[NaCl SDK] Convert python scripts from optparse to argparse.

native_client_sdk/src/build_tools/tests/build_artifacts_test.py

 #!/usr/bin/env python
 # Copyright (c) 2014 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.
 
 import os
 import ntpath
 import posixpath
 import sys
 import collections
 import unittest
 
 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
 BUILD_TOOLS_DIR = os.path.dirname(SCRIPT_DIR)
 CHROME_SRC = os.path.dirname(os.path.dirname(os.path.dirname(BUILD_TOOLS_DIR)))
-MOCK_DIR = os.path.join(CHROME_SRC, "third_party", "pymock")
+MOCK_DIR = os.path.join(CHROME_SRC, 'third_party', 'pymock')
 
 # For the mock library
 sys.path.append(MOCK_DIR)
 from mock import call, patch, Mock
 
 sys.path.append(BUILD_TOOLS_DIR)
 import build_artifacts
 
 
 class BasePosixTestCase(unittest.TestCase):
@@ skipping 273 matching lines @@
     archive = build_artifacts.Archive('foo')
     self.assertEqual(archive.name, 'win_foo')
     self.assertEqual(archive.archive_name, 'win_foo.tar.bz2')
     self.assertEqual(archive.archive_path, r'c:\archive_dir\win_foo.tar.bz2')
     self.assertEqual(archive.dirname, r'c:\archive_dir\win_foo')
     makedir_mock.assert_called_once_with(r'c:\archive_dir\win_foo')
 
 
 if __name__ == '__main__':
   unittest.main()