Replace deprecated base::NonThreadSafe in components/autofill in favor of SequenceChecker.

components/autofill/core/browser/webdata/autocomplete_syncable_service.h

 // 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.
 #ifndef COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOCOMPLETE_SYNCABLE_SERVICE_H_
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOCOMPLETE_SYNCABLE_SERVICE_H_
 
 #include <map>
 #include <memory>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/scoped_observer.h"
+#include "base/sequence_checker.h"
 #include "base/supports_user_data.h"
-#include "base/threading/non_thread_safe.h"
 #include "components/autofill/core/browser/webdata/autofill_change.h"
 #include "components/autofill/core/browser/webdata/autofill_entry.h"
 #include "components/autofill/core/browser/webdata/autofill_webdata_backend.h"
 #include "components/autofill/core/browser/webdata/autofill_webdata_service.h"
 #include "components/autofill/core/browser/webdata/autofill_webdata_service_observer.h"
 #include "components/sync/model/sync_change.h"
 #include "components/sync/model/sync_data.h"
 #include "components/sync/model/sync_error.h"
 #include "components/sync/model/syncable_service.h"
 
@@ skipping 14 matching lines @@
 
 class AutofillTable;
 
 // The sync implementation for autocomplete.
 // MergeDataAndStartSyncing() called first, it does cloud->local and
 // local->cloud syncs. Then for each cloud change we receive
 // ProcessSyncChanges() and for each local change Observe() is called.
 class AutocompleteSyncableService
     : public base::SupportsUserData::Data,
       public syncer::SyncableService,
-      public AutofillWebDataServiceObserverOnDBThread,
-      public base::NonThreadSafe {
+      public AutofillWebDataServiceObserverOnDBThread {
  public:
   ~AutocompleteSyncableService() override;
 
   // Creates a new AutocompleteSyncableService and hangs it off of
   // |web_data_service|, which takes ownership.
   static void CreateForWebDataServiceAndBackend(
       AutofillWebDataService* web_data_service,
       AutofillWebDataBackend* web_data_backend);
 
   // Retrieves the AutocompleteSyncableService stored on |web_data_service|.
@@ skipping 91 matching lines @@
   // We receive ownership of |sync_processor_| in MergeDataAndStartSyncing() and
   // destroy it in StopSyncing().
   std::unique_ptr<syncer::SyncChangeProcessor> sync_processor_;
 
   // We receive ownership of |error_handler_| in MergeDataAndStartSyncing() and
   // destroy it in StopSyncing().
   std::unique_ptr<syncer::SyncErrorFactory> error_handler_;
 
   syncer::SyncableService::StartSyncFlare flare_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(AutocompleteSyncableService);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_WEBDATA_AUTOCOMPLETE_SYNCABLE_SERVICE_H_