[Sync] Move DataTypeErrorHandler to //sync.

sync/internal_api/test/data_type_error_handler_mock.cc

Index: sync/internal_api/test/data_type_error_handler_mock.cc
diff --git a/components/sync_driver/data_type_error_handler_mock.cc b/sync/internal_api/test/data_type_error_handler_mock.cc
similarity index 70%
rename from components/sync_driver/data_type_error_handler_mock.cc
rename to sync/internal_api/test/data_type_error_handler_mock.cc
index d6ab98f9f66cfcedd71dbcdaee65a392c31b78d5..3af73ce06e1edde1627313dbc0f9c4cfd454142f 100644
--- a/components/sync_driver/data_type_error_handler_mock.cc
+++ b/sync/internal_api/test/data_type_error_handler_mock.cc
@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "components/sync_driver/data_type_error_handler_mock.h"
+#include "sync/internal_api/public/test/data_type_error_handler_mock.h"
 
-namespace sync_driver {
+namespace syncer {
 
 DataTypeErrorHandlerMock::DataTypeErrorHandlerMock() {}
 
 DataTypeErrorHandlerMock::~DataTypeErrorHandlerMock() {}
 
-}  // namespace sync_driver
+}  // namespace syncer