Stop redirect stdout/stderr and remove close_fds=True

scripts/slave/recipe_modules/goma/resources/cloudtail_utils.py

Index: scripts/slave/recipe_modules/goma/resources/cloudtail_utils.py
diff --git a/scripts/slave/recipe_modules/goma/resources/cloudtail_utils.py b/scripts/slave/recipe_modules/goma/resources/cloudtail_utils.py
index ea3c619976c857f27e66c2cefcae7b6e454e78dc..2f22dd39295b423bb3c08be7185d9bc24e23f6ce 100644
--- a/scripts/slave/recipe_modules/goma/resources/cloudtail_utils.py
+++ b/scripts/slave/recipe_modules/goma/resources/cloudtail_utils.py
@@ -20,13 +20,9 @@ def start_cloudtail(args):
                            'tail',
                            '--log-id', 'goma_compiler_proxy',
                            '--path',
-                           goma_utils.GetLatestGomaCompilerProxyInfo()],
-                          stdout=open(os.devnull, 'w'),
-                          stderr=open(os.devnull, 'w'),
-                          close_fds=True)
-
-  sys.stdout.write(str(proc.pid))
-
+                           goma_utils.GetLatestGomaCompilerProxyInfo()])
+  with open(args.pid_file, 'w') as f:
+    f.write(str(proc.pid))
 
 def main():
   parser = argparse.ArgumentParser(
@@ -39,6 +35,8 @@ def main():
   parser_start.set_defaults(command='start')
   parser_start.add_argument('--cloudtail-path', required=True,
                             help='path of cloudtail binary')
+  parser_start.add_argument('--pid-file', required=True,
+                            help='file written pid')
 
   parser_stop = subparsers.add_parser('stop',
                                       help='subcommand to stop cloudtail')