[Sync] Move model_type* from syncable/ to base/

sync/notifier/invalidation_util.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.
 //
 // Various utilities for dealing with invalidation data types.
 
 #ifndef SYNC_NOTIFIER_INVALIDATION_UTIL_H_
 #define SYNC_NOTIFIER_INVALIDATION_UTIL_H_
 #pragma once
 
 #include <set>
 #include <string>
 
-#include "sync/internal_api/public/syncable/model_type.h"
+#include "sync/internal_api/public/base/model_type.h"
 
 namespace invalidation {
 
 class Invalidation;
 class ObjectId;
 
 }  // namespace invalidation
 
 namespace syncer {
 
@@ skipping 11 matching lines @@
                              syncable::ModelType* model_type);
 
 std::string ObjectIdToString(const invalidation::ObjectId& object_id);
 
 std::string InvalidationToString(
     const invalidation::Invalidation& invalidation);
 
 }  // namespace syncer
 
 #endif  // SYNC_NOTIFIER_INVALIDATION_UTIL_H_