[cros] Define session_manager component with SessionManager base class

chrome/browser/chromeos/login/session/kiosk_auto_launcher_session_manager_delegate.h

+// Copyright 2014 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_LOGIN_SESSION_KIOSK_AUTO_LAUNCHER_SESSION_MANAGER_DELEGATE_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_SESSION_KIOSK_AUTO_LAUNCHER_SESSION_MANAGER_DELEGATE_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "components/session_manager/core/session_manager.h"
+
+namespace chromeos {
+
+class KioskAutoLauncherSessionManagerDelegate
+    : public session_manager::SessionManagerDelegate {
+ public:
+  KioskAutoLauncherSessionManagerDelegate();
+  virtual ~KioskAutoLauncherSessionManagerDelegate();
+
+ private:
+  // session_manager::SessionManagerDelegate implementation:
+  virtual void Start() OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(KioskAutoLauncherSessionManagerDelegate);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SESSION_KIOSK_AUTO_LAUNCHER_SESSION_MANAGER_DELEGATE_H_