Send an IM when gcl commit <change> --no_presubmit is used

R=cmp@chromium.org
BUG=25940
TEST=


Review URL: http://codereview.chromium.org/9211013

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@117851 0039d316-1c4b-4281-b951-d872f2087c98

gcl.py

 #!/usr/bin/env python
-# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# 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.
 
@@ -755,6 +755,10 @@ def GenerateDiff(files):
 
 def OptionallyDoPresubmitChecks(change_info, committing, args):
   if FilterFlag(args, "--no_presubmit") or FilterFlag(args, "--force"):
+    breakpad.SendStack(
+        'GclHooksBypassedCommit',
+        'Issue %s/%s bypassed hook when committing' %
+        (change_info.rietveld, change_info.issue))
     return presubmit_support.PresubmitOutput()
   return DoPresubmitChecks(change_info, committing, True)