Move chrome/browser/chromeos/process_proxy to chromeos

chrome/browser/chromeos/process_proxy/process_output_watcher.h

-// Copyright (c) 2012 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 CHROME_BROWSER_CHROMEOS_PROCESS_PROXY_PROCESS_OUTPUT_WATCHER_H_
-#define CHROME_BROWSER_CHROMEOS_PROCESS_PROXY_PROCESS_OUTPUT_WATCHER_H_
-
-#include <string>
-
-#include "base/callback.h"
-
-namespace {
-
-const int kReadBufferSize = 256;
-
-}  // namespace
-
-enum ProcessOutputType {
-  PROCESS_OUTPUT_TYPE_OUT,
-  PROCESS_OUTPUT_TYPE_ERR,
-  PROCESS_OUTPUT_TYPE_EXIT
-};
-
-typedef base::Callback<void(ProcessOutputType, const std::string&)>
-      ProcessOutputCallback;
-
-// This class should live on its own thread because running class makes
-// underlying thread block. It deletes itself when watching is stopped.
-class ProcessOutputWatcher {
- public:
-  ProcessOutputWatcher(int out_fd, int stop_fd,
-                       const ProcessOutputCallback& callback);
-
-  // This will block current thread!!!!
-  void Start();
-
- private:
-  // The object will destroy itself when it stops watching process output.
-  ~ProcessOutputWatcher();
-
-  // Listens to output from supplied fds. It guarantees data written to one fd
-  // will be reported in order that it has been written (this is not true across
-  // fds, it would be nicer if it was).
-  void WatchProcessOutput();
-
-  // Verifies that fds that we got are properly set.
-  void VerifyFileDescriptor(int fd);
-
-  // Reads data from fd, and when it's done, invokes callback function.
-  void ReadFromFd(ProcessOutputType type, int* fd);
-
-  // It will just delete this.
-  void OnStop();
-
-  char read_buffer_[kReadBufferSize];
-  ssize_t read_buffer_size_;
-
-  int out_fd_;
-  int stop_fd_;
-  int max_fd_;
-
-  // Callback that will be invoked when some output is detected.
-  ProcessOutputCallback on_read_callback_;
-
-  DISALLOW_COPY_AND_ASSIGN(ProcessOutputWatcher);
-};
-#endif  // CHROME_BROWSER_CHROMEOS_PROCESS_PROXY_PROCESS_OUTPUT_WATCHER_H_