arc: Remove components/arc/standalone

components/arc/standalone/service_helper.h

-// 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.
-
-#ifndef COMPONENTS_ARC_STANDALONE_SERVICE_HELPER_H_
-#define COMPONENTS_ARC_STANDALONE_SERVICE_HELPER_H_
-
-#include <signal.h>
-
-#include <memory>
-
-#include "base/files/file_descriptor_watcher_posix.h"
-#include "base/files/scoped_file.h"
-
-namespace arc {
-
-// Helper class to set up service-like processes.
-class ServiceHelper {
- public:
-  ServiceHelper();
-  ~ServiceHelper();
-
-  // Must be called after message loop instantiation.
-  void Init(const base::Closure& closure);
-
- private:
-  void OnFileCanReadWithoutBlocking();
-
-  static void TerminationHandler(int /* signum */);
-
-  // Static variable to guarantee instantiated only once per process.
-  static ServiceHelper* self_;
-
-  base::Closure closure_;
-  base::ScopedFD read_fd_;
-  base::ScopedFD write_fd_;
-  std::unique_ptr<base::FileDescriptorWatcher::Controller> watch_controller_;
-  struct sigaction old_sigint_;
-  struct sigaction old_sigterm_;
-
-  DISALLOW_COPY_AND_ASSIGN(ServiceHelper);
-};
-
-}  // namespace arc
-
-#endif  // COMPONENTS_ARC_STANDALONE_SERVICE_HELPER_H_