Add 'requests' library to third_party.

third_party/requests/packages/charade/big5prober.py

Index: third_party/requests/packages/charade/big5prober.py
diff --git a/third_party/requests/packages/charade/big5prober.py b/third_party/requests/packages/charade/big5prober.py
new file mode 100644
index 0000000000000000000000000000000000000000..7382f7c5d497d6333463ebd55f0e87d3bb69e47c
--- /dev/null
+++ b/third_party/requests/packages/charade/big5prober.py
@@ -0,0 +1,42 @@
+######################## BEGIN LICENSE BLOCK ########################
+# The Original Code is Mozilla Communicator client code.
+#
+# The Initial Developer of the Original Code is
+# Netscape Communications Corporation.
+# Portions created by the Initial Developer are Copyright (C) 1998
+# the Initial Developer. All Rights Reserved.
+#
+# Contributor(s):
+#   Mark Pilgrim - port to Python
+#
+# 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.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+# 02110-1301  USA
+######################### END LICENSE BLOCK #########################
+
+from .mbcharsetprober import MultiByteCharSetProber
+from .codingstatemachine import CodingStateMachine
+from .chardistribution import Big5DistributionAnalysis
+from .mbcssm import Big5SMModel
+
+
+class Big5Prober(MultiByteCharSetProber):
+    def __init__(self):
+        MultiByteCharSetProber.__init__(self)
+        self._mCodingSM = CodingStateMachine(Big5SMModel)
+        self._mDistributionAnalyzer = Big5DistributionAnalysis()
+        self.reset()
+
+    def get_charset_name(self):
+        return "Big5"