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

services/ui/ime/test_ime_driver/test_ime_application.cc

Index: services/ui/ime/test_ime_driver/test_ime_application.cc
diff --git a/services/ui/ime/test_ime_driver/test_ime_application.cc b/services/ui/ime/test_ime_driver/test_ime_application.cc
index 19a3f88724a17f0f0622e54aa35d56e32f00ef0a..d84e4481fd0d442a47aec2cda02e6ded842f8f88 100644
--- a/services/ui/ime/test_ime_driver/test_ime_application.cc
+++ b/services/ui/ime/test_ime_driver/test_ime_application.cc
@@ -17,13 +17,13 @@
 
 TestIMEApplication::~TestIMEApplication() {}
 
-void TestIMEApplication::OnStart() {
+void TestIMEApplication::OnStart(service_manager::ServiceContext* context) {
   mojom::IMEDriverPtr ime_driver_ptr;
   mojo::MakeStrongBinding(base::MakeUnique<TestIMEDriver>(),
                           GetProxy(&ime_driver_ptr));
 
   ui::mojom::IMERegistrarPtr ime_registrar;
-  context()->connector()->ConnectToInterface("service:ui", &ime_registrar);
+  context->connector()->ConnectToInterface("service:ui", &ime_registrar);
   ime_registrar->RegisterDriver(std::move(ime_driver_ptr));
 }