Update {virtual,override,final} to follow C++11 style chrome/browser/ui/webui/chromeos.

chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc

 // 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.
 
 #include "chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.h"
 
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 260 matching lines @@
 }
 
 }  // namespace
 
 // The handler for Javascript messages related to the "keyboardoverlay" view.
 class KeyboardOverlayHandler
     : public WebUIMessageHandler,
       public base::SupportsWeakPtr<KeyboardOverlayHandler> {
  public:
   explicit KeyboardOverlayHandler(Profile* profile);
-  virtual ~KeyboardOverlayHandler();
+  ~KeyboardOverlayHandler() override;
 
   // WebUIMessageHandler implementation.
-  virtual void RegisterMessages() override;
+  void RegisterMessages() override;
 
  private:
   // Called when the page requires the input method ID corresponding to the
   // current input method or keyboard layout during initialization.
   void GetInputMethodId(const base::ListValue* args);
 
   // Called when the page requres the information of modifier key remapping
   // during the initialization.
   void GetLabelMap(const base::ListValue* args);
 
@@ skipping 79 matching lines @@
 
 KeyboardOverlayUI::KeyboardOverlayUI(content::WebUI* web_ui)
     : WebDialogUI(web_ui) {
   Profile* profile = Profile::FromWebUI(web_ui);
   KeyboardOverlayHandler* handler = new KeyboardOverlayHandler(profile);
   web_ui->AddMessageHandler(handler);
 
   // Set up the chrome://keyboardoverlay/ source.
   content::WebUIDataSource::Add(profile, CreateKeyboardOverlayUIHTMLSource());
 }