Update 'requests' lib to v2.0.

third_party/requests/packages/charade/__init__.py

 ######################## BEGIN LICENSE BLOCK ########################
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
 # License as published by the Free Software Foundation; either
 # version 2.1 of the License, or (at your option) any later version.
 #
 # This library is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 # Lesser General Public License for more details.
@@ skipping 12 matching lines @@
     if ((version_info < (3, 0) and isinstance(aBuf, unicode)) or
             (version_info >= (3, 0) and not isinstance(aBuf, bytes))):
         raise ValueError('Expected a bytes object, not a unicode object')
 
     from . import universaldetector
     u = universaldetector.UniversalDetector()
     u.reset()
     u.feed(aBuf)
     u.close()
     return u.result