Standardize usage of virtual/override/final specifiers.

chrome/browser/ui/libgtk2ui/app_indicator_icon.h

 // Copyright 2013 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_LIBGTK2UI_APP_INDICATOR_ICON_H_
 #define CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 15 matching lines @@
 class AppIndicatorIconMenu;
 
 // Status icon implementation which uses libappindicator.
 class AppIndicatorIcon : public views::StatusIconLinux {
  public:
   // The id uniquely identifies the new status icon from other chrome status
   // icons.
   AppIndicatorIcon(std::string id,
                    const gfx::ImageSkia& image,
                    const base::string16& tool_tip);
-  virtual ~AppIndicatorIcon();
+  ~AppIndicatorIcon() override;
 
   // Indicates whether libappindicator so could be opened.
   static bool CouldOpen();
 
   // Overridden from views::StatusIconLinux:
-  virtual void SetImage(const gfx::ImageSkia& image) override;
-  virtual void SetToolTip(const base::string16& tool_tip) override;
-  virtual void UpdatePlatformContextMenu(ui::MenuModel* menu) override;
-  virtual void RefreshPlatformContextMenu() override;
+  void SetImage(const gfx::ImageSkia& image) override;
+  void SetToolTip(const base::string16& tool_tip) override;
+  void UpdatePlatformContextMenu(ui::MenuModel* menu) override;
+  void RefreshPlatformContextMenu() override;
 
  private:
   void SetImageFromFile(const base::FilePath& icon_file_path);
   void SetMenu();
 
   // Sets a menu item at the top of the menu as a replacement for the status
   // icon click action. Clicking on this menu item should simulate a status icon
   // click by despatching a click event.
   void UpdateClickActionReplacementMenuItem();
 
@@ skipping 16 matching lines @@
   int icon_change_count_;
 
   base::WeakPtrFactory<AppIndicatorIcon> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AppIndicatorIcon);
 };
 
 }  // namespace libgtk2ui
 
 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_APP_INDICATOR_ICON_H_