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

services/test_service/test_request_tracker_application.cc

 // Copyright 2014 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 "services/test_service/test_request_tracker_application.h"
 
 #include "mojo/public/c/system/main.h"
 #include "mojo/public/cpp/application/run_application.h"
 #include "mojo/public/cpp/application/service_provider_impl.h"
 #include "services/test_service/test_time_service_impl.h"
@@ skipping 25 matching lines @@
         new TestTrackedRequestServiceImpl(request.Pass(), &context_);
       });
   return true;
 }
 
 }  // namespace test
 }  // namespace mojo
 
 MojoResult MojoMain(MojoHandle application_request) {
   mojo::test::TestRequestTrackerApplication app;
-  return mojo::RunApplication(application_request, &app);
+  return mojo::RunMainApplication(application_request, &app);
 }