Revert of Wires up view manager to an actual display

mojo/services/view_manager/view_manager.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 "base/message_loop/message_loop.h"
+#include "mojo/public/cpp/shell/application.h"
+#include "mojo/services/view_manager/root_node_manager.h"
+#include "mojo/services/view_manager/view_manager_connection.h"
+
+#if defined(WIN32)
+#if !defined(CDECL)
+#define CDECL __cdecl)
+#endif
+#define VIEW_MANAGER_EXPORT __declspec(dllexport)
+#else
+#define CDECL
+#define VIEW_MANAGER_EXPORT __attribute__((visibility("default")))
+#endif
+
+extern "C" VIEW_MANAGER_EXPORT MojoResult CDECL MojoMain(
+    MojoHandle shell_handle) {
+  base::MessageLoop loop;
+  mojo::Application app(shell_handle);
+  mojo::services::view_manager::RootNodeManager root_node_manager;
+  app.AddServiceConnector(new mojo::ServiceConnector
+                          <mojo::services::view_manager::ViewManagerConnection,
+                           mojo::services::view_manager::RootNodeManager>(
+                               &root_node_manager));
+  loop.Run();
+
+  return MOJO_RESULT_OK;
+}