Revert of [Sync] Make directory types registration explicit in ModelTypeRegistry

components/browser_sync/profile_sync_service.cc

 // Copyright (c) 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 "components/browser_sync/profile_sync_service.h"
 
 #include <stddef.h>
 
 #include <cstddef>
 #include <map>
@@ skipping 1428 matching lines @@
     ClearAndRestartSyncForPassphraseEncryption();
     return;
   }
 
   StartSyncingWithServer();
 }
 
 void ProfileSyncService::OnConfigureStart() {
   DCHECK(thread_checker_.CalledOnValidThread());
   sync_configure_start_time_ = base::Time::Now();
-  engine_->StartConfiguration();
   NotifyObservers();
 }
 
 ProfileSyncService::SyncStatusSummary
 ProfileSyncService::QuerySyncStatusSummary() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (HasUnrecoverableError()) {
     return UNRECOVERABLE_ERROR;
   } else if (!engine_) {
     return NOT_ENABLED;
@@ skipping 1174 matching lines @@
 
   DCHECK(startup_controller_->IsSetupInProgress());
   startup_controller_->SetSetupInProgress(false);
 
   if (IsEngineInitialized())
     ReconfigureDatatypeManager();
   NotifyObservers();
 }
 
 }  // namespace browser_sync