Change all relative imports in webkitpy to absolute imports.

third_party/WebKit/Tools/Scripts/webkitpy/style/checkers/python_unittest.py

 # Copyright (C) 2010 Chris Jerdonek (cjerdonek@webkit.org)
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 # 1.  Redistributions of source code must retain the above copyright
 #     notice, this list of conditions and the following disclaimer.
 # 2.  Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in the
 #     documentation and/or other materials provided with the distribution.
 #
 # THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 # DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS 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.
 
 """Unit tests for python.py."""
 
 import os
 import unittest
 
-from python import PythonChecker
+from webkitpy.style.checkers.python import PythonChecker
 
 
 class PythonCheckerTest(unittest.TestCase):
 
     """Tests the PythonChecker class."""
 
     def test_init(self):
         """Test __init__() method."""
 
         def _mock_handle_style_error(self):
@@ skipping 22 matching lines @@
         self.assertEqual(
             [
                 (2, 'pep8/W291', 5, 'trailing whitespace'),
                 (3, 'pep8/E261', 5, 'at least two spaces before inline comment'),
                 (3, 'pep8/E262', 5, "inline comment should start with '# '"),
                 (2, 'pylint/C0303(trailing-whitespace)', 5, '[] Trailing whitespace'),
                 (2, 'pylint/E0602(undefined-variable)', 5, u"[] Undefined variable 'error'"),
                 (3, 'pylint/W0611(unused-import)', 5, '[] Unused import math'),
             ],
             errors)