s/\bArc\b/ARC/g for ARC related code.

ash/public/cpp/shelf_types.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_PUBLIC_CPP_SHELF_TYPES_H_
 #define ASH_PUBLIC_CPP_SHELF_TYPES_H_
 
 namespace ash {
 
 enum ShelfAlignment {
@@ skipping 86 matching lines @@
   TYPE_APP_SHORTCUT,
 
   // Toggles visiblity of the app list.
   TYPE_APP_LIST,
 
   // The browser shortcut button.
   TYPE_BROWSER_SHORTCUT,
 
   // Represents an app: Extension "V1" (legacy packaged and hosted) apps,
   //                    Extension "V2" (platform) apps,
-  //                    Arc (App Runtime for Chrome - Android Play Store) apps.
+  //                    ARC (App Runtime for Chrome - Android Play Store) apps.
   TYPE_APP,
 
   // Represents a dialog.
   TYPE_DIALOG,
 
   // Default value.
   TYPE_UNDEFINED,
 };
 
 // Represents the status of applications in the shelf.
 enum ShelfItemStatus {
   // A closed shelf item, i.e. has no live instance.
   STATUS_CLOSED,
   // A shelf item that has live instance.
   STATUS_RUNNING,
   // An active shelf item that has focus.
   STATUS_ACTIVE,
   // A shelf item that needs user's attention.
   STATUS_ATTENTION,
 };
 
 }  // namespace ash
 
 #endif  // ASH_PUBLIC_CPP_SHELF_TYPES_H_