Deprecate HOSTED_NOT_ALLOWED auth error

ios/chrome/browser/sync/sync_setup_service.cc

 // Copyright 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.
 
 #include "ios/chrome/browser/sync/sync_setup_service.h"
 
 #include <stdio.h>
 
 #include "base/macros.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 120 matching lines @@
     // on about:sync.
     case GoogleServiceAuthError::CONNECTION_FAILED:
     case GoogleServiceAuthError::USER_NOT_SIGNED_UP:
     case GoogleServiceAuthError::UNEXPECTED_SERVICE_RESPONSE:
       break;
     // The following errors are unexpected on iOS.
     case GoogleServiceAuthError::CAPTCHA_REQUIRED:
     case GoogleServiceAuthError::ACCOUNT_DELETED:
     case GoogleServiceAuthError::ACCOUNT_DISABLED:
     case GoogleServiceAuthError::TWO_FACTOR:
-    case GoogleServiceAuthError::HOSTED_NOT_ALLOWED:
+    case GoogleServiceAuthError::HOSTED_NOT_ALLOWED_DEPRECATED:
     case GoogleServiceAuthError::SERVICE_ERROR:
     case GoogleServiceAuthError::WEB_LOGIN_REQUIRED:
     // Conventional value for counting the states, never used.
     case GoogleServiceAuthError::NUM_STATES:
       NOTREACHED() << "Unexpected Auth error ("
                    << sync_service_->GetAuthError().state()
                    << "): " << sync_service_->GetAuthError().error_message();
       break;
   }
   if (sync_service_->HasUnrecoverableError())
@@ skipping 39 matching lines @@
     bool sync_enabled) {
   sync_blocker_ = sync_service_->GetSetupInProgressHandle();
   if (sync_enabled) {
     sync_service_->RequestStart();
   } else {
     UMA_HISTOGRAM_ENUMERATION("Sync.StopSource", syncer::CHROME_SYNC_SETTINGS,
                               syncer::STOP_SOURCE_LIMIT);
     sync_service_->RequestStop(sync_driver::SyncService::KEEP_DATA);
   }
 }