[DeviceService] Add service tests for VibrationManager.

services/device/device_service_test_base.h

+// 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.
+
+#ifndef SERVICES_DEVICE_DEVICE_SERVICE_TEST_BASE_H_
+#define SERVICES_DEVICE_DEVICE_SERVICE_TEST_BASE_H_
+
+#include "base/macros.h"
+#include "services/service_manager/public/cpp/service_test.h"
+
+namespace device {
+
+// Base class responsible to setup Device Service for test.
+class DeviceServiceTestBase : public service_manager::test::ServiceTest {
+ public:
+  DeviceServiceTestBase();
+  ~DeviceServiceTestBase() override;
+
+ private:
+  // service_manager::test::ServiceTest:
+  std::unique_ptr<service_manager::Service> CreateService() override;
+
+  DISALLOW_COPY_AND_ASSIGN(DeviceServiceTestBase);
+};
+
+}  // namespace device
+
+#endif  // SERVICES_DEVICE_DEVICE_SERVICE_TEST_BASE_H_