aecf79 100644
--- a/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h
+++ b/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h
@@ -21,11 +21,11 @@ class Profile;
 class AppSyncUIStateWatcher : public AppSyncUIStateObserver {
  public:
   AppSyncUIStateWatcher(Profile* profile, app_list::AppListModel* model);
-  virtual ~AppSyncUIStateWatcher();
+  ~AppSyncUIStateWatcher() override;
 
  private:
   // AppSyncUIStateObserver overrides:
-  virtual void OnAppSyncUIStatusChanged() override;
+  void OnAppSyncUIStatusChanged() override;
 
   AppSyncUIState* app_sync_ui_state_;
   app_list::AppListModel* model_;  // Owned by AppListView