Gerrit git cl upload -f should not ask for title.

R=sergiyb@chromium.org
BUG=697625

Change-Id: I2c3ad4e9380bd667c149be09eabeb5af0a5ab020
Reviewed-on: https://chromium-review.googlesource.com/472749
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Andrii Shyshkalov <tandrii@chromium.org>

git_cl.py

@@ -2828,8 +2828,11 @@ class _GerritChangelistImpl(_ChangelistCodereviewBase):
               '%s' % (self.GetIssue(), self.GetIssueURL()))
         if not title:
           default_title = RunGit(['show', '-s', '--format=%s', 'HEAD']).strip()
-          title = ask_for_data(
-              'Title for patchset [%s]: ' % default_title) or default_title
+          if options.force:
+            title = default_title
+          else:
+            title = ask_for_data(
+                'Title for patchset [%s]: ' % default_title) or default_title
           if title == default_title:
             automatic_title = True
         change_id = self._GetChangeDetail()['change_id']