Use underscores to separate words in filenames in webkitpy.

third_party/WebKit/Tools/Scripts/webkitpy/common/host.py

 # Copyright (c) 2010 Google Inc. All rights reserved.
 # Copyright (c) 2009 Apple 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
@@ skipping 16 matching lines @@
 # (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 logging
 import sys
 
 from webkitpy.common.checkout.scm.detection import SCMDetector
 from webkitpy.common.config.builders import BUILDERS
 from webkitpy.common.net.buildbot import BuildBot
 from webkitpy.common.net import web
-from webkitpy.common.system.systemhost import SystemHost
+from webkitpy.common.system.system_host import SystemHost
 from webkitpy.layout_tests.builder_list import BuilderList
 from webkitpy.layout_tests.port.factory import PortFactory
 
 
 _log = logging.getLogger(__name__)
 
 
 class Host(SystemHost):
 
     def __init__(self):
@@ skipping 63 matching lines @@
 
     def scm(self):
         return self._scm
 
     def scm_for_path(self, path):
         # FIXME: make scm() be a wrapper around this, and clean up the way
         # callers call initialize_scm() (to remove patch_directories) and scm().
         if sys.platform == "win32":
             self._engage_awesome_windows_hacks()
         return SCMDetector(self.filesystem, self.executive).detect_scm_system(path)