chromeos: Move files in //ash/common to //ash, part 2

ash/shelf/shelf_model_observer.h

Index: ash/shelf/shelf_model_observer.h
diff --git a/ash/common/shelf/shelf_model_observer.h b/ash/shelf/shelf_model_observer.h
similarity index 87%
rename from ash/common/shelf/shelf_model_observer.h
rename to ash/shelf/shelf_model_observer.h
index 794300da4900b36a740797c60d518d1021c3680a..70e7156cabe665515140c101c043859037f792d5 100644
--- a/ash/common/shelf/shelf_model_observer.h
+++ b/ash/shelf/shelf_model_observer.h
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_COMMON_SHELF_SHELF_MODEL_OBSERVER_H_
-#define ASH_COMMON_SHELF_SHELF_MODEL_OBSERVER_H_
+#ifndef ASH_SHELF_SHELF_MODEL_OBSERVER_H_
+#define ASH_SHELF_SHELF_MODEL_OBSERVER_H_
 
 #include "ash/ash_export.h"
-#include "ash/common/shelf/shelf_item_types.h"
+#include "ash/shelf/shelf_item_types.h"
 
 namespace ash {
 
@@ -43,4 +43,4 @@ class ASH_EXPORT ShelfModelObserver {
 
 }  // namespace ash
 
-#endif  // ASH_COMMON_SHELF_SHELF_MODEL_OBSERVER_H_
+#endif  // ASH_SHELF_SHELF_MODEL_OBSERVER_H_