[cros] update screen re-factoring pt.1

chrome/browser/chromeos/login/update_screen_views_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/update_screen_views_actor.h"
+
+namespace chromeos {
+
+UpdateScreenViewsActor::UpdateScreenViewsActor(WizardScreenDelegate* delegate,
+                                               int width,
+                                               int height)
+    : DefaultViewScreen<chromeos::UpdateView>(delegate, width, height) {
+}
+
+void UpdateScreenViewsActor::Show() {
+  DefaultViewScreen<chromeos::UpdateView>::Show();
+}
+
+void UpdateScreenViewsActor::Hide() {
+  DefaultViewScreen<chromeos::UpdateView>::Hide();
+}
+
+void UpdateScreenViewsActor::ShowManualRebootInfo() {
+  view()->ShowManualRebootInfo();
+}
+
+void UpdateScreenViewsActor::SetProgress(int progress) {
+  view()->SetProgress(progress);
+}
+
+void UpdateScreenViewsActor::ShowCurtain(bool enable) {
+  view()->ShowCurtain(enable);
+}
+
+}  // namespace chromeos