Implement restart on Idle for Kiosk Mode.

chrome/browser/chromeos/kiosk_mode/kiosk_mode_screen_locker.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_SCREEN_LOCKER_H_
+#define CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_SCREEN_LOCKER_H_
+#pragma once
+
+#include "base/time.h"
+#include "base/timer.h"
+
+namespace chromeos {
+
+class KioskModeScreenLocker {
+ public:
+  static void InitClass();
+
+ private:
+  KioskModeScreenLocker() {}
+
+  base::RepeatingTimer<KioskModeScreenLocker> slow_timer_;
+  base::RepeatingTimer<KioskModeScreenLocker> fast_timer_;
+
+  DISALLOW_COPY_AND_ASSIGN(KioskModeScreenLocker);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_SCREEN_LOCKER_H_