[Android] Lint the rest of pylib.

build/android/pylib/content_settings.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.
 
 
 class ContentSettings(dict):
 
   """A dict interface to interact with device content settings.
 
   System properties are key/value pairs as exposed by adb shell content.
   """
 
   def __init__(self, table, adb):
     super(ContentSettings, self).__init__()
     try:
       sdk_version = int(adb.system_properties['ro.build.version.sdk'])
       assert sdk_version >= 16, (
           'ContentSettings supported only on SDK 16 and later')
     except ValueError:
       assert False, ('Unknown SDK version %s' %
           adb.system_properties['ro.build.version.sdk'])
     self._table = table
     self._adb = adb
 
-  def _GetTypeBinding(self, value):
+  @staticmethod
+  def _GetTypeBinding(value):
     if isinstance(value, bool):
       return 'b'
     if isinstance(value, float):
       return 'f'
     if isinstance(value, int):
       return 'i'
     if isinstance(value, long):
       return 'l'
     if isinstance(value, str):
       return 's'
@@ skipping 35 matching lines @@
               self._table,
               self._GetTypeBinding(key), key,
               self._GetTypeBinding(value), value))
 
   def __delitem__(self, key):
     self._adb.RunShellCommandWithSU(
         'content delete --uri content://%s '
         '--bind name:%s:%s' % (
             self._table,
             self._GetTypeBinding(key), key))