Revert of [Sync] Move //components/sync to the syncer namespace. (patchset #5 id:40001 of https://co

components/sync/api/model_type_change_processor.h

 // Copyright 2015 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_SYNC_API_MODEL_TYPE_CHANGE_PROCESSOR_H_
 #define COMPONENTS_SYNC_API_MODEL_TYPE_CHANGE_PROCESSOR_H_
 
 #include <memory>
 #include <string>
 
 #include "components/sync/api/data_type_error_handler.h"
 #include "components/sync/api/entity_data.h"
 #include "components/sync/api/sync_error_factory.h"
 #include "components/sync/core/activation_context.h"
 
 namespace syncer {
 class SyncError;
 }  // namespace syncer
 
-namespace syncer {
+namespace syncer_v2 {
 
 class MetadataBatch;
 class MetadataChangeList;
 
 // Interface used by the ModelTypeService to inform sync of local
 // changes.
-class ModelTypeChangeProcessor : public SyncErrorFactory {
+class ModelTypeChangeProcessor : public syncer::SyncErrorFactory {
  public:
-  typedef base::Callback<void(SyncError, std::unique_ptr<ActivationContext>)>
+  typedef base::Callback<void(syncer::SyncError,
+                              std::unique_ptr<ActivationContext>)>
       StartCallback;
 
   ModelTypeChangeProcessor();
   ~ModelTypeChangeProcessor() override;
 
   // Inform the processor of a new or updated entity. The |entity_data| param
   // does not need to be fully set, but it should at least have specifics and
   // non-unique name. The processor will fill in the rest if the service does
   // not have a reason to care.
   virtual void Put(const std::string& storage_key,
                    std::unique_ptr<EntityData> entity_data,
                    MetadataChangeList* metadata_change_list) = 0;
 
   // Inform the processor of a deleted entity.
   virtual void Delete(const std::string& storage_key,
                       MetadataChangeList* metadata_change_list) = 0;
 
   // Accept the initial sync metadata loaded by the service. This should be
   // called as soon as the metadata is available to the service.
-  virtual void OnMetadataLoaded(SyncError error,
+  virtual void OnMetadataLoaded(syncer::SyncError error,
                                 std::unique_ptr<MetadataBatch> batch) = 0;
 
   // Indicates that sync wants to connect a sync worker to this processor. Once
   // the processor has metadata from the service, it will pass the info needed
   // for the worker into |callback|. |error_handler| is how the processor will
   // inform sync of any unrecoverable errors after calling |callback|, and it is
   // guaranteed to outlive the processor. StartCallback takes a SyncError and an
   // ActivationContext; the context should be nullptr iff the error is set.
   virtual void OnSyncStarting(
-      std::unique_ptr<DataTypeErrorHandler> error_handler,
+      std::unique_ptr<syncer::DataTypeErrorHandler> error_handler,
       const StartCallback& callback) = 0;
 
   // Indicates that sync is being disabled permanently for this data type. All
   // metadata should be erased from storage.
   virtual void DisableSync() = 0;
 };
 
-}  // namespace syncer
+}  // namespace syncer_v2
 
 #endif  // COMPONENTS_SYNC_API_MODEL_TYPE_CHANGE_PROCESSOR_H_