Screensaver at login screen.

chrome/browser/chromeos/kiosk_mode/kiosk_mode_screensaver.h

+// 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_SCREENSAVER_H_
+#define CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_SCREENSAVER_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "chrome/browser/chromeos/dbus/power_manager_client.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+
+namespace chromeos {
+
+class KioskModeScreensaver : public PowerManagerClient::Observer,
+                             public content::NotificationObserver {
+ public:
+  KioskModeScreensaver();
+  virtual ~KioskModeScreensaver();
+
+  // NotificationObserver overrides:
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  // PowerManagerClient::Observer overrides:
+  virtual void IdleNotify(int64 threshold) OVERRIDE;
+  virtual void ActiveNotify() OVERRIDE;
+
+ private:
+  friend class KioskModeScreensaverTest;
+  content::NotificationRegistrar registrar_;
+
+  DISALLOW_COPY_AND_ASSIGN(KioskModeScreensaver);
+};
+
+void InitializeKioskModeScreensaver();
+void ShutdownKioskModeScreensaver();
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_SCREENSAVER_H_