Revert of Wires up view manager to an actual display

mojo/services/view_manager/main.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/at_exit.h"
-#include "base/command_line.h"
-#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) {
-  CommandLine::Init(0, NULL);
-  base::AtExitManager at_exit;
-  base::MessageLoop loop;
-  mojo::Application app(shell_handle);
-  mojo::services::view_manager::RootNodeManager root_node_manager(app.shell());
-  app.AddServiceConnector(new mojo::ServiceConnector
-                          <mojo::services::view_manager::ViewManagerConnection,
-                           mojo::services::view_manager::RootNodeManager>(
-                               &root_node_manager));
-  loop.Run();
-
-  return MOJO_RESULT_OK;
-}