Overhaul breakpad to optionally disable output. Add git-cl dcommit unit test.

gcl.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """\
 Wrapper script around Rietveld's upload.py that simplifies working with groups
 of files.
 """
 
@@ skipping 729 matching lines @@
 
 
 def GenerateDiff(files):
   return SVN.GenerateDiff(
       files, GetRepositoryRoot(), full_move=False, revision=None)
 
 
 def OptionallyDoPresubmitChecks(change_info, committing, args):
   if FilterFlag(args, "--no_presubmit") or FilterFlag(args, "--force"):
     breakpad.SendStack(
+        breakpad.DEFAULT_URL + '/breakpad',
         'GclHooksBypassedCommit',
         'Issue %s/%s bypassed hook when committing' %
-        (change_info.rietveld, change_info.issue))
+        (change_info.rietveld, change_info.issue),
+        verbose=False)
     return presubmit_support.PresubmitOutput()
   return DoPresubmitChecks(change_info, committing, True)
 
 
 def defer_attributes(a, b):
   """Copy attributes from an object (like a function) to another."""
   for x in dir(a):
     if not getattr(b, x, None):
       setattr(b, x, getattr(a, x))
 
@@ skipping 696 matching lines @@
       raise
     print >> sys.stderr, (
         'AppEngine is misbehaving and returned HTTP %d, again. Keep faith '
         'and retry or visit go/isgaeup.\n%s') % (e.code, str(e))
     return 1
 
 
 if __name__ == "__main__":
   fix_encoding.fix_encoding()
   sys.exit(main(sys.argv[1:]))