Add git-reup and friends

git_freezer.py

 #!/usr/local/bin/python
+# Copyright 2014 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.
+
 import sys
 import re
 import optparse
 
 import subcommand
 import subprocess2
 
-from git_common import run, stream
+from git_common import run, run_stream
 
 FREEZE = 'FREEZE'
 SECTIONS = {
   'indexed': 'soft',
   'unindexed': 'mixed'
 }
 MATCHER = re.compile(r'%s.(%s)' % (FREEZE, '|'.join(SECTIONS)))
 
 
 def freeze():
@@ skipping 11 matching lines @@
     took_action = True
   except subprocess2.CalledProcessError:
     pass
 
   if not took_action:
     return 'Nothing to freeze.'
 
 
 def thaw():
   took_action = False
-  for sha in (s.strip() for s in stream('rev-list', 'HEAD').xreadlines()):
+  for sha in (s.strip() for s in run_stream('rev-list', 'HEAD').xreadlines()):
     msg = run('show', '--format=%f%b', '-s', 'HEAD')
     match = MATCHER.match(msg)
     if not match:
       if not took_action:
         return 'Nothing to thaw.'
       break
 
     run('reset', '--' + SECTIONS[match.group(1)], sha)
     took_action = True
 
@@ skipping 12 matching lines @@
 
 def main():  # pragma: no cover
   dispatcher = subcommand.CommandDispatcher(__name__)
   ret = dispatcher.execute(optparse.OptionParser(), sys.argv[1:])
   if ret:
     print ret
 
 
 if __name__ == '__main__':  # pragma: no cover
   main()