Add stdout param to SubprocessCallAndFilter().

tests/gclient_utils_test.py

 #!/usr/bin/python
 # Copyright (c) 2010 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 StringIO
 
 # Fixes include path.
 from super_mox import SuperMoxTestBase
 
@@ skipping 70 matching lines @@
   class ProcessIdMock(object):
     def __init__(self, test_string):
       self.stdout = StringIO.StringIO(test_string)
     def wait(self):
         pass
 
   def _inner(self, command, test_string):
     in_directory = 'bleh'
     env = gclient_utils.os.environ.copy()
     env['LANGUAGE'] = 'en'
-    print("\n________ running 'boo foo bar' in 'bleh'")
+    gclient_utils.sys.stdout.write(
+        '\n________ running \'boo foo bar\' in \'bleh\'\n')
     for i in test_string:
       gclient_utils.sys.stdout.write(i)
     gclient_utils.subprocess.Popen(
         command,
         cwd=in_directory,
         shell=(gclient_utils.sys.platform == 'win32'),
         env=env,
         stdout=gclient_utils.subprocess.PIPE,
         stderr=gclient_utils.subprocess.STDOUT,
         bufsize=0).AndReturn(self.ProcessIdMock(test_string))
@@ skipping 62 matching lines @@
     out_url, out_rev = gclient_utils.SplitUrlRevision("%s@%s" % (url, rev))
     self.assertEquals(out_rev, rev)
     self.assertEquals(out_url, url)
 
 
 if __name__ == '__main__':
   import unittest
   unittest.main()
 
 # vim: ts=2:sw=2:tw=80:et: