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

ash/system/rotation/tray_rotation_lock.h

Index: ash/system/rotation/tray_rotation_lock.h
diff --git a/ash/system/chromeos/rotation/tray_rotation_lock.h b/ash/system/rotation/tray_rotation_lock.h
similarity index 88%
rename from ash/system/chromeos/rotation/tray_rotation_lock.h
rename to ash/system/rotation/tray_rotation_lock.h
index 109376c98058f0e393c28c76eebaf31d3b550693..6030b3cd963270fdd75878456413637d2b7b8a3a 100644
--- a/ash/system/chromeos/rotation/tray_rotation_lock.h
+++ b/ash/system/rotation/tray_rotation_lock.h
@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_SYSTEM_CHROMEOS_ROTATION_TRAY_ROTATION_LOCK_H_
-#define ASH_SYSTEM_CHROMEOS_ROTATION_TRAY_ROTATION_LOCK_H_
+#ifndef ASH_SYSTEM_ROTATION_TRAY_ROTATION_LOCK_H_
+#define ASH_SYSTEM_ROTATION_TRAY_ROTATION_LOCK_H_
 
 #include "ash/common/shell_observer.h"
-#include "ash/common/system/tray/tray_image_item.h"
 #include "ash/display/screen_orientation_controller_chromeos.h"
+#include "ash/system/tray/tray_image_item.h"
 #include "base/macros.h"
 
 namespace ash {
@@ -61,4 +61,4 @@ class ASH_EXPORT TrayRotationLock
 
 }  // namespace ash
 
-#endif  // ASH_SYSTEM_CHROMEOS_ROTATION_TRAY_ROTATION_LOCK_H_
+#endif  // ASH_SYSTEM_ROTATION_TRAY_ROTATION_LOCK_H_