Remove some whitespace from the webdriver setup script.

tools/testing/webdriver_test_setup.py

 #!/usr/bin/python
 
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # Run to install the necessary components to run webdriver on the buildbots or
-# on your local machine. 
-# Note: The setup steps can be done fairly easily by hand. This script is 
+# on your local machine.
+# Note: The setup steps can be done fairly easily by hand. This script is
 # intended to simply and reduce the time for setup since there are a fair number
 # of steps.
- 
+
 # TODO(efortuna): Rewrite this script in Dart when the Process module has a
 # better high level API.
 import HTMLParser
 import optparse
 import os
 import platform
 import re
 import shutil
 import string
 import subprocess
 import sys
 import urllib
 import urllib2
 import zipfile
 
 def run_cmd(cmd, stdin=None):
   """Run the command on the command line in the shell. We print the output of
   the command.
   """
   print cmd
-  p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, 
+  p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
       stdin=subprocess.PIPE, shell=True)
   output, stderr = p.communicate(input=stdin)
   if output:
     print output
   if stderr:
     print stderr
 
 def parse_args():
   parser = optparse.OptionParser()
   parser.add_option('--firefox', '-f', dest='firefox',
       help="Don't install Firefox", action='store_true', default=False)
   parser.add_option('--opera', '-o', dest='opera', default=False,
       help="Don't install Opera", action='store_true')
   parser.add_option('--chromedriver', '-c', dest='chromedriver',
       help="Don't install chromedriver.", action='store_true', default=False)
   parser.add_option('--iedriver', '-i', dest='iedriver',
       help="Don't install iedriver (only used on Windows).",
       action='store_true', default=False)
-  parser.add_option('--seleniumrc', '-s', dest='seleniumrc', 
+  parser.add_option('--seleniumrc', '-s', dest='seleniumrc',
       help="Don't install the Selenium RC server (used for Safari and Opera "
            "tests).", action='store_true', default=False)
   parser.add_option('--python', '-p', dest='python',
       help="Don't install Selenium python bindings.", action='store_true',
       default=False)
   parser.add_option('--buildbot', '-b', dest='buildbot', action='store_true',
       help='Perform a buildbot selenium setup (buildbots have a different' +
       'location for their python executable).', default=False)
   args, _ = parser.parse_args()
   return args
@@ skipping 39 matching lines @@
 
   def google_code_downloads_page(self):
     return 'http://code.google.com/p/%s/downloads/list' % self.project_name
 
   def google_code_download(self):
     return 'http://%s.googlecode.com/files/' % self.project_name
 
   def find_latest_version(self):
     """Find the latest version number of some code available for download on a
     Google code page. This was unfortunately done in an ad hoc manner because
-    Google Code does not seem to have an API for their list of current 
+    Google Code does not seem to have an API for their list of current
     downloads(!).
     """
     google_code_site = self.google_code_downloads_page()
     f = urllib2.urlopen(google_code_site)
     latest = ''
     for line in f.readlines():
       if re.search(self.download_regex_str, line):
         suffix_index = line.find(
             self.download_regex_str[self.download_regex_str.rfind('.'):])
         name_end = self.download_regex_str.rfind('.+')
@@ skipping 276 matching lines @@
   if not args.iedriver and platform.system() == 'Windows':
     GoogleCodeInstaller('selenium', find_depot_tools_location(args.buildbot),
         lambda x: 'IEDriverServer_Win32_%(version)s.zip' % x).run()
   if not args.firefox:
     FirefoxInstaller().run()
   if not args.opera:
     OperaInstaller().run()
 
 if __name__ == '__main__':
   main()