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

native_client_sdk/src/build_tools/tests/verify_ppapi_test.py

 #!/usr/bin/env python
 # Copyright (c) 2013 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 sys
 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)
 import mock
 
 sys.path.append(BUILD_TOOLS_DIR)
 import verify_ppapi
 
 
 class TestPartition(unittest.TestCase):
@@ skipping 160 matching lines @@
       ]
       result = verify_ppapi.VerifyOrPrintError(
           dsc_filename, dsc_sources_and_headers, changed_filenames,
           removed_filenames, is_private=True)
       self.assertFalse(result)
       self.assertTrue(sys_stderr.write.called)
 
 
 if __name__ == '__main__':
   unittest.main()