Python 3 compatibility

test/mac/gyptest-postbuild-defaults.py

 #!/usr/bin/env python
 
 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 Verifies that a postbuild invoking |defaults| works.
 """
 
+from __future__ import print_function
+
 import TestGyp
 
 import sys
 
 if sys.platform == 'darwin':
-  print "This test is currently disabled: https://crbug.com/483696."
+  print("This test is currently disabled: https://crbug.com/483696.")
   sys.exit(0)
 
   test = TestGyp.TestGyp(formats=['ninja', 'make', 'xcode'])
 
   CHDIR = 'postbuild-defaults'
   test.run_gyp('test.gyp', chdir=CHDIR)
   test.build('test.gyp', test.ALL, chdir=CHDIR)
 
   result_file = test.built_file_path('result', chdir=CHDIR)
   test.must_exist(result_file)
   test.must_contain(result_file, '''\
 Test
 ${PRODUCT_NAME}
 ''')
 
   test.pass_test()