Use underscores to separate words in filenames in webkitpy.

third_party/WebKit/Tools/Scripts/webkitpy/common/system/user_unittest.py

 # Copyright (C) 2010 Research in Motion Ltd. 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 unittest
 
-from webkitpy.common.system.outputcapture import OutputCapture
+from webkitpy.common.system.output_capture import OutputCapture
 from webkitpy.common.system.user import User
 
 
 class UserTest(unittest.TestCase):
 
     example_user_response = "example user response"
 
     def test_prompt_repeat(self):
         self.repeatsRemaining = 2
 
@@ skipping 81 matching lines @@
         for test_case in test_cases:
             expected, inputs = test_case
 
             def mock_raw_input(message):
                 self.assertEqual(expected[0], message)
                 return inputs[1]
 
             result = User().confirm(default=inputs[0],
                                     raw_input=mock_raw_input)
             self.assertEqual(expected[1], result)