Instrumented libraries: Remove dependence on GYP_DEFINES

third_party/instrumented_libraries/scripts/unpack_binaries.py

 #!/usr/bin/env python
 # Copyright 2015 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.
 
-"""Unpacks pre-built sanitizer-instrumented third-party libraries."""
+"""Unpacks pre-built sanitizer-instrumented third-party libraries.
+This script should only be run by gn.
+"""
 
 import os
 import subprocess
 import shutil
 import sys
 
-import download_binaries
 
-
-def get_archive_name(archive_prefix):
-  return '%s-%s.tgz' % (archive_prefix, download_binaries.get_ubuntu_release())
-
-
-def main(archive_prefix, archive_dir, target_dir, stamp_dir=None):
+def main(archive, stamp_file, target_dir):
   shutil.rmtree(target_dir, ignore_errors=True)
 
   os.mkdir(target_dir)
   subprocess.check_call([
       'tar',
       '-zxf',
-      os.path.join(archive_dir, get_archive_name(archive_prefix)),
+      archive,
       '-C',
       target_dir])
-  stamp_file = os.path.join(stamp_dir or target_dir, '%s.txt' % archive_prefix)
   open(stamp_file, 'w').close()
-
-  if stamp_dir:
-    with open(os.path.join(stamp_dir, '%s.d' % archive_prefix), 'w') as f:
-      f.write('%s: %s' % (
-          stamp_file, os.path.join(archive_dir,
-                                   get_archive_name(archive_prefix))))
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(*sys.argv[1:]))