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

services/navigation/navigation.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_NAVIGATION_NAVIGATION_H_
 #define SERVICES_NAVIGATION_NAVIGATION_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/sequenced_task_runner.h"
@@ skipping 12 matching lines @@
 
 std::unique_ptr<service_manager::Service> CreateNavigationService();
 
 class Navigation : public service_manager::Service, public mojom::ViewFactory {
  public:
   Navigation();
   ~Navigation() override;
 
  private:
   // service_manager::Service:
-  void OnStart(service_manager::ServiceContext* context) override;
   bool OnConnect(const service_manager::ServiceInfo& remote_info,
                  service_manager::InterfaceRegistry* registry) override;
 
   // mojom::ViewFactory:
   void CreateView(mojom::ViewClientPtr client,
                   mojom::ViewRequest request) override;
 
   void CreateViewFactory(mojom::ViewFactoryRequest request);
   void ViewFactoryLost();
 
   scoped_refptr<base::SequencedTaskRunner> view_task_runner_;
 
-  service_manager::ServiceContext* context_;
-
   std::string client_user_id_;
 
   service_manager::ServiceContextRefFactory ref_factory_;
   std::set<std::unique_ptr<service_manager::ServiceContextRef>> refs_;
 
   mojo::BindingSet<mojom::ViewFactory> bindings_;
 
   base::WeakPtrFactory<Navigation> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Navigation);
 };
 
 }  // navigation
 
 #endif  // SERVICES_NAVIGATION_NAVIGATION_H_