Enable presubmit pylint in build/android.

build/android/gyp/proguard.py

Index: build/android/gyp/proguard.py
diff --git a/build/android/gyp/proguard.py b/build/android/gyp/proguard.py
index 41d4a6948f7e77e73c97294ff98f2655bc0eaaa2..7c959c60c82031898d8ce713436780bce959edea 100755
--- a/build/android/gyp/proguard.py
+++ b/build/android/gyp/proguard.py
@@ -4,7 +4,6 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import fnmatch
 import optparse
 import os
 import sys
@@ -29,7 +28,7 @@ def DoProguard(options):
   build_utils.CheckOutput(proguard_cmd, print_stdout=True)
 
 
-def main(argv):
+def main():
   parser = optparse.OptionParser()
   parser.add_option('--proguard-path',
                     help='Path to the proguard executable.')
@@ -53,4 +52,4 @@ def main(argv):
 
 
 if __name__ == '__main__':
-  sys.exit(main(sys.argv))
+  sys.exit(main())