git cl refactor: s/should_git_number/should_add_git_number

R=sergiyb@google.com
BUG=chromium:642493

Change-Id: Id7b732d82c25ce88a3295ff54c79cf2a66e0d5b9
Reviewed-on: https://chromium-review.googlesource.com/419437
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Andrii Shyshkalov <tandrii@chromium.org>
diff --git a/git_cl.py b/git_cl.py
index 46af2bc..c13d6a6 100755
--- a/git_cl.py
+++ b/git_cl.py
@@ -1160,7 +1160,7 @@
     return self._pending_prefix
 
   @property
-  def should_git_number(self):
+  def should_add_git_number(self):
     return self._validator_enabled and self._pending_prefix is None
 
 
@@ -4658,7 +4658,7 @@
 
       pending_prefix = git_numberer.pending_prefix
 
-      if git_numberer.should_git_number:
+      if git_numberer.should_add_git_number:
         # TODO(tandrii): run git fetch in a loop + autorebase when there there
         # is no pending ref to push to?
         logging.debug('Adding git number footers')