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

chrome/browser/ui/tab_modal_confirm_dialog_delegate.h

Index: chrome/browser/ui/tab_modal_confirm_dialog_delegate.h
diff --git a/chrome/browser/ui/tab_modal_confirm_dialog_delegate.h b/chrome/browser/ui/tab_modal_confirm_dialog_delegate.h
index b2f88a8b72782a27d05795a9db4c46c08812f216..f8f71251368fc2d22dd0fc67562c5803333f6c60 100644
--- a/chrome/browser/ui/tab_modal_confirm_dialog_delegate.h
+++ b/chrome/browser/ui/tab_modal_confirm_dialog_delegate.h
@@ -36,7 +36,7 @@ class TabModalConfirmDialogCloseDelegate {
 class TabModalConfirmDialogDelegate : public content::NotificationObserver {
  public:
   explicit TabModalConfirmDialogDelegate(content::WebContents* web_contents);
-  virtual ~TabModalConfirmDialogDelegate();
+  ~TabModalConfirmDialogDelegate() override;
 
   void set_close_delegate(TabModalConfirmDialogCloseDelegate* close_delegate) {
     close_delegate_ = close_delegate;
@@ -99,9 +99,9 @@ class TabModalConfirmDialogDelegate : public content::NotificationObserver {
 
   // content::NotificationObserver implementation.
   // Watch for a new load or a closed tab and dismiss the dialog if they occur.
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) override;
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
 
   content::NotificationRegistrar registrar_;