Added command-line way to close issues.

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."""
 
 import json
@@ skipping 1779 matching lines @@
 def CMDset_commit(parser, args):
   """set the commit bit"""
   _, args = parser.parse_args(args)
   if args:
     parser.error('Unrecognized args: %s' % ' '.join(args))
   cl = Changelist()
   cl.SetFlag('commit', '1')
   return 0
 
 
+def CMDset_close(parser, args):
+  """close the issue"""
+  _, args = parser.parse_args(args)
+  if args:
+    parser.error('Unrecognized args: %s' % ' '.join(args))
+  cl = Changelist()
+  # Ensure there actually is an issue to close.
+  cl.GetDescription()
+  cl.CloseIssue()
+  return 0
+
+
 def Command(name):
   return getattr(sys.modules[__name__], 'CMD' + name, None)
 
 
 def CMDhelp(parser, args):
   """print list of commands or help for a specific command"""
   _, args = parser.parse_args(args)
   if len(args) == 1:
     return main(args + ['--help'])
   parser.print_help()
@@ skipping 61 matching lines @@
              'and retry or visit go/isgaeup.\n%s') % (e.code, str(e)))
 
   # Not a known command. Default to help.
   GenUsage(parser, 'help')
   return CMDhelp(parser, argv)
 
 
 if __name__ == '__main__':
   fix_encoding.fix_encoding()
   sys.exit(main(sys.argv[1:]))