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

chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service.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/chromeos/app_mode/arc/arc_kiosk_app_service.h>
 
 #include "base/time/time.h"
 #include "chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_utils.h"
 #include "chrome/browser/ui/ash/multi_user/multi_user_util.h"
 #include "chrome/common/pref_names.h"
 #include "components/prefs/pref_service.h"
 #include "ui/message_center/message_center.h"
 #include "ui/message_center/notification_blocker.h"
 
 namespace chromeos {
 
 // Timeout maintenance session after 30 minutes.
 constexpr base::TimeDelta kArcKioskMaintenanceSessionTimeout =
     base::TimeDelta::FromMinutes(30);
 
-// Blocks all notifications for ARC++ Kiosk
+// Blocks all notifications for ARC Kiosk
 class ArcKioskNotificationBlocker : public message_center::NotificationBlocker {
  public:
   ArcKioskNotificationBlocker()
       : message_center::NotificationBlocker(
             message_center::MessageCenter::Get()) {
     NotifyBlockingStateChanged();
   }
 
   ~ArcKioskNotificationBlocker() override {}
 
@@ skipping 145 matching lines @@
       ArcAppListPrefs::Get(profile_)->GetAppsForPackage(
           app->app_info().package_name());
   if (app_ids.empty())
     return std::string();
   // TODO(poromov@): Choose appropriate app id to launch. See
   // http://crbug.com/665904
   return std::string(*app_ids.begin());
 }
 
 }  // namespace chromeos