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

services/service_manager/tests/lifecycle/parent.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 <memory>
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
@@ skipping 18 matching lines @@
                public service_manager::test::mojom::Parent {
  public:
   Parent() {}
   ~Parent() override {
     child_connection_.reset();
     parent_bindings_.CloseAllBindings();
   }
 
  private:
   // Service:
-  void OnStart(service_manager::ServiceContext* context) override {
-    context_ = context;
-  }
-
   bool OnConnect(const service_manager::ServiceInfo& remote_info,
                  service_manager::InterfaceRegistry* registry) override {
     registry->AddInterface<service_manager::test::mojom::Parent>(this);
     return true;
   }
 
   // InterfaceFactory<service_manager::test::mojom::Parent>:
   void Create(const service_manager::Identity& remote_identity,
               service_manager::test::mojom::ParentRequest request) override {
     parent_bindings_.AddBinding(this, std::move(request));
   }
 
   // service_manager::test::mojom::Parent:
   void ConnectToChild(const ConnectToChildCallback& callback) override {
     child_connection_ =
-        context_->connector()->Connect("service:lifecycle_unittest_app");
+        context()->connector()->Connect("service:lifecycle_unittest_app");
     service_manager::test::mojom::LifecycleControlPtr lifecycle;
     child_connection_->GetInterface(&lifecycle);
     {
       base::RunLoop loop;
       lifecycle->Ping(base::Bind(&QuitLoop, &loop));
       base::MessageLoop::ScopedNestableTaskAllower allow(
           base::MessageLoop::current());
       loop.Run();
     }
     callback.Run();
   }
   void Quit() override {
     base::MessageLoop::current()->QuitWhenIdle();
   }
 
-  service_manager::ServiceContext* context_ = nullptr;
   std::unique_ptr<service_manager::Connection> child_connection_;
   mojo::BindingSet<service_manager::test::mojom::Parent> parent_bindings_;
 
   DISALLOW_COPY_AND_ASSIGN(Parent);
 };
 
 }  // namespace
 
 MojoResult ServiceMain(MojoHandle service_request_handle) {
   Parent* parent = new Parent;
   return service_manager::ServiceRunner(parent).Run(service_request_handle);
 }