Remove extensions::ServiceRegistrationManager.

extensions/browser/api/serial/serial_service_factory.h

+// Copyright 2015 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 EXTENSIONS_BROWSER_API_SERIAL_SERIAL_SERVICE_FACTORY_H_
+#define EXTENSIONS_BROWSER_API_SERIAL_SERIAL_SERVICE_FACTORY_H_
+
+#include "base/callback.h"
+#include "device/serial/serial.mojom.h"
+#include "extensions/browser/mojo/service_registration.h"
+
+namespace extensions {
+
+void BindToSerialServiceRequest(
+    mojo::InterfaceRequest<device::serial::SerialService> request);
+
+void SetSerialServiceFactoryForTest(const base::Callback<void(
+    mojo::InterfaceRequest<device::serial::SerialService> request)>* callback);
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_API_SERIAL_SERIAL_SERVICE_FACTORY_H_