UserPolicyManagerFactoryChromeOS: Elaborate comment

chrome/browser/chromeos/policy/user_policy_manager_factory_chromeos.cc

 // Copyright (c) 2013 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/policy/user_policy_manager_factory_chromeos.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 160 matching lines @@
     return {};
   }
 
   policy::BrowserPolicyConnectorChromeOS* connector =
       g_browser_process->platform_part()->browser_policy_connector_chromeos();
   bool is_active_directory = false;
   switch (account_id.GetAccountType()) {
     case AccountType::UNKNOWN:
     case AccountType::GOOGLE:
       // TODO(tnagel): Return nullptr for unknown accounts once AccountId
-      // migration is finished.
+      // migration is finished.  (KioskAppManager still needs to be migrated.)
       if (!user->HasGaiaAccount()) {
         return {};
       }
       is_active_directory = false;
       break;
     case AccountType::ACTIVE_DIRECTORY:
       // Active Directory users only exist on devices whose install attributes
       // are locked into Active Directory mode.
       CHECK(connector->GetInstallAttributes()->IsActiveDirectoryManaged());
       is_active_directory = true;
@@ skipping 129 matching lines @@
 
 bool UserPolicyManagerFactoryChromeOS::HasTestingFactory(
     content::BrowserContext* context) {
   return false;
 }
 
 void UserPolicyManagerFactoryChromeOS::CreateServiceNow(
     content::BrowserContext* context) {}
 
 }  // namespace policy