[cros] check for updates in WebUI OOBE can be cancelled in dev builds.

chrome/browser/chromeos/login/views_update_screen_actor.cc

 // Copyright (c) 2011 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/login/views_update_screen_actor.h"
 
 namespace {
 
 // Considering 10px shadow from each side.
 const int kUpdateScreenWidth = 580;
 const int kUpdateScreenHeight = 305;
 
 }  // namespace
 
 namespace chromeos {
 
 ViewsUpdateScreenActor::ViewsUpdateScreenActor(ViewScreenDelegate* delegate)
     : DefaultViewScreen<chromeos::UpdateView>(delegate,
                                               kUpdateScreenWidth,
                                               kUpdateScreenHeight) {
 }
 
+void ViewsUpdateScreenActor::SetDelegate(UpdateScreenActor::Delegate* screen) {
+}
+
 void ViewsUpdateScreenActor::PrepareToShow() {
   DefaultViewScreen<chromeos::UpdateView>::PrepareToShow();
 }
 
 void ViewsUpdateScreenActor::Show() {
   DefaultViewScreen<chromeos::UpdateView>::Show();
 }
 
 void ViewsUpdateScreenActor::Hide() {
   DefaultViewScreen<chromeos::UpdateView>::Hide();
 }
 
 void ViewsUpdateScreenActor::ShowManualRebootInfo() {
   view()->ShowManualRebootInfo();
 }
 
 void ViewsUpdateScreenActor::SetProgress(int progress) {
   view()->SetProgress(progress);
 }
 
 void ViewsUpdateScreenActor::ShowCurtain(bool enable) {
   view()->ShowCurtain(enable);
 }
 
 void ViewsUpdateScreenActor::ShowPreparingUpdatesInfo(bool visible) {
   view()->ShowPreparingUpdatesInfo(visible);
 }
 
 }  // namespace chromeos