Check in the thirdparty libs needed for webkitpy.

Tools/Scripts/webkitpy/common/checkout/baselineoptimizer_unittest.py

 # Copyright (C) 2011 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #    * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #    * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 10 matching lines @@
 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import hashlib
 import sys
-import unittest2 as unittest
+from webkitpy.thirdparty import unittest2 as unittest
 
 from webkitpy.common.checkout.baselineoptimizer import BaselineOptimizer
 from webkitpy.common.system.filesystem_mock import MockFileSystem
 from webkitpy.common.host_mock import MockHost
 
 
 class TestBaselineOptimizer(BaselineOptimizer):
     def __init__(self, mock_results_by_directory, create_mock_files, baseline_name):
         host = MockHost()
         BaselineOptimizer.__init__(self, host, host.port_factory.all_port_names())
@@ skipping 192 matching lines @@
         }, expected_result, baseline_name, create_mock_files=True)
 
     def test_virtual_root_not_redundant_with_ancestors(self):
         baseline_name = self.VIRTUAL_DIRECTORY + '/mock-baseline.png'
         hash_of_two = hashlib.sha1('2').hexdigest()
         expected_result = [{'LayoutTests/virtual/softwarecompositing': hash_of_two}, {'LayoutTests/platform/mac': hash_of_two}]
         self._assertOneLevelOptimization({
             'LayoutTests/' + self.VIRTUAL_DIRECTORY: '2',
             'LayoutTests/platform/mac': '2',
         }, expected_result, baseline_name, create_mock_files=True)