Gerrit git cl land: abort if not uploaded.

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 __future__ import print_function
@@ skipping 3991 matching lines @@
       # Besides, Gerrit has the ability to change the commit message on submit
       # automatically, thus there is no need to support this option (so far?).
       parser.error('-m MESSAGE option is not supported for Gerrit.')
     if options.contributor:
       parser.error(
           '-c CONTRIBUTOR option is not supported for Gerrit.\n'
           'Before uploading a commit to Gerrit, ensure it\'s author field is '
           'the contributor\'s "name <email>". If you can\'t upload such a '
           'commit for review, contact your repository admin and request'
           '"Forge-Author" permission.')
+    if not cl.GetIssue():
+      DieWithError('You must upload the issue first to Gerrit.\n'
+                   '  If you would rather have `git cl land` upload '
+                   'automatically for you, see http://crbug.com/642759')
     return cl._codereview_impl.CMDLand(options.force, options.bypass_hooks,
                                        options.verbose)
 
   current = cl.GetBranch()
   remote, upstream_branch = cl.FetchUpstreamTuple(cl.GetBranch())
   if not settings.GetIsGitSvn() and remote == '.':
     print()
     print('Attempting to push branch %r into another local branch!' % current)
     print()
     print('Either reparent this branch on top of origin/master:')
@@ skipping 1248 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)