media: Use StrongBindingSet for InterfaceFactoryImpl in MediaService

media/mojo/services/media_service.h

 // Copyright 2014 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 MEDIA_MOJO_SERVICES_MEDIA_SERVICE_H_
 #define MEDIA_MOJO_SERVICES_MEDIA_SERVICE_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "media/base/media_log.h"
 #include "media/mojo/interfaces/interface_factory.mojom.h"
 #include "media/mojo/interfaces/media_service.mojom.h"
 #include "media/mojo/services/media_mojo_export.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
+#include "mojo/public/cpp/bindings/strong_binding_set.h"
 #include "services/service_manager/public/cpp/binder_registry.h"
 #include "services/service_manager/public/cpp/service.h"
 #include "services/service_manager/public/cpp/service_context.h"
 #include "services/service_manager/public/cpp/service_context_ref.h"
 #include "url/gurl.h"
 
 namespace media {
 
 class MojoMediaClient;
 
@@ skipping 18 matching lines @@
   // mojom::MediaService implementation.
   void CreateInterfaceFactory(
       mojom::InterfaceFactoryRequest request,
       service_manager::mojom::InterfaceProviderPtr host_interfaces) final;
 
   // Note: Since each instance runs on a different thread, do not share a common
   // MojoMediaClient with other instances to avoid threading issues. Hence using
   // a unique_ptr here.
   std::unique_ptr<MojoMediaClient> mojo_media_client_;
 
+  mojo::StrongBindingSet<mojom::InterfaceFactory> interface_factory_bindings_;
+
   MediaLog media_log_;
   std::unique_ptr<service_manager::ServiceContextRefFactory> ref_factory_;
 
   service_manager::BinderRegistry registry_;
   mojo::BindingSet<mojom::MediaService> bindings_;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_MEDIA_SERVICE_H_