old_contents: #!/usr/bin/python
  # Copyright (c) 2011 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.
  
  """Shim to run nacl toolchain download script only if there is a nacl dir."""
  
  import os
  import sys
  
  
  def Main(args):
    # Handle chromeos=1 specially (until its building its own toolchain).
    if 'chromeos=1' in os.environ.get('GYP_DEFINES', ''):
      args = [
        '--nacl-newlib-only',
        '--file-hash', 'linux_x86_newlib',
             '8337d5ec327d857a49b500723ec9b792f4973abc',
        '--base-url', ('https://commondatastorage.googleapis.com/'
                       'nativeclient-archive2/special_chromeos'),
        '--x86-version', '6561',
      ]
    script_dir = os.path.dirname(os.path.abspath(__file__))
    src_dir = os.path.dirname(script_dir)
    nacl_dir = os.path.join(src_dir, 'native_client')
    nacl_build_dir = os.path.join(nacl_dir, 'build')
    download_script = os.path.join(nacl_build_dir, 'download_toolchains.py')
    if not os.path.exists(download_script):
      print "Can't find '%s'" % download_script
      print 'Presumably you are intentionally building without NativeClient.'
      print 'Skipping NativeClient toolchain download.'
      sys.exit(0)
    sys.path.insert(0, nacl_build_dir)
    import download_toolchains
    download_toolchains.Main(args)
  
  
  if __name__ == '__main__':
    Main(sys.argv[1:])
  
new_contents: #!/usr/bin/python
  # Copyright (c) 2011 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.
  
  """Shim to run nacl toolchain download script only if there is a nacl dir."""
  
  import os
  import sys
  
  
  def Main(args):
    # Handle chromeos=1 specially (until its building its own toolchain).
    if 'chromeos=1' in os.environ.get('GYP_DEFINES', ''):
      args = [
        '--nacl-newlib-only',
        '--file-hash', 'linux_x86_newlib',
             '8337d5ec327d857a49b500723ec9b792f4973abc',
        '--base-url', ('https://commondatastorage.googleapis.com/'
                       'nativeclient-archive2/special_chromeos'),
        '--x86-version', '6561',
      ]
      print 'NOTE: Special handling for chromeos'
      print 'Running with these argument instead:'
      print args
    script_dir = os.path.dirname(os.path.abspath(__file__))
    src_dir = os.path.dirname(script_dir)
    nacl_dir = os.path.join(src_dir, 'native_client')
    nacl_build_dir = os.path.join(nacl_dir, 'build')
    download_script = os.path.join(nacl_build_dir, 'download_toolchains.py')
    if not os.path.exists(download_script):
      print "Can't find '%s'" % download_script
      print 'Presumably you are intentionally building without NativeClient.'
      print 'Skipping NativeClient toolchain download.'
      sys.exit(0)
    sys.path.insert(0, nacl_build_dir)
    import download_toolchains
    download_toolchains.Main(args)
  
  
  if __name__ == '__main__':
    Main(sys.argv[1:])
  
subject: Make chromeos toolchain download more noisy, so its clear which version we're using.