Allow force revert for git users as well.

tools/revert.py

 #!/usr/bin/python
 
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 import optparse
 import os
 import platform
 import subprocess
@@ skipping 159 matching lines @@
           command_sequence += 'git revert -n %s\n' % git_commit_id
         maybe_fail('There are conflicts while reverting. Please resolve these '
                    'after manually running:\n' + command_sequence + 'and then '
                    'create a CL and submit to complete the revert.')
     run_cmd(['git', 'commit', '-m', commit_msg])
 
 def main():
   revisions = parse_args()
   git_user = runs_git()
   if has_new_code(git_user):
-    if git_user:
-      maybe_fail('Your tree has local modifications! Move to a clean tree and '
-          'try running this script again.')
-    else:
-      maybe_fail('WARNING: This checkout has local modifications!! This could '
-           'result in a CL that is not just a revert and/or you could lose your'
-           ' local changes! Are you **SURE** you want to continue? ',
-         user_input=True)
+    maybe_fail('WARNING: This checkout has local modifications!! This could '
+         'result in a CL that is not just a revert and/or you could lose your'
+         ' local changes! Are you **SURE** you want to continue? ',
+       user_input=True)
   if git_user:
     run_cmd(['git', 'cl', 'rebase'])
   run_cmd(['gclient', 'sync'])
   revert(revisions[0], revisions[1], git_user)
   print ('Now, create a CL and submit! The buildbots and your teammates thank '
          'you!')
 
 if __name__ == '__main__':
   main()