Add LogoutConfirmationController to show LogoutConfirmationDialogs

ash/system/session/session_length_limit_observer.h

Index: ash/system/session/session_length_limit_observer.h
diff --git a/ash/system/session_length_limit/session_length_limit_observer.h b/ash/system/session/session_length_limit_observer.h
similarity index 72%
rename from ash/system/session_length_limit/session_length_limit_observer.h
rename to ash/system/session/session_length_limit_observer.h
index 3fcba64d7e1e2934dde2db5d24cbc86e0a86837b..bbda656cc3cf9a2e503aee819b7c63062893a7f1 100644
--- a/ash/system/session_length_limit/session_length_limit_observer.h
+++ b/ash/system/session/session_length_limit_observer.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_SYSTEM_SESSION_LENGTH_LIMIT_SESSION_LENGTH_LIMIT_OBSERVER_H_
-#define ASH_SYSTEM_SESSION_LENGTH_LIMIT_SESSION_LENGTH_LIMIT_OBSERVER_H_
+#ifndef ASH_SYSTEM_SESSION_SESSION_LENGTH_LIMIT_OBSERVER_H_
+#define ASH_SYSTEM_SESSION_SESSION_LENGTH_LIMIT_OBSERVER_H_
 
 #include "ash/ash_export.h"
 
@@ -23,4 +23,4 @@ class ASH_EXPORT SessionLengthLimitObserver {
 
 }  // namespace ash
 
-#endif  // ASH_SYSTEM_SESSION_LENGTH_LIMIT_SESSION_LENGTH_LIMIT_OBSERVER_H_
+#endif  // ASH_SYSTEM_SESSION_SESSION_LENGTH_LIMIT_OBSERVER_H_