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

ash/system/audio/volume_view.h

Index: ash/system/audio/volume_view.h
diff --git a/ash/common/system/chromeos/audio/volume_view.h b/ash/system/audio/volume_view.h
similarity index 91%
rename from ash/common/system/chromeos/audio/volume_view.h
rename to ash/system/audio/volume_view.h
index 47835e504eed408bf32369e0e9d23cca4ddc654a..60a6013d75990b672c7206cd1affeed3b23a7a53 100644
--- a/ash/common/system/chromeos/audio/volume_view.h
+++ b/ash/system/audio/volume_view.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_COMMON_SYSTEM_CHROMEOS_AUDIO_VOLUME_VIEW_H_
-#define ASH_COMMON_SYSTEM_CHROMEOS_AUDIO_VOLUME_VIEW_H_
+#ifndef ASH_SYSTEM_AUDIO_VOLUME_VIEW_H_
+#define ASH_SYSTEM_AUDIO_VOLUME_VIEW_H_
 
 #include "base/macros.h"
 #include "ui/views/controls/button/button.h"
@@ -73,4 +73,4 @@ class VolumeView : public views::View,
 }  // namespace tray
 }  // namespace ash
 
-#endif  // ASH_COMMON_SYSTEM_CHROMEOS_AUDIO_VOLUME_VIEW_H_
+#endif  // ASH_SYSTEM_AUDIO_VOLUME_VIEW_H_