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

mash/example/views_examples/views_examples.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/macros.h"
 #include "base/memory/ptr_util.h"
 #include "mash/public/interfaces/launchable.mojom.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
@@ skipping 19 matching lines @@
 class ViewsExamples
     : public service_manager::Service,
       public mash::mojom::Launchable,
       public service_manager::InterfaceFactory<mash::mojom::Launchable> {
  public:
   ViewsExamples() {}
   ~ViewsExamples() override {}
 
  private:
   // service_manager::Service:
-  void OnStart() override {
-    tracing_.Initialize(context()->connector(), context()->identity().name());
+  void OnStart(service_manager::ServiceContext* context) override {
+    tracing_.Initialize(context->connector(), context->identity().name());
     aura_init_ = base::MakeUnique<views::AuraInit>(
-        context()->connector(), context()->identity(),
-        "views_mus_resources.pak");
+        context->connector(), context->identity(), "views_mus_resources.pak");
     window_manager_connection_ = views::WindowManagerConnection::Create(
-        context()->connector(), context()->identity());
+        context->connector(), context->identity());
   }
   bool OnConnect(const service_manager::ServiceInfo& remote_info,
                  service_manager::InterfaceRegistry* registry) override {
     registry->AddInterface<mash::mojom::Launchable>(this);
     return true;
   }
 
   // mash::mojom::Launchable:
   void Launch(uint32_t what, mash::mojom::LaunchMode how) override {
     views::examples::ShowExamplesWindow(views::examples::QUIT_ON_CLOSE,
@@ skipping 12 matching lines @@
   std::unique_ptr<views::AuraInit> aura_init_;
   std::unique_ptr<views::WindowManagerConnection> window_manager_connection_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewsExamples);
 };
 
 MojoResult ServiceMain(MojoHandle service_request_handle) {
   return service_manager::ServiceRunner(new ViewsExamples)
       .Run(service_request_handle);
 }