mash: Move //ash/system/date to //ash/common

ash/common/system/chromeos/shutdown_policy_observer.h

Index: ash/common/system/chromeos/shutdown_policy_observer.h
diff --git a/ash/system/chromeos/shutdown_policy_observer.h b/ash/common/system/chromeos/shutdown_policy_observer.h
similarity index 70%
rename from ash/system/chromeos/shutdown_policy_observer.h
rename to ash/common/system/chromeos/shutdown_policy_observer.h
index 92a8e8121d6440afd0b31fe7f9e8b2c2d5f5cbc9..cb15296a7881b39538dac4904ec82620e3104524 100644
--- a/ash/system/chromeos/shutdown_policy_observer.h
+++ b/ash/common/system/chromeos/shutdown_policy_observer.h
@@ -2,8 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_SYSTEM_CHROMEOS_SHUTDOWN_POLICY_OBSERVER_H_
-#define ASH_SYSTEM_CHROMEOS_SHUTDOWN_POLICY_OBSERVER_H_
+#ifndef ASH_COMMON_SYSTEM_CHROMEOS_SHUTDOWN_POLICY_OBSERVER_H_
+#define ASH_COMMON_SYSTEM_CHROMEOS_SHUTDOWN_POLICY_OBSERVER_H_
+
+#include "ash/ash_export.h"
 
 namespace ash {
 
@@ -19,4 +21,4 @@ class ASH_EXPORT ShutdownPolicyObserver {
 
 }  // namespace ash
 
-#endif  // ASH_SYSTEM_CHROMEOS_SHUTDOWN_POLICY_OBSERVER_H_
+#endif  // ASH_COMMON_SYSTEM_CHROMEOS_SHUTDOWN_POLICY_OBSERVER_H_