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

ash/system/audio/tray_audio.h

Index: ash/system/audio/tray_audio.h
diff --git a/ash/common/system/chromeos/audio/tray_audio.h b/ash/system/audio/tray_audio.h
similarity index 93%
rename from ash/common/system/chromeos/audio/tray_audio.h
rename to ash/system/audio/tray_audio.h
index d58764476eb9d9989e509d51f1623704187d6e2a..c82fdf316c9be9d45700d9bca684671b5de4607c 100644
--- a/ash/common/system/chromeos/audio/tray_audio.h
+++ b/ash/system/audio/tray_audio.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_COMMON_SYSTEM_CHROMEOS_AUDIO_TRAY_AUDIO_H_
-#define ASH_COMMON_SYSTEM_CHROMEOS_AUDIO_TRAY_AUDIO_H_
+#ifndef ASH_SYSTEM_AUDIO_TRAY_AUDIO_H_
+#define ASH_SYSTEM_AUDIO_TRAY_AUDIO_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "ash/ash_export.h"
-#include "ash/common/system/tray/tray_image_item.h"
+#include "ash/system/tray/tray_image_item.h"
 #include "base/macros.h"
 #include "chromeos/audio/cras_audio_handler.h"
 #include "chromeos/dbus/power_manager_client.h"
@@ -91,4 +91,4 @@ class ASH_EXPORT TrayAudio : public TrayImageItem,
 
 }  // namespace ash
 
-#endif  // ASH_COMMON_SYSTEM_CHROMEOS_AUDIO_TRAY_AUDIO_H_
+#endif  // ASH_SYSTEM_AUDIO_TRAY_AUDIO_H_