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

chrome/browser/ui/ash/launcher/arc_app_shelf_id.cc

 // Copyright 2016 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.
 
 #include "chrome/browser/ui/ash/launcher/arc_app_shelf_id.h"
 
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "components/crx_file/id_util.h"
 
 namespace arc {
 
 namespace {
 
 // String representation of Intent starts with this prefix.
 constexpr char kIntent[] = "#Intent";
-// Prefix in intent that specifies Arc shelf group. S. means string type.
+// Prefix in intent that specifies ARC shelf group. S. means string type.
 constexpr char kShelfGroupIntentPrefix[] = "S.org.chromium.arc.shelf_group_id=";
-// Prefix to specify Arc shelf group.
+// Prefix to specify ARC shelf group.
 constexpr char kShelfGroupPrefix[] = "shelf_group:";
 
 }  // namespace
 
 ArcAppShelfId::ArcAppShelfId(const std::string& shelf_group_id,
                              const std::string& app_id)
     : shelf_group_id_(shelf_group_id), app_id_(app_id) {
   DCHECK(crx_file::id_util::IdIsValid(app_id));
 }
 
@@ skipping 42 matching lines @@
 }
 
 bool ArcAppShelfId::operator<(const ArcAppShelfId& other) const {
   const int compare_group = shelf_group_id_.compare(other.shelf_group_id());
   if (compare_group == 0)
     return app_id_ < other.app_id();
   return compare_group < 0;
 }
 
 }  // namespace arc