Add --no-commit option to apply_issue for use with git on the bots.

apply_issue.py

Index: apply_issue.py
diff --git a/apply_issue.py b/apply_issue.py
index 30748fd7564314c2357525e63e6c9fd0034a3107..76ade332875c150d8a0f8a6b46f7c28fd646f2bd 100755
--- a/apply_issue.py
+++ b/apply_issue.py
@@ -65,6 +65,8 @@ def main():
       '--server',
       default='http://codereview.chromium.org',
       help='Rietveld server')
+  parser.add_option('--no-commit', action='store_true',
+      help='Do not try to commit patch to SCM (git only)')
   options, args = parser.parse_args()
   logging.basicConfig(
       format='%(levelname)5s %(module)11s(%(lineno)4d): %(message)s',
@@ -137,12 +139,12 @@ def main():
     print(patch)
   full_dir = os.path.abspath(options.root_dir)
   scm_type = scm.determine_scm(full_dir)
-  if scm_type == 'svn':
+  if options.no_commit or scm_type is None:
+    scm_obj = checkout.RawCheckout(full_dir, None, None)
+  elif scm_type == 'svn':
     scm_obj = checkout.SvnCheckout(full_dir, None, None, None, None)
   elif scm_type == 'git':
     scm_obj = checkout.GitCheckoutBase(full_dir, None, None)
-  elif scm_type == None:
-    scm_obj = checkout.RawCheckout(full_dir, None, None)
   else:
     parser.error('Couldn\'t determine the scm')