Make RunApplication() return a MojoResult and TerminateApplication() take one.

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 c883cefd8d9250d68fb272f6ebbbad24cf92302b..af116a387c0f0ed41b72aa8dfabe99271a99a859 100644
--- a/services/test_service/test_service_application.cc
+++ b/services/test_service/test_service_application.cc
@@ -44,7 +44,7 @@ void TestServiceApplication::ReleaseRef() {
   assert(ref_count_ > 0);
   ref_count_--;
   if (ref_count_ <= 0)
-    TerminateApplication();
+    TerminateApplication(MOJO_RESULT_OK);
 }
 
 }  // namespace test
@@ -52,6 +52,5 @@ void TestServiceApplication::ReleaseRef() {
 
 MojoResult MojoMain(MojoHandle application_request) {
   mojo::test::TestServiceApplication app;
-  mojo::RunApplication(application_request, &app);
-  return MOJO_RESULT_OK;
+  return mojo::RunApplication(application_request, &app);
 }