Add RunMainApplication()/TerminateMainApplication() for use in MojoMain().

services/test_service/test_service_application.cc

Index: services/test_service/test_service_application.cc
diff --git a/services/test_service/test_service_application.cc b/services/test_service/test_service_application.cc
index af116a387c0f0ed41b72aa8dfabe99271a99a859..5e623b6e4421080a6d5ab1c0459b7cc09e1a4ba2 100644
--- a/services/test_service/test_service_application.cc
+++ b/services/test_service/test_service_application.cc
@@ -52,5 +52,5 @@ void TestServiceApplication::ReleaseRef() {
 
 MojoResult MojoMain(MojoHandle application_request) {
   mojo::test::TestServiceApplication app;
-  return mojo::RunApplication(application_request, &app);
+  return mojo::RunMainApplication(application_request, &app);
 }