Use CheckCallAndFilterAndHeader for git commands.

gclient_scm.py

 # 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.
 
 """Gclient-specific SCM-specific operations."""
 
 import logging
 import os
 import posixpath
 import re
@@ skipping 944 matching lines @@
       # and if it does, then gclient may hide the prompt in the midst of a flood
       # of terminal spew.  The only indication that something has gone wrong
       # will be when gclient hangs unresponsively.  Instead, we disable the
       # password prompt and simply allow git to fail noisily.  The error
       # message produced by git will be copied to gclient's output.
       env = kwargs.get('env') or kwargs.setdefault('env', os.environ.copy())
       env.setdefault('GIT_ASKPASS', 'true')
       env.setdefault('SSH_ASKPASS', 'true')
     else:
       kwargs.setdefault('print_stdout', True)
-    stdout = kwargs.get('stdout', sys.stdout)
-    stdout.write('\n________ running \'git %s\' in \'%s\'\n' % (
-                 ' '.join(args), kwargs['cwd']))
-    return gclient_utils.CheckCallAndFilter(['git'] + args, **kwargs)
+    cmd = ['git'] + args
+    return gclient_utils.CheckCallAndFilterAndHeader(cmd, **kwargs)
 
 
 class SVNWrapper(SCMWrapper):
   """ Wrapper for SVN """
   name = 'svn'
 
   @staticmethod
   def BinaryExists():
     """Returns true if the command exists."""
     try:
@@ skipping 448 matching lines @@
       new_command.append('--force')
       if command[0] != 'checkout' and scm.SVN.AssertVersion('1.6')[0]:
         new_command.extend(('--accept', 'theirs-conflict'))
     elif options.manually_grab_svn_rev:
       new_command.append('--force')
       if command[0] != 'checkout' and scm.SVN.AssertVersion('1.6')[0]:
         new_command.extend(('--accept', 'postpone'))
     elif command[0] != 'checkout' and scm.SVN.AssertVersion('1.6')[0]:
       new_command.extend(('--accept', 'postpone'))
     return new_command