[Sync] Move ModelType and related classes to 'syncer' namespace

sync/internal_api/public/engine/model_safe_worker.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 SYNC_INTERNAL_API_PUBLIC_ENGINE_MODEL_SAFE_WORKER_H_
 #define SYNC_INTERNAL_API_PUBLIC_ENGINE_MODEL_SAFE_WORKER_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 46 matching lines @@
 
   virtual ModelSafeGroup GetModelSafeGroup() = 0;
 
  protected:
   virtual ~ModelSafeWorker();
 
  private:
   friend class base::RefCountedThreadSafe<ModelSafeWorker>;
 };
 
-// A map that details which ModelSafeGroup each syncable::ModelType
+// A map that details which ModelSafeGroup each syncer::ModelType
 // belongs to.  Routing info can change in response to the user enabling /
 // disabling sync for certain types, as well as model association completions.
-typedef std::map<syncable::ModelType, ModelSafeGroup>
+typedef std::map<syncer::ModelType, ModelSafeGroup>
     ModelSafeRoutingInfo;
 
 // Caller takes ownership of return value.
 base::DictionaryValue* ModelSafeRoutingInfoToValue(
     const ModelSafeRoutingInfo& routing_info);
 
 std::string ModelSafeRoutingInfoToString(
     const ModelSafeRoutingInfo& routing_info);
 
 // Make a ModelTypePayloadMap for all the enabled types in a
 // ModelSafeRoutingInfo using a default payload.
-syncable::ModelTypePayloadMap ModelSafeRoutingInfoToPayloadMap(
+syncer::ModelTypePayloadMap ModelSafeRoutingInfoToPayloadMap(
     const ModelSafeRoutingInfo& routes,
     const std::string& payload);
 
-syncable::ModelTypeSet GetRoutingInfoTypes(
+syncer::ModelTypeSet GetRoutingInfoTypes(
     const ModelSafeRoutingInfo& routing_info);
 
-ModelSafeGroup GetGroupForModelType(const syncable::ModelType type,
+ModelSafeGroup GetGroupForModelType(const syncer::ModelType type,
                                     const ModelSafeRoutingInfo& routes);
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_ENGINE_MODEL_SAFE_WORKER_H_