Use underscores to separate words in filenames in webkitpy.

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

 # Copyright (C) 2010 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 mimetypes
 import urllib2
 
-from webkitpy.common.net.networktransaction import NetworkTransaction
+from webkitpy.common.net.network_transaction import NetworkTransaction
 
 
 def get_mime_type(filename):
     return mimetypes.guess_type(filename)[0] or 'application/octet-stream'
 
 
 # FIXME: Rather than taking tuples, this function should take more structured data.
 def _encode_multipart_form_data(fields, files):
     """Encode form fields for multipart/form-data.
 
@@ skipping 55 matching lines @@
 
     def _upload_data(self, content_type, data):
         def callback():
             # FIXME: Setting a timeout, either globally using socket.setdefaulttimeout()
             # or in urlopen(), doesn't appear to work on Mac 10.5 with Python 2.7.
             # For now we will ignore the timeout value and hope for the best.
             request = urllib2.Request(self._url, data, {"Content-Type": content_type})
             return urllib2.urlopen(request)
 
         return NetworkTransaction(timeout_seconds=self._timeout_seconds).run(callback)