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

services/video_capture/service_impl.h

-// 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.
-
-#ifndef SERVICES_VIDEO_CAPTURE_VIDEO_CAPTURE_SERVICE_H_
-#define SERVICES_VIDEO_CAPTURE_VIDEO_CAPTURE_SERVICE_H_
-
-#include <memory>
-
-#include "mojo/public/cpp/bindings/binding_set.h"
-#include "services/service_manager/public/cpp/binder_registry.h"
-#include "services/service_manager/public/cpp/interface_factory.h"
-#include "services/service_manager/public/cpp/service.h"
-#include "services/video_capture/public/interfaces/service.mojom.h"
-
-namespace video_capture {
-
-class DeviceFactoryMediaToMojoAdapter;
-
-// Implementation of video_capture::mojom::Service as a Service Manager service.
-class ServiceImpl : public service_manager::Service,
-                    public service_manager::InterfaceFactory<mojom::Service>,
-                    public mojom::Service {
- public:
-  ServiceImpl();
-  ~ServiceImpl() override;
-
-  // service_manager::Service:
-  void OnBindInterface(const service_manager::ServiceInfo& source_info,
-                       const std::string& interface_name,
-                       mojo::ScopedMessagePipeHandle interface_pipe) override;
-
-  // service_manager::InterfaceFactory<video_capture::mojom::Service>:
-  void Create(const service_manager::Identity& remote_identity,
-              mojom::ServiceRequest request) override;
-
-  // video_capture::mojom::Service
-  void ConnectToDeviceFactory(mojom::DeviceFactoryRequest request) override;
-  void ConnectToFakeDeviceFactory(mojom::DeviceFactoryRequest request) override;
-
- private:
-  void LazyInitializeDeviceFactory();
-  void LazyInitializeFakeDeviceFactory();
-
-  service_manager::BinderRegistry registry_;
-  mojo::BindingSet<mojom::Service> service_bindings_;
-  mojo::BindingSet<mojom::DeviceFactory> factory_bindings_;
-  mojo::BindingSet<mojom::DeviceFactory> fake_factory_bindings_;
-  std::unique_ptr<DeviceFactoryMediaToMojoAdapter> device_factory_;
-  std::unique_ptr<DeviceFactoryMediaToMojoAdapter> fake_device_factory_;
-};
-
-}  // namespace video_capture
-
-#endif  // SERVICES_VIDEO_CAPTURE_VIDEO_CAPTURE_SERVICE_H_