Test service as minimum repro for sharing memory handle

services/test/service_impl.h

Index: services/test/service_impl.h
diff --git a/services/test/service_impl.h b/services/test/service_impl.h
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+++ b/services/test/service_impl.h
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+// 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_TEST_SERVICE_IMPL_H_
+#define SERVICES_TEST_SERVICE_IMPL_H_
+
+#include <memory>
+
+#include "base/memory/shared_memory.h"
+#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/test/public/interfaces/service.mojom.h"
+
+namespace test {
+
+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<test::mojom::Service>:
+  void Create(const service_manager::Identity& remote_identity,
+              mojom::ServiceRequest request) override;
+
+  // test::mojom::Service
+  void ShareBufferToTestReceiver(mojom::ReceiverPtr receiver) override;
+
+ private:
+  service_manager::BinderRegistry registry_;
+  mojo::BindingSet<mojom::Service> service_bindings_;
+
+  mojom::ReceiverPtr test_receiver_;
+  base::SharedMemory shared_memory_;
+};
+
+}  // namespace test
+
+#endif  // SERVICES_TEST_SERVICE_IMPL_H_