mash: Move most files in //ash/system/tray to //ash/common/system/tray

ash/common/system/tray/special_popup_row.h

 // Copyright (c) 2013 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_SYSTEM_TRAY_SPECIAL_POPUP_ROW_H_
-#define ASH_SYSTEM_TRAY_SPECIAL_POPUP_ROW_H_
+#ifndef ASH_COMMON_SYSTEM_TRAY_SPECIAL_POPUP_ROW_H_
+#define ASH_COMMON_SYSTEM_TRAY_SPECIAL_POPUP_ROW_H_
 
 #include "ash/ash_export.h"
 #include "base/macros.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/views/view.h"
 
 namespace views {
 class Label;
 }
 
@@ skipping 25 matching lines @@
   void Layout() override;
 
   views::View* content_;
   views::View* button_container_;
 
   DISALLOW_COPY_AND_ASSIGN(SpecialPopupRow);
 };
 
 }  // namespace ash
 
-#endif  // ASH_SYSTEM_TRAY_SPECIAL_POPUP_ROW_H_
+#endif  // ASH_COMMON_SYSTEM_TRAY_SPECIAL_POPUP_ROW_H_