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

ash/system/settings/tray_settings.h

 // Copyright (c) 2012 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_COMMON_SYSTEM_CHROMEOS_SETTINGS_TRAY_SETTINGS_H_
-#define ASH_COMMON_SYSTEM_CHROMEOS_SETTINGS_TRAY_SETTINGS_H_
+#ifndef ASH_SYSTEM_SETTINGS_TRAY_SETTINGS_H_
+#define ASH_SYSTEM_SETTINGS_TRAY_SETTINGS_H_
 
-#include "ash/common/system/tray/system_tray_item.h"
+#include "ash/system/tray/system_tray_item.h"
 #include "base/macros.h"
 
 namespace ash {
 namespace tray {
 class SettingsDefaultView;
 }
 
 // TODO(tdanderson): Remove this class once material design is enabled by
 // default. See crbug.com/614453.
 class TraySettings : public SystemTrayItem {
@@ skipping 11 matching lines @@
   void DestroyDetailedView() override;
   void UpdateAfterLoginStatusChange(LoginStatus status) override;
 
   tray::SettingsDefaultView* default_view_;
 
   DISALLOW_COPY_AND_ASSIGN(TraySettings);
 };
 
 }  // namespace ash
 
-#endif  // ASH_COMMON_SYSTEM_CHROMEOS_SETTINGS_TRAY_SETTINGS_H_
+#endif  // ASH_SYSTEM_SETTINGS_TRAY_SETTINGS_H_