Fix install script to deal with unzip for Windows.

tools/testing/webdriver_test_setup.py

 #!/usr/bin/python
 
 # Copyright (c) 2011, 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 
 # 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 optparse
 import os
 import platform
 import re
 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, 
       stdin=subprocess.PIPE, shell=True)
-  output, not_used = p.communicate(input=stdin)
+  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='Install Firefox',
       action='store_true', default=False)
   parser.add_option('--path', '-p', dest='path', help='Specify location ' + \
       'on your PATH for where we should install chromedriver (default is in' + \
       'depot_tools).', metavar='CHROMEDRIVER_LOC', type='str', action='store',
       default=None)
   parser.add_option('--buildbot', '-b', dest='buildbot', action='store_true',
@@ skipping 80 matching lines @@
 
   def run(self):
     """Download and install the Google Code."""
     print 'Installing from %s' % self.project_name
     os_str = self.get_os_str
     version = self.find_latest_version()
     download_name = self.download_name_func({'os': os_str, 'version': version})
     urllib.urlretrieve(self.google_code_download() + '/' + download_name,
         os.path.join(self.download_location, download_name))
     if download_name.endswith('.zip'):
-      run_cmd('unzip -u %s -d %s' % (os.path.join(self.download_location,
-          download_name), self.download_location))
+      z = zipfile.ZipFile(os.path.join(self.download_location, download_name))
+      z.extractall(self.download_location)
+      z.close()
       os.remove(os.path.join(self.download_location, download_name))
 
   @property
   def get_os_str(self):
     """The strings to indicate what OS a download is for as used on Google Code.
     """
     os_str = 'win'
     if 'darwin' in sys.platform:
       os_str = 'mac'
     elif 'linux' in sys.platform:
@@ skipping 95 matching lines @@
       lambda x: 'chromedriver_%(os)s_%(version)s.zip' % x).run()
   if 'win32' not in sys.platform and 'cygwin' not in sys.platform:
     GoogleCodeInstaller('selenium', os.path.dirname(os.path.abspath(__file__)),
         lambda x: 'selenium-server-standalone-%(version)s.jar' % x).run()
 
   if args.firefox:
     FirefoxInstaller().run()
 
 if __name__ == '__main__':
   main()