ash: Some code-cleanup in the system-tray code.

ash/system/tray/system_tray_widget_delegate.h

Index: ash/system/tray/system_tray_widget_delegate.h
diff --git a/ash/status_area/status_area_view.h b/ash/system/tray/system_tray_widget_delegate.h
similarity index 88%
rename from ash/status_area/status_area_view.h
rename to ash/system/tray/system_tray_widget_delegate.h
index 9046573cadcb5d8eab8497b5d418f81eb98e045e..1834afd6478de6f4b855a2f73249e56c6d839fb1 100644
--- a/ash/status_area/status_area_view.h
+++ b/ash/system/tray/system_tray_widget_delegate.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_STATUS_AREA_STATUS_AREA_VIEW_H_
-#define ASH_STATUS_AREA_STATUS_AREA_VIEW_H_
+#ifndef ASH_SYSTEM_TRAY_SYSTEM_TRAY_WIDGET_DELEGATE_H_
+#define ASH_SYSTEM_TRAY_SYSTEM_TRAY_WIDGET_DELEGATE_H_
 #pragma once
 
 #include "ash/ash_export.h"
@@ -46,4 +46,4 @@ class ASH_EXPORT StatusAreaView : public views::WidgetDelegate,
 }  // namespace internal
 }  // namespace ash
 
-#endif  // ASH_STATUS_AREA_STATUS_AREA_VIEW_H_
+#endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_WIDGET_DELEGATE_H_