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

chrome/browser/chromeos/ui/kiosk_external_update_notification.cc

 // 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.
 
 #include "chrome/browser/chromeos/ui/kiosk_external_update_notification.h"
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ui/aura/window.h"
 #include "ui/base/resource/resource_bundle.h"
@@ skipping 20 matching lines @@
 
 class KioskExternalUpdateNotificationView : public views::WidgetDelegateView {
  public:
   explicit KioskExternalUpdateNotificationView(
       KioskExternalUpdateNotification* owner)
       : owner_(owner), widget_closed_(false) {
     AddLabel();
     SetLayoutManager(new views::FillLayout);
   }
 
-  virtual ~KioskExternalUpdateNotificationView() {
+  ~KioskExternalUpdateNotificationView() override {
     widget_closed_ = true;
     InformOwnerForDismiss();
   }
 
   // Closes the widget immediately from |owner_|.
   void CloseByOwner() {
     owner_ = NULL;
     if (!widget_closed_) {
       widget_closed_ = true;
       GetWidget()->Close();
     }
   }
 
   void SetMessage(const base::string16& message) { label_->SetText(message); }
 
   // views::WidgetDelegateView overrides:
-  virtual void OnPaint(gfx::Canvas* canvas) override {
+  void OnPaint(gfx::Canvas* canvas) override {
     SkPaint paint;
     paint.setStyle(SkPaint::kFill_Style);
     paint.setColor(kWindowBackgroundColor);
     canvas->DrawRoundRect(GetLocalBounds(), kWindowCornerRadius, paint);
     views::WidgetDelegateView::OnPaint(canvas);
   }
 
-  virtual gfx::Size GetPreferredSize() const override {
+  gfx::Size GetPreferredSize() const override {
     return gfx::Size(kPreferredWidth, kPreferredHeight);
   }
 
  private:
   void AddLabel() {
     label_ = new views::Label;
     label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
     label_->SetFontList(rb.GetFontList(ui::ResourceBundle::BoldFont));
     label_->SetEnabledColor(kTextColor);
@@ skipping 71 matching lines @@
 
 void KioskExternalUpdateNotification::Dismiss() {
   if (view_) {
     KioskExternalUpdateNotificationView* view = view_;
     view_ = NULL;
     view->CloseByOwner();
   }
 }
 
 }  // namespace chromeos