Add ability to CQ dry run patchsets during "git cl upload"

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."""
 
 from distutils.version import LooseVersion
@@ skipping 1922 matching lines @@
     remote, remote_branch = cl.GetRemoteBranch()
     target_ref = GetTargetRef(remote, remote_branch, options.target_branch,
                               settings.GetPendingRefPrefix())
     if target_ref:
       upload_args.extend(['--target_ref', target_ref])
 
   project = settings.GetProject()
   if project:
     upload_args.extend(['--project', project])
 
+  if options.cq_dry_run:
+    upload_args.extend(['--cq_dry_run'])
+
   try:
     upload_args = ['upload'] + upload_args + args
     logging.info('upload.RealMain(%s)', upload_args)
     issue, patchset = upload.RealMain(upload_args)
     issue = int(issue)
     patchset = int(patchset)
   except KeyboardInterrupt:
     sys.exit(1)
   except:
     # If we got an exception after the user typed a description for their
@@ skipping 60 matching lines @@
                     '--target-branch',
                     metavar='TARGET',
                     help='Apply CL to remote ref TARGET.  ' +
                          'Default: remote branch head, or master')
   parser.add_option('--squash', action='store_true',
                     help='Squash multiple commits into one (Gerrit only)')
   parser.add_option('--email', default=None,
                     help='email address to use to connect to Rietveld')
   parser.add_option('--tbr-owners', dest='tbr_owners', action='store_true',
                     help='add a set of OWNERS to TBR')
+  parser.add_option('--cq-dry-run', dest='cq_dry_run', action='store_true',
+                    help='Send the patchset to do a CQ dry run right after '
+                         'upload.')
 
   add_git_similarity(parser)
   (options, args) = parser.parse_args(args)
 
   if is_dirty_git_tree('upload'):
     return 1
 
   options.reviewers = cleanup_list(options.reviewers)
   options.cc = cleanup_list(options.cc)
 
@@ skipping 1101 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()
   colorama.init()
   try:
     sys.exit(main(sys.argv[1:]))
   except KeyboardInterrupt:
     sys.stderr.write('interrupted\n')
     sys.exit(1)