Service Manager: Remove ServiceContext* arg from Service::OnStart()

services/device/device_service.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_DEVICE_DEVICE_SERVICE_H_
 #define SERVICES_DEVICE_DEVICE_SERVICE_H_
 
 #include "base/callback_forward.h"
 #include "base/memory/ref_counted.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "services/service_manager/public/cpp/interface_factory.h"
 #include "services/service_manager/public/cpp/service.h"
 
 namespace device {
 
 std::unique_ptr<service_manager::Service> CreateDeviceService(
     scoped_refptr<base::SingleThreadTaskRunner> file_task_runner);
 
 class DeviceService : public service_manager::Service {
  public:
   explicit DeviceService(
       scoped_refptr<base::SingleThreadTaskRunner> file_task_runner);
   ~DeviceService() override;
 
  private:
   // service_manager::Service:
-  void OnStart(service_manager::ServiceContext* context) override;
+  void OnStart() override;
   bool OnConnect(const service_manager::ServiceInfo& remote_info,
                  service_manager::InterfaceRegistry* registry) override;
 
   scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceService);
 };
 
 }  // namespace device
 
 #endif  // SERVICES_DEVICE_DEVICE_SERVICE_H_