[cros] Define session_manager component with SessionManager base class

chrome/browser/chromeos/login/session/chrome_session_manager.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_CHROME_SESSION_MANAGER_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_SESSION_CHROME_SESSION_MANAGER_H_
+
+#include "base/basictypes.h"
+#include "components/session_manager/core/session_manager.h"
+
+namespace base {
+class CommandLine;
+}
+
+class Profile;
+
+namespace chromeos {
+
+class ChromeSessionManager : public session_manager::SessionManager {
+ public:
+  static scoped_ptr<session_manager::SessionManager> CreateSessionManager(
+      const base::CommandLine& parsed_command_line,
+      Profile* profile,
+      bool is_running_test);
+
+ private:
+  explicit ChromeSessionManager(
+      session_manager::SessionManagerDelegate* delegate);
+  virtual ~ChromeSessionManager();
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeSessionManager);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SESSION_CHROME_SESSION_MANAGER_H_