add changes to presubmit needed for OWNERS support

presubmit_support.py

 #!/usr/bin/python
 # Copyright (c) 2010 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Enables directory-specific presubmit checks to run at upload and/or commit.
 """
 
 __version__ = '1.3.5'
 
@@ skipping 136 matching lines @@
     def IsFatal(self):
       """An error that is fatal stops g4 mail/submit immediately, i.e. before
       other presubmit scripts are run.
       """
       return False
 
     def ShouldPrompt(self):
       """Whether this presubmit result should result in a prompt warning."""
       return False
 
+  class PresubmitAddText(PresubmitResult):
+    """Propagates a line of text back to the caller."""
+    def __init__(self, message, items=None, long_text=''):
+      super(OutputApi.PresubmitAddText, self).__init__("ADD: " + message,
+          items, long_text)
+
   class PresubmitError(PresubmitResult):
     """A hard presubmit error."""
     def IsFatal(self):
       return True
 
   class PresubmitPromptWarning(PresubmitResult):
     """An warning that prompts the user if they want to continue."""
     def ShouldPrompt(self):
       return True
 
@@ skipping 1001 matching lines @@
                                options.commit,
                                options.verbose,
                                sys.stdout,
                                sys.stdin,
                                options.default_presubmit,
                                options.may_prompt)
 
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))