Mojo: Add PRESUBMIT.py to mojo/.

mojo/public/tools/bindings/pylib/mojom_tests/parse/run_parser.py

 #!/usr/bin/env python
 # Copyright 2014 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.
 
 """Simple testing utility to just run the mojom parser."""
 
 
 import os.path
 import sys
 
 sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)),
                                 os.path.pardir, os.path.pardir))
 
-# Disable lint check for finding modules:
-# pylint: disable=F0401
-
 from mojom.parse.parser import Parse, ParseError
 
 
 def main(argv):
   if len(argv) < 2:
     print "usage: %s filename" % argv[0]
     return 0
 
   for filename in argv[1:]:
     with open(filename) as f:
       print "%s:" % filename
       try:
         print Parse(f.read(), filename)
       except ParseError, e:
         print e
         return 1
 
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))