Mojo: Add PRESUBMIT.py to mojo/.

mojo/public/tools/bindings/pylib/mojom/parse/lexer.py

 # 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.
 
 import imp
 import os.path
 import sys
 
-# Disable lint check for finding modules:
-# pylint: disable=F0401
-
 def _GetDirAbove(dirname):
   """Returns the directory "above" this file containing |dirname| (which must
   also be "above" this file)."""
   path = os.path.abspath(__file__)
   while True:
     path, tail = os.path.split(path)
     assert tail
     if tail == dirname:
       return path
 
 try:
   imp.find_module("ply")
 except ImportError:
   sys.path.append(os.path.join(_GetDirAbove("mojo"), "third_party"))
 from ply.lex import TOKEN
 
 from ..error import Error
 
 
-# Disable lint check for exceptions deriving from Exception:
-# pylint: disable=W0710
 class LexError(Error):
   """Class for errors from the lexer."""
 
   def __init__(self, filename, message, lineno):
     Error.__init__(self, filename, message, lineno=lineno)
 
 
 # We have methods which look like they could be functions:
 # pylint: disable=R0201
 class Lexer(object):
@@ skipping 201 matching lines @@
     return t
 
   # Ignore C and C++ style comments
   def t_COMMENT(self, t):
     r'(/\*(.|\n)*?\*/)|(//.*(\n[ \t]*//.*)*)'
     t.lexer.lineno += t.value.count("\n")
 
   def t_error(self, t):
     msg = "Illegal character %s" % repr(t.value[0])
     self._error(msg, t)