chromeos: Move files in //ash/common to //ash, part 1

ash/system/date/tray_date.h

Index: ash/system/date/tray_date.h
diff --git a/ash/common/system/date/tray_date.h b/ash/system/date/tray_date.h
similarity index 89%
rename from ash/common/system/date/tray_date.h
rename to ash/system/date/tray_date.h
index bf25e617d664215d13204e01b3d032189d827a3d..2ef30fb884e1d36774d6892c0e9e48a98804408b 100644
--- a/ash/common/system/date/tray_date.h
+++ b/ash/system/date/tray_date.h
@@ -2,15 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_COMMON_SYSTEM_DATE_TRAY_DATE_H_
-#define ASH_COMMON_SYSTEM_DATE_TRAY_DATE_H_
+#ifndef ASH_SYSTEM_DATE_TRAY_DATE_H_
+#define ASH_SYSTEM_DATE_TRAY_DATE_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
 #include "ash/common/login_status.h"
-#include "ash/common/system/date/clock_observer.h"
-#include "ash/common/system/tray/system_tray_item.h"
+#include "ash/system/date/clock_observer.h"
+#include "ash/system/tray/system_tray_item.h"
 #include "base/macros.h"
 
 namespace ash {
@@ -73,4 +73,4 @@ class ASH_EXPORT TrayDate : public SystemTrayItem, public ClockObserver {
 
 }  // namespace ash
 
-#endif  // ASH_COMMON_SYSTEM_DATE_TRAY_DATE_H_
+#endif  // ASH_SYSTEM_DATE_TRAY_DATE_H_