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

chrome/browser/ui/tab_modal_confirm_dialog_delegate.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_TAB_MODAL_CONFIRM_DIALOG_DELEGATE_H_
 #define CHROME_BROWSER_UI_TAB_MODAL_CONFIRM_DIALOG_DELEGATE_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/strings/string16.h"
@@ skipping 18 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TabModalConfirmDialogCloseDelegate);
 };
 
 // This class acts as the delegate for a simple tab-modal dialog confirming
 // whether the user wants to execute a certain action.
 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;
   }
 
   // Accepts the confirmation prompt and calls OnAccepted() if no other call
   // to Accept(), Cancel() or Close() has been made before.
   // This method is safe to call even from an OnAccepted(), OnCanceled(),
   // OnClosed() or OnLinkClicked() callback.
   void Accept();
@@ skipping 42 matching lines @@
   virtual const char* GetAcceptButtonIcon();
   virtual const char* GetCancelButtonIcon();
 
  protected:
   TabModalConfirmDialogCloseDelegate* close_delegate() {
     return close_delegate_;
   }
 
   // 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_;
 
  private:
   // It is guaranteed that exactly one of OnAccepted(), OnCanceled() or
   // OnClosed() is eventually called. These method are private to enforce this
   // guarantee. Access to them is controlled by Accept(), Cancel() and Close().
 
   // Called when the user accepts or cancels the dialog, respectively.
   virtual void OnAccepted();
@@ skipping 14 matching lines @@
   TabModalConfirmDialogCloseDelegate* close_delegate_;
 
   // True iff we are in the process of closing, to avoid running callbacks
   // multiple times.
   bool closing_;
 
   DISALLOW_COPY_AND_ASSIGN(TabModalConfirmDialogDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_TAB_MODAL_CONFIRM_DIALOG_DELEGATE_H_