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

services/service_manager/tests/shutdown/shutdown_client_app.cc

 // 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.
 
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "services/service_manager/public/c/main.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/service_manager/public/cpp/interface_factory.h"
 #include "services/service_manager/public/cpp/interface_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_runner.h"
 #include "services/service_manager/tests/shutdown/shutdown_unittest.mojom.h"
 
 namespace service_manager {
 
 class ShutdownClientApp
     : public Service,
       public InterfaceFactory<mojom::ShutdownTestClientController>,
       public mojom::ShutdownTestClientController,
       public mojom::ShutdownTestClient {
  public:
   ShutdownClientApp() {}
   ~ShutdownClientApp() override {}
 
  private:
   // service_manager::Service:
+  void OnStart(ServiceContext* context) override {
+    context_ = context;
+  }
+
   bool OnConnect(const ServiceInfo& remote_info,
                  InterfaceRegistry* registry) override {
     registry->AddInterface<mojom::ShutdownTestClientController>(this);
     return true;
   }
 
   // InterfaceFactory<mojom::ShutdownTestClientController>:
   void Create(const Identity& remote_identity,
               mojom::ShutdownTestClientControllerRequest request) override {
     bindings_.AddBinding(this, std::move(request));
   }
 
   // mojom::ShutdownTestClientController:
   void ConnectAndWait(const ConnectAndWaitCallback& callback) override {
     mojom::ShutdownTestServicePtr service;
-    context()->connector()->ConnectToInterface(
+    context_->connector()->ConnectToInterface(
         "service:shutdown_service", &service);
 
     mojo::Binding<mojom::ShutdownTestClient> client_binding(this);
 
     mojom::ShutdownTestClientPtr client_ptr =
         client_binding.CreateInterfacePtrAndBind();
 
     service->SetClient(std::move(client_ptr));
 
     base::MessageLoop::ScopedNestableTaskAllower nestable_allower(
         base::MessageLoop::current());
     base::RunLoop run_loop;
     client_binding.set_connection_error_handler(run_loop.QuitClosure());
     run_loop.Run();
 
     callback.Run();
   }
 
+  ServiceContext* context_ = nullptr;
   mojo::BindingSet<mojom::ShutdownTestClientController> bindings_;
 
   DISALLOW_COPY_AND_ASSIGN(ShutdownClientApp);
 };
 
 }  // namespace service_manager
 
 MojoResult ServiceMain(MojoHandle service_request_handle) {
   service_manager::ServiceRunner runner(new service_manager::ShutdownClientApp);
   return runner.Run(service_request_handle);
 }