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

services/video_capture/device_factory_provider_impl.h

-// Copyright 2016 The Chromium Authors. All rights reserved.
+// 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_VIDEO_CAPTURE_VIDEO_CAPTURE_SERVICE_H_
-#define SERVICES_VIDEO_CAPTURE_VIDEO_CAPTURE_SERVICE_H_
+#ifndef SERVICES_VIDEO_CAPTURE_DEVICE_FACTORY_PROVIDER_H_
+#define SERVICES_VIDEO_CAPTURE_DEVICE_FACTORY_PROVIDER_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"
+#include "services/service_manager/public/cpp/service_context_ref.h"
+#include "services/video_capture/public/interfaces/device_factory_provider.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 {
+class DeviceFactoryProviderImpl : public mojom::DeviceFactoryProvider {
  public:
-  ServiceImpl();
-  ~ServiceImpl() override;
+  DeviceFactoryProviderImpl(
+      std::unique_ptr<service_manager::ServiceContextRef> service_ref,
+      base::Callback<void(float)> set_shutdown_delay_cb);
+  ~DeviceFactoryProviderImpl() 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
+  // mojom::DeviceFactoryProvider implementation.
   void ConnectToDeviceFactory(mojom::DeviceFactoryRequest request) override;
   void ConnectToFakeDeviceFactory(mojom::DeviceFactoryRequest request) override;
+  void SetShutdownDelayInSeconds(float seconds) 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_;
+
+  const std::unique_ptr<service_manager::ServiceContextRef> service_ref_;
+  base::Callback<void(float)> set_shutdown_delay_cb_;
+
+  DISALLOW_COPY_AND_ASSIGN(DeviceFactoryProviderImpl);
 };
 
 }  // namespace video_capture
 
-#endif  // SERVICES_VIDEO_CAPTURE_VIDEO_CAPTURE_SERVICE_H_
+#endif  // SERVICES_VIDEO_CAPTURE_DEVICE_FACTORY_PROVIDER_H_