Add DownloadHooks as a no-op function to git_cl to unblock android bisectors.

git_cl.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Copyright (C) 2008 Evan Martin <martine@danga.com>
 
 """A git-command for integrating reviews on Rietveld and Gerrit."""
 
 from distutils.version import LooseVersion
@@ skipping 2110 matching lines @@
   with open(destination, 'w') as f:
     f.write(urllib2.urlopen(source).read())
 
 
 def hasSheBang(fname):
   """Checks fname is a #! script."""
   with open(fname) as f:
     return f.read(2).startswith('#!')
 
 
+# TODO(bpastene) Remove once a cleaner fix to crbug.com/600473 presents itself.
+def DownloadHooks(*args, **kwargs):
+  pass
+
+
 def DownloadGerritHook(force):
   """Download and install Gerrit commit-msg hook.
 
   Args:
     force: True to update hooks. False to install hooks if not present.
   """
   if not settings.GetIsGerrit():
     return
   src = 'https://gerrit-review.googlesource.com/tools/hooks/commit-msg'
   dst = os.path.join(settings.GetRoot(), '.git', 'hooks', 'commit-msg')
@@ skipping 2474 matching lines @@
 if __name__ == '__main__':
   # These affect sys.stdout so do it outside of main() to simplify mocks in
   # unit testing.
   fix_encoding.fix_encoding()
   setup_color.init()
   try:
     sys.exit(main(sys.argv[1:]))
   except KeyboardInterrupt:
     sys.stderr.write('interrupted\n')
     sys.exit(1)