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

ash/common/system/chromeos/cast/tray_cast.h

Index: ash/common/system/chromeos/cast/tray_cast.h
diff --git a/ash/system/cast/tray_cast.h b/ash/common/system/chromeos/cast/tray_cast.h
similarity index 92%
rename from ash/system/cast/tray_cast.h
rename to ash/common/system/chromeos/cast/tray_cast.h
index 3935250d492d2d5dcde47e1738aeeaaa47f71c70..ae7fda7d9d5d3cbeb121471c6f94ad66c88e8638 100644
--- a/ash/system/cast/tray_cast.h
+++ b/ash/common/system/chromeos/cast/tray_cast.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_SYSTEM_CAST_TRAY_CAST_H_
-#define ASH_SYSTEM_CAST_TRAY_CAST_H_
+#ifndef ASH_COMMON_SYSTEM_CHROMEOS_CAST_TRAY_CAST_H_
+#define ASH_COMMON_SYSTEM_CHROMEOS_CAST_TRAY_CAST_H_
 
 #include <string>
 #include <vector>
 
 #include "ash/common/cast_config_controller.h"
 #include "ash/common/shell_observer.h"
-#include "ash/system/tray/system_tray_item.h"
+#include "ash/common/system/tray/system_tray_item.h"
 #include "base/macros.h"
 
 namespace ash {
@@ -81,4 +81,4 @@ class ASH_EXPORT TrayCast : public SystemTrayItem,
 
 }  // namespace ash
 
-#endif  // ASH_SYSTEM_CAST_TRAY_CAST_H_
+#endif  // ASH_COMMON_SYSTEM_CHROMEOS_CAST_TRAY_CAST_H_