arc: Consolidate IsArcAllowedForUser logic

chrome/browser/chromeos/login/screens/user_selection_screen.cc

 // Copyright 2014 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/login/screens/user_selection_screen.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 133 matching lines @@
 
 // Returns true if dircrypto migration check should be performed.
 bool ShouldCheckNeedDircryptoMigration() {
   return !base::CommandLine::ForCurrentProcess()->HasSwitch(
              switches::kDisableEncryptionMigration) &&
          arc::IsArcAvailable();
 }
 
 // Returns true if the user can run ARC based on the user type.
 bool IsUserAllowedForARC(const AccountId& account_id) {
-  if (!user_manager::UserManager::IsInitialized())
-    return false;
-
-  const user_manager::User* user =
-      user_manager::UserManager::Get()->FindUser(account_id);
-  if (!user)
-    return false;
-
-  return user->HasGaiaAccount() || user->IsActiveDirectoryUser();
+  return user_manager::UserManager::IsInitialized() &&
+         arc::IsArcAllowedForUser(
+             user_manager::UserManager::Get()->FindUser(account_id));
 }
 
 }  // namespace
 
 // Helper class to call cryptohome to check whether a user needs dircrypto
 // migration. The check results are cached to limit calls to cryptohome.
 class UserSelectionScreen::DircryptoMigrationChecker {
  public:
   explicit DircryptoMigrationChecker(UserSelectionScreen* owner)
       : owner_(owner), weak_ptr_factory_(this) {}
@@ skipping 539 matching lines @@
   // The user profile should exist if and only if this is the lock screen.
   DCHECK_EQ(!!profile, GetScreenType() == LOCK_SCREEN);
 
   if (!profile)
     profile = profile_helper->GetSigninProfile();
 
   return EasyUnlockService::Get(profile);
 }
 
 }  // namespace chromeos