Mus Demo: Extract code specific to internal mode into a separate class

services/ui/demo/main.cc

Index: services/ui/demo/main.cc
diff --git a/services/ui/demo/main.cc b/services/ui/demo/main.cc
deleted file mode 100644
index ecf56bd8398f53749ff9e6f58770784fb2b72150..0000000000000000000000000000000000000000
--- a/services/ui/demo/main.cc
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright 2016 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/service_manager/public/c/main.h"
-#include "services/service_manager/public/cpp/service_runner.h"
-#include "services/ui/demo/mus_demo.h"
-
-MojoResult ServiceMain(MojoHandle service_request_handle) {
-  service_manager::ServiceRunner runner(new ui::demo::MusDemo);
-  return runner.Run(service_request_handle);
-}