Change all relative imports in webkitpy to absolute imports.

third_party/WebKit/Tools/Scripts/webkitpy/common/find_files_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 11 matching lines @@
 # 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 sys
 import unittest
 
+from webkitpy.common import find_files
 from webkitpy.common.system.filesystem import FileSystem
-import find_files
 
 
 class MockWinFileSystem(object):
 
     def join(self, *paths):
         return '\\'.join(paths)
 
     def normpath(self, path):
         return path.replace('/', '\\')
 
@@ skipping 10 matching lines @@
         # what we think Windows is supposed to do. This test will run on all
         # platforms.
         self.assert_filesystem_normalizes(MockWinFileSystem())
 
     def test_win(self):
         # This tests the actual windows platform, to ensure we get the same
         # results that we get in test_mocked_win().
         if sys.platform != 'win32':
             return
         self.assert_filesystem_normalizes(FileSystem())