cc: add git cl format presubmit warning

BUG=none

Review URL: https://codereview.chromium.org/100173010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247888 0039d316-1c4b-4281-b951-d872f2087c98

cc/PRESUBMIT.py

@@ -221,6 +221,7 @@ def CheckChangeOnUpload(input_api, output_api):
   results += CheckChangeLintsClean(input_api, output_api)
   results += CheckTodos(input_api, output_api)
   results += CheckNamespace(input_api, output_api)
+  results += input_api.canned_checks.CheckPatchFormatted(input_api, output_api)
   return results
 
 def GetPreferredTrySlaves(project, change):