[GRC] Process Coordination Unit support for Global Resource Controller

services/resource_coordinator/coordination_unit/coordination_unit_impl_unittest_util.cc

+// Copyright 2017 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 "services/resource_coordinator/coordination_unit/coordination_unit_impl_unittest_util.h"
+
+#include "base/bind.h"
+#include "base/run_loop.h"
+
+namespace resource_coordinator {
+
+namespace {
+
+void OnLastServiceRefDestroyed() {
+  // No-op. This is required by service_manager::ServiceContextRefFactory
+  // construction but not needed for the tests.
+}
+
+}  // namespace
+
+CoordinationUnitImplTestBase::CoordinationUnitImplTestBase()
+    : service_ref_factory_(base::Bind(&OnLastServiceRefDestroyed)),
+      provider_(&service_ref_factory_) {}
+
+CoordinationUnitImplTestBase::~CoordinationUnitImplTestBase() = default;
+
+void CoordinationUnitImplTestBase::TearDown() {
+  base::RunLoop().RunUntilIdle();
+}
+
+}  // namespace resource_coordinator