Move mojo\shell to services\shell

mojo/shell/background/background_shell_main.cc

-// 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 "mojo/shell/background/background_shell_main.h"
-
-#include "base/at_exit.h"
-#include "base/command_line.h"
-#include "base/debug/debugger.h"
-#include "base/process/launch.h"
-#include "mojo/shell/runner/common/switches.h"
-#include "mojo/shell/runner/host/child_process.h"
-#include "mojo/shell/runner/init.h"
-
-namespace mojo {
-namespace shell {
-namespace {
-
-int RunChildProcess() {
-  base::AtExitManager at_exit;
-  InitializeLogging();
-  WaitForDebuggerIfNecessary();
-#if !defined(OFFICIAL_BUILD) && defined(OS_WIN)
-  base::RouteStdioToConsole(false);
-#endif
-  return ChildProcessMain();
-}
-
-}  // namespace
-}  // shell
-}  // mojo
-
-int main(int argc, char** argv) {
-  base::CommandLine::Init(argc, argv);
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kChildProcess)) {
-    return mojo::shell::RunChildProcess();
-  }
-  // Reset CommandLine as most likely main() is going to use CommandLine too
-  // and expect to be able to initialize it.
-  base::CommandLine::Reset();
-  return MasterProcessMain(argc, argv);
-}