CleanUp: Introduce UserInfo. Move session_state stuff to ash/session.

ash/session/session_state_observer.h

Index: ash/session/session_state_observer.h
diff --git a/ash/session_state_observer.h b/ash/session/session_state_observer.h
similarity index 85%
rename from ash/session_state_observer.h
rename to ash/session/session_state_observer.h
index 59d6f672090339b9b843dfca94ea63c0c0ffd651..36fad837d611f8b2040a40d13fa76caa886524c0 100644
--- a/ash/session_state_observer.h
+++ b/ash/session/session_state_observer.h
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_SESSION_STATE_OBSERVER_H_
-#define ASH_SESSION_STATE_OBSERVER_H_
+#ifndef ASH_SESSION_SESSION_STATE_OBSERVER_H_
+#define ASH_SESSION_SESSION_STATE_OBSERVER_H_
 
 #include <string>
 
 #include "ash/ash_export.h"
-#include "ash/session_state_delegate.h"
+#include "ash/session/session_state_delegate.h"
 #include "base/basictypes.h"
 
 namespace ash {
@@ -43,4 +43,4 @@ class ASH_EXPORT ScopedSessionStateObserver {
 
 }  // namespace ash
 
-#endif  // ASH_SESSION_STATE_OBSERVER_H_
+#endif  // ASH_SESSION_SESSION_STATE_OBSERVER_H_