[Sync] Convert DTCs to be not RefCounted and NonThreadSafe.

components/sync/core_impl/test/data_type_error_handler_mock.cc

Index: components/sync/core_impl/test/data_type_error_handler_mock.cc
diff --git a/components/sync/core_impl/test/data_type_error_handler_mock.cc b/components/sync/core_impl/test/data_type_error_handler_mock.cc
deleted file mode 100644
index 3005dace84ce79dccbed1fb6effcca11d48db5bf..0000000000000000000000000000000000000000
--- a/components/sync/core_impl/test/data_type_error_handler_mock.cc
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright 2014 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.
-
-#include "components/sync/core/test/data_type_error_handler_mock.h"
-
-namespace syncer {
-
-DataTypeErrorHandlerMock::DataTypeErrorHandlerMock() {}
-
-DataTypeErrorHandlerMock::~DataTypeErrorHandlerMock() {
-  DCHECK_EQ(SyncError::UNSET, expected_error_type_);
-}
-
-void DataTypeErrorHandlerMock::OnSingleDataTypeUnrecoverableError(
-    const SyncError& error) {
-  DCHECK_NE(SyncError::UNSET, expected_error_type_);
-  DCHECK(error.IsSet());
-  DCHECK_EQ(expected_error_type_, error.error_type());
-  expected_error_type_ = SyncError::UNSET;
-}
-
-SyncError DataTypeErrorHandlerMock::CreateAndUploadError(
-    const tracked_objects::Location& location,
-    const std::string& message,
-    ModelType type) {
-  return SyncError(location, SyncError::DATATYPE_ERROR, message, type);
-}
-
-void DataTypeErrorHandlerMock::ExpectError(SyncError::ErrorType error_type) {
-  DCHECK_EQ(SyncError::UNSET, expected_error_type_);
-  expected_error_type_ = error_type;
-}
-
-}  // namespace syncer