mash: Move //ash/session to //ash/common/session

ash/common/session/session_state_delegate.h

 // Copyright 2015 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 ASH_SESSION_SESSION_STATE_DELEGATE_H_
-#define ASH_SESSION_SESSION_STATE_DELEGATE_H_
-
-#include <string>
+#ifndef ASH_COMMON_SESSION_SESSION_STATE_DELEGATE_H_
+#define ASH_COMMON_SESSION_SESSION_STATE_DELEGATE_H_
 
 #include "ash/ash_export.h"
-#include "ash/session/session_types.h"
+#include "ash/common/session/session_types.h"
 
 class AccountId;
 
 namespace gfx {
 class ImageSkia;
 }
 
 namespace user_manager {
 class UserInfo;
 }
@@ skipping 102 matching lines @@
 
   // Adds or removes sessions state observer.
   virtual void AddSessionStateObserver(SessionStateObserver* observer) = 0;
   virtual void RemoveSessionStateObserver(SessionStateObserver* observer) = 0;
 
   bool IsInSecondaryLoginScreen() const;
 };
 
 }  // namespace ash
 
-#endif  // ASH_SESSION_SESSION_STATE_DELEGATE_H_
+#endif  // ASH_COMMON_SESSION_SESSION_STATE_DELEGATE_H_