WebSocket test server migration on PPAPI tests

net/data/websocket/close_wsh.py

 # Copyright (c) 2012 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.
 
-def web_socket_do_extra_handshake(request):
+_GOODBYE_MESSAGE = u'Goodbye'
+
+
+def web_socket_do_extra_handshake(_request):
   pass  # Always accept.
 
 
 def web_socket_transfer_data(request):
   while True:
     line = request.ws_stream.receive_message()
     if line is None:
       return
     if isinstance(line, unicode):
       request.ws_stream.send_message(line, binary=False)
+      if line == _GOODBYE_MESSAGE:
+        return
     else:
       request.ws_stream.send_message(line, binary=True)
 
+
+def web_socket_passive_closing_handshake(request):
+  return request.ws_close_code, request.ws_close_reason