Use underscores to separate words in filenames in webkitpy.

third_party/WebKit/Tools/Scripts/webkitpy/common/net/buildbot.py

 # Copyright (c) 2009, 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 13 matching lines @@
 # 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 collections
 import re
 import urllib2
 
 from webkitpy.common.memoized import memoized
-from webkitpy.common.net.layouttestresults import LayoutTestResults
-from webkitpy.common.net.networktransaction import NetworkTransaction
+from webkitpy.common.net.layout_test_results import LayoutTestResults
+from webkitpy.common.net.network_transaction import NetworkTransaction
 
 
 RESULTS_URL_BASE = 'https://storage.googleapis.com/chromium-layout-test-archives'
 
 
 class Build(collections.namedtuple('Build', ('builder_name', 'build_number'))):
     """Represents a combination of builder and build number.
 
     If build number is None, this represents the latest build
     for a given builder.
@@ skipping 67 matching lines @@
 
     def _fetch_file(self, url_base, file_name):
         # It seems this can return None if the url redirects and then returns 404.
         # FIXME: This could use Web instead of using urllib2 directly.
         result = urllib2.urlopen("%s/%s" % (url_base, file_name))
         if not result:
             return None
         # urlopen returns a file-like object which sometimes works fine with str()
         # but sometimes is a addinfourl object.  In either case calling read() is correct.
         return result.read()