Have git_cache print out download progress when bootstrapping the git cache

git_cache.py

 #!/usr/bin/env python
 # Copyright 2014 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.
 
 """A git command for managing a local cache of git repositories."""
 
 from __future__ import print_function
 import errno
 import logging
@@ skipping 247 matching lines @@
     ls_out_sorted = sorted(ls_out.splitlines())
     if not ls_out_sorted:
       # This repo is not on Google Storage.
       return False
     latest_checkout = ls_out_sorted[-1]
 
     # Download zip file to a temporary directory.
     try:
       tempdir = tempfile.mkdtemp()
       self.print('Downloading %s' % latest_checkout)
-      code, out, err = gsutil.check_call('cp', latest_checkout, tempdir)
+      code = gsutil.call('cp', latest_checkout, tempdir)
       if code:
-        self.print('%s\n%s' % (out, err))
         return False
       filename = os.path.join(tempdir, latest_checkout.split('/')[-1])
 
       # Unpack the file with 7z on Windows, unzip on linux, or fallback.
       if not python_fallback:
         if sys.platform.startswith('win'):
           cmd = ['7z', 'x', '-o%s' % directory, '-tzip', filename]
         else:
           cmd = ['unzip', filename, '-d', directory]
         retcode = subprocess.call(cmd)
@@ skipping 247 matching lines @@
     return options, args
 
 
 def main(argv):
   dispatcher = subcommand.CommandDispatcher(__name__)
   return dispatcher.execute(OptionParser(), argv)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))