Implement the auto-logout on idle feature for Kiosk mode.

chrome/browser/chromeos/kiosk_mode/kiosk_mode_idle_logout.h

Index: chrome/browser/chromeos/kiosk_mode/kiosk_mode_idle_logout.h
diff --git a/chrome/browser/chromeos/kiosk_mode/kiosk_mode_idle_logout.h b/chrome/browser/chromeos/kiosk_mode/kiosk_mode_idle_logout.h
new file mode 100644
index 0000000000000000000000000000000000000000..2a596139fce54fe9cc52cf8db1541314eaff0fc0
--- /dev/null
+++ b/chrome/browser/chromeos/kiosk_mode/kiosk_mode_idle_logout.h
@@ -0,0 +1,50 @@
+// 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_IDLE_LOGOUT_H_
+#define CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_IDLE_LOGOUT_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 browser {
+
+// Shows or closes the logout dialog for Kiosk Mode.
+void ShowIdleLogoutDialog();
+void CloseIdleLogoutDialog();
+
+}  // namespace browser
+
+namespace chromeos {
+
+class KioskModeIdleLogout : public PowerManagerClient::Observer,
+                            public content::NotificationObserver {
+ public:
+  KioskModeIdleLogout();
+
+  // Really initialize idle logout when KioskModeHelper is initialized.
+  void Setup();
+
+  // NotificationObserver overrides:
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+  virtual void IdleNotify(int64 threshold) OVERRIDE;
+  virtual void ActiveNotify() OVERRIDE;
+
+ private:
+  friend class KioskModeIdleLogoutTest;
+  content::NotificationRegistrar registrar_;
+
+  DISALLOW_COPY_AND_ASSIGN(KioskModeIdleLogout);
+};
+
+void InitializeKioskModeIdleLogout();
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_IDLE_LOGOUT_H_