Pass arguments to pylint child process via a pipe.

third_party/pylint.py

 #!/usr/bin/env python
 # This program is free software; you can redistribute it and/or modify it under
 # the terms of the GNU General Public License as published by the Free Software
 # Foundation; either version 2 of the License, or (at your option) any later
 # version.
 #
 # This program is distributed in the hope that it will be useful, but WITHOUT
 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
 #
 # You should have received a copy of the GNU General Public License along with
 # this program; if not, write to the Free Software Foundation, Inc.,
 # 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 """ Copyright (c) 2002-2008 LOGILAB S.A. (Paris, FRANCE).
 http://www.logilab.fr/ -- mailto:contact@logilab.fr
+
+Copyright (c) 2012 The Chromium Authors. All rights reserved.
 """
 import sys
 from pylint import lint
-lint.Run(sys.argv[1:])
+
+args = sys.argv[1:]
+
+# Add support for a custom mode where arguments are fed line by line on
+# stdin. This allows us to get around command line length limitations.
+ARGS_ON_STDIN = '--args-on-stdin'
+if ARGS_ON_STDIN in args:
+  args = [arg for arg in args if arg != ARGS_ON_STDIN]
+  args.extend(arg.strip() for arg in sys.stdin)
+
+lint.Run(args)