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

ash/system/tray/tray_popup_item_style.h

 // Copyright 2016 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_TRAY_TRAY_POPUP_ITEM_STYLE_H_
-#define ASH_COMMON_SYSTEM_TRAY_TRAY_POPUP_ITEM_STYLE_H_
+#ifndef ASH_SYSTEM_TRAY_TRAY_POPUP_ITEM_STYLE_H_
+#define ASH_SYSTEM_TRAY_TRAY_POPUP_ITEM_STYLE_H_
 
 #include "base/macros.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace views {
 class Label;
 }  // namespace views
 
 namespace ash {
 
@@ skipping 56 matching lines @@
  private:
   FontStyle font_style_;
 
   ColorStyle color_style_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayPopupItemStyle);
 };
 
 }  // namespace ash
 
-#endif  // ASH_COMMON_SYSTEM_TRAY_TRAY_POPUP_ITEM_STYLE_H_
+#endif  // ASH_SYSTEM_TRAY_TRAY_POPUP_ITEM_STYLE_H_