chromite_wrapper: Support git submodule checkouts.

support/chromite_wrapper

 #!/usr/bin/env python
 # Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Wrapper for chromite tools.
 
 The script is intend to be symlinked to any number of chromite tools, attempts
 to find the path for chromite, and hands off to the right tool via exec if
 possible.
@@ skipping 12 matching lines @@
 import os
 import sys
 
 # Due to historical reasons, and the fact depot_tools ToT is used by older
 # factory branches (lacking chromite script cleanups), note we have to
 # fallback to some odd import locations.  This is the only reason for the
 # fallback code- any/all new scripts symlinked to this script *must* exist
 # in chromite/bin/ .
 
 def _FindChromite(path):
   """Find the chromite dir in a repo or gclient checkout."""

[cmp_google, 2013/05/03 21:45:51]

Update the heredoc so it's correct.

   path = os.path.abspath(path)
   # Depending on the checkout type (whether repo chromeos or gclient chrome)
   # Chromite lives in a different location.
   roots = (
     ('.repo', 'chromite/.git'),
     ('.gclient', 'src/third_party/chromite/.git'),
+    ('src/.gitmodules', 'src/third_party/chromite/.git'),
   )
 
   while path != '/':
     for root, chromite_git_dir in roots:
       if all(os.path.exists(os.path.join(path, x))
              for x in [root, chromite_git_dir]):
         return os.path.dirname(os.path.join(path, chromite_git_dir))
     path = os.path.dirname(path)
   return None
 
@@ skipping 36 matching lines @@
   sys.path.insert(0, os.path.dirname(chromite_dir))
 
   try:
     module = __import__(target, fromlist=['main'])
   except ImportError:
     return _MissingErrorOut(target)
   return module.main()
 
 if __name__ == '__main__':
   sys.exit(main())