Enable presubmit pylint in build/android.

build/android/symbolize_test.py

 #!/usr/bin/env python
 #
 # Copyright 2013 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.
 
 """Unittest for symbolize.py.
 
 This test uses test libraries generated by the Android g++ toolchain.
 
 Should things break you can recreate the libraries and get the updated
 addresses and demangled names by running the following:
   cd test/symbolize/
   make
   nm -gC *.so
 """
 
-import sys
 import StringIO
 import unittest
 
 import symbolize
 
 LIB_A_PATH = '/build/android/tests/symbolize/liba.so'
 LIB_B_PATH = '/build/android/tests/symbolize/libb.so'
 
 def RunSymbolizer(text):
   output = StringIO.StringIO()
@@ skipping 93 matching lines @@
     expected = 'TOP\n'
     expected += 'LEFT #00 0x00000000 A::Bar(char const*) RIGHT\n'
     expected += 'LEFT #01 0x00000000 B::Baz(float) RIGHT\n'
     expected += 'BOTTOM\n'
     actual = RunSymbolizer(text)
     self.assertEqual(expected, actual)
 
 
 if __name__ == '__main__':
   unittest.main()