mash: Move chromeos audio system tray files to //ash/common

ash/common/system/chromeos/audio/tray_audio_delegate_chromeos.h

Index: ash/common/system/chromeos/audio/tray_audio_delegate_chromeos.h
diff --git a/ash/system/chromeos/audio/tray_audio_delegate_chromeos.h b/ash/common/system/chromeos/audio/tray_audio_delegate_chromeos.h
similarity index 82%
rename from ash/system/chromeos/audio/tray_audio_delegate_chromeos.h
rename to ash/common/system/chromeos/audio/tray_audio_delegate_chromeos.h
index 6d4b2b1b1d3697da6a8f3172bd635ad56d43c7bd..14f5c7d6a3ce18c310fdd0068257b585602522c7 100644
--- a/ash/system/chromeos/audio/tray_audio_delegate_chromeos.h
+++ b/ash/common/system/chromeos/audio/tray_audio_delegate_chromeos.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_SYSTEM_AUDIO_TRAY_AUDIO_DELEGATE_CHROMEOS_H_
-#define ASH_SYSTEM_AUDIO_TRAY_AUDIO_DELEGATE_CHROMEOS_H_
+#ifndef ASH_COMMON_SYSTEM_CHROMEOS_AUDIO_TRAY_AUDIO_DELEGATE_CHROMEOS_H_
+#define ASH_COMMON_SYSTEM_CHROMEOS_AUDIO_TRAY_AUDIO_DELEGATE_CHROMEOS_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/system/audio/tray_audio_delegate.h"
@@ -32,4 +32,4 @@ class ASH_EXPORT TrayAudioDelegateChromeOs : public TrayAudioDelegate {
 }  // namespace system
 }  // namespace ash
 
-#endif  // ASH_SYSTEM_AUDIO_TRAY_AUDIO_DELEGATE_CHROMEOS_H_
+#endif  // ASH_COMMON_SYSTEM_CHROMEOS_AUDIO_TRAY_AUDIO_DELEGATE_CHROMEOS_H_