chromeos: Implement the new D-Bus client for SessionManagerClient.

chrome/browser/chromeos/login/session_manager_observer.h

Index: chrome/browser/chromeos/login/session_manager_observer.h
diff --git a/chrome/browser/chromeos/login/session_manager_observer.h b/chrome/browser/chromeos/login/session_manager_observer.h
new file mode 100644
index 0000000000000000000000000000000000000000..83bc025a432f05660b56a3bc8f617c88c3e2392d
--- /dev/null
+++ b/chrome/browser/chromeos/login/session_manager_observer.h
@@ -0,0 +1,33 @@
+// Copyright (c) 2011 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_MANAGER_OBSERVER_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_SESSION_MANAGER_OBSERVER_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "chrome/browser/chromeos/dbus/session_manager_client.h"
+
+namespace chromeos {
+
+// SessionManagerObserver is used to take actions per signals sent from the
+// session manager.
+class SessionManagerObserver : public SessionManagerClient::Observer {
+ public:
+  SessionManagerObserver();
+  virtual ~SessionManagerObserver();
+
+ private:
+  // SessionManagerClient::Observer override.
+  virtual void OwnerKeySet(bool success) OVERRIDE;
+  // SessionManagerClient::Observer override.
+  virtual void PropertyChangeComplete(bool success) OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(SessionManagerObserver);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SESSION_MANAGER_OBSERVER_H_