Standardize usage of virtual/override/final specifiers.

chrome/browser/ui/views/apps/app_info_dialog/app_info_panel.h

 // Copyright 2014 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_VIEWS_APPS_APP_INFO_DIALOG_APP_INFO_PANEL_H_
 #define CHROME_BROWSER_UI_VIEWS_APPS_APP_INFO_DIALOG_APP_INFO_PANEL_H_
 
 #include "ui/views/view.h"
 
 class Profile;
 
 namespace extensions {
 class Extension;
 }
 namespace views {
 class Label;
 }
 
 // A piece of the App Info dialog that displays information for a particular
 // profile and app. Panels in the App Info dialog extend this class.
 class AppInfoPanel : public views::View {
  public:
   AppInfoPanel(Profile* profile, const extensions::Extension* app);
 
-  virtual ~AppInfoPanel();
+  ~AppInfoPanel() override;
 
  protected:
   // Closes the dialog.
   void Close();
 
   // Create a heading label with the given text.
   views::Label* CreateHeading(const base::string16& text) const;
 
   // Create a view with a vertically-stacked box layout, which can have child
   // views appended to it. |child_spacing| defaults to
@@ skipping 10 matching lines @@
   views::View* CreateKeyValueField(views::View* key, views::View* value) const;
 
   Profile* profile_;
   const extensions::Extension* app_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AppInfoPanel);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_APPS_APP_INFO_DIALOG_APP_INFO_PANEL_H_