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

mash/example/window_type_launcher/window_type_launcher.cc

 // Copyright (c) 2012 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 "mash/example/window_type_launcher/window_type_launcher.h"
 
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 455 matching lines @@
 WindowTypeLauncher::~WindowTypeLauncher() {}
 
 void WindowTypeLauncher::RemoveWindow(views::Widget* window) {
   auto it = std::find(windows_.begin(), windows_.end(), window);
   DCHECK(it != windows_.end());
   windows_.erase(it);
   if (windows_.empty())
     base::MessageLoop::current()->QuitWhenIdle();
 }
 
-void WindowTypeLauncher::OnStart(service_manager::ServiceContext* context) {
-  context_ = context;
+void WindowTypeLauncher::OnStart() {
   aura_init_ = base::MakeUnique<views::AuraInit>(
-      context->connector(), context->identity(), "views_mus_resources.pak",
+      context()->connector(), context()->identity(), "views_mus_resources.pak",
       std::string(), nullptr, views::AuraInit::Mode::AURA_MUS);
 }
 
 bool WindowTypeLauncher::OnConnect(
     const service_manager::ServiceInfo& remote_info,
     service_manager::InterfaceRegistry* registry) {
   registry->AddInterface<mash::mojom::Launchable>(this);
   return true;
 }
 
 void WindowTypeLauncher::Launch(uint32_t what, mash::mojom::LaunchMode how) {
   bool reuse = how == mash::mojom::LaunchMode::REUSE ||
                how == mash::mojom::LaunchMode::DEFAULT;
   if (reuse && !windows_.empty()) {
     windows_.back()->Activate();
     return;
   }
   views::Widget* window = new views::Widget;
   views::Widget::InitParams params(views::Widget::InitParams::TYPE_WINDOW);
-  params.delegate = new WindowTypeLauncherView(this, context_->connector());
+  params.delegate = new WindowTypeLauncherView(this, context()->connector());
   window->Init(params);
   window->Show();
   windows_.push_back(window);
 }
 
 void WindowTypeLauncher::Create(
     const service_manager::Identity& remote_identity,
     mash::mojom::LaunchableRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
 MojoResult ServiceMain(MojoHandle service_request_handle) {
   return service_manager::ServiceRunner(new WindowTypeLauncher)
       .Run(service_request_handle);
 }