Python 3 compatibility

pylib/gyp/generator/ninja_test.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.
 
 """ Unit tests for the ninja.py file. """
 
 import gyp.generator.ninja as ninja
 import unittest
-import StringIO
 import sys
 import TestCommon
 
 
 class TestPrefixesAndSuffixes(unittest.TestCase):
   def test_BinaryNamesWindows(self):
     # These cannot run on non-Windows as they require a VS installation to
     # correctly handle variable expansion.
     if sys.platform.startswith('win'):
       writer = ninja.NinjaWriter('foo', 'wee', '.', '.', 'build.ninja', '.',
@@ skipping 16 matching lines @@
         startswith('lib'))
     self.assertTrue(writer.ComputeOutputFileName(spec, 'static_library').
         startswith('lib'))
     self.assertTrue(writer.ComputeOutputFileName(spec, 'shared_library').
         endswith('.so'))
     self.assertTrue(writer.ComputeOutputFileName(spec, 'static_library').
         endswith('.a'))
 
 if __name__ == '__main__':
   unittest.main()