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

sync/syncable/entry_kernel.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_SYNCABLE_ENTRY_KERNEL_H_
 #define SYNC_SYNCABLE_ENTRY_KERNEL_H_
 #pragma once
 
 #include "base/time.h"
 #include "base/values.h"
@@ skipping 273 matching lines @@
   inline std::string& mutable_ref(StringField field) {
     return string_fields[field - STRING_FIELDS_BEGIN];
   }
   inline sync_pb::EntitySpecifics& mutable_ref(ProtoField field) {
     return specifics_fields[field - PROTO_FIELDS_BEGIN];
   }
   inline Id& mutable_ref(IdField field) {
     return id_fields[field - ID_FIELDS_BEGIN];
   }
 
-  syncable::ModelType GetServerModelType() const;
+  syncer::ModelType GetServerModelType() const;
 
   // Dumps all kernel info into a DictionaryValue and returns it.
   // Transfers ownership of the DictionaryValue to the caller.
   base::DictionaryValue* ToValue() const;
 
  private:
   // Tracks whether this entry needs to be saved to the database.
   bool dirty_;
 };
 
@@ skipping 11 matching lines @@
     const EntryKernelMutation& mutation);
 
 // Caller owns the return value.
 base::ListValue* EntryKernelMutationMapToValue(
     const EntryKernelMutationMap& mutations);
 
 }  // namespace syncable
 }  // namespace syncer
 
 #endif // SYNC_SYNCABLE_ENTRY_KERNEL_H_