[Mojo Video Capture] Stop service when last client disconnects.

services/video_capture/test/device_factory_provider_test.cc

+// Copyright 2016 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/video_capture/test/device_factory_provider_test.h"
+
+#include "services/service_manager/public/interfaces/constants.mojom.h"
+#include "services/service_manager/public/interfaces/service_manager.mojom.h"
+#include "services/video_capture/public/interfaces/constants.mojom.h"
+
+namespace video_capture {
+
+ServiceManagerListenerImpl::ServiceManagerListenerImpl(
+    service_manager::mojom::ServiceManagerListenerRequest request,
+    base::RunLoop* loop)
+    : binding_(this, std::move(request)), loop_(loop) {}
+
+ServiceManagerListenerImpl::~ServiceManagerListenerImpl() = default;
+
+DeviceFactoryProviderTest::DeviceFactoryProviderTest()
+    : service_manager::test::ServiceTest("video_capture_unittests") {}
+
+DeviceFactoryProviderTest::~DeviceFactoryProviderTest() = default;
+
+void DeviceFactoryProviderTest::SetUp() {
+  service_manager::test::ServiceTest::SetUp();
+
+  service_manager::mojom::ServiceManagerPtr service_manager;
+  connector()->BindInterface(service_manager::mojom::kServiceName,
+                             &service_manager);
+  service_manager::mojom::ServiceManagerListenerPtr listener;
+  base::RunLoop loop;
+  service_state_observer_ = base::MakeUnique<ServiceManagerListenerImpl>(
+      mojo::MakeRequest(&listener), &loop);
+  service_manager->AddListener(std::move(listener));
+  loop.Run();
+
+  connector()->BindInterface(mojom::kServiceName, &factory_provider_);
+  factory_provider_->SetShutdownDelayInSeconds(0.0f);
+  factory_provider_->ConnectToFakeDeviceFactory(mojo::MakeRequest(&factory_));
+}
+
+}  // namespace video_capture