Revert 161304 - WebSocket test server migration on ExtensionApiTest.WebSocket

net/data/websocket/echo_wsh.py

Index: net/data/websocket/echo_wsh.py
===================================================================
--- net/data/websocket/echo_wsh.py	(revision 161307)
+++ net/data/websocket/echo_wsh.py	(working copy)
@@ -1,18 +0,0 @@
-# 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):
-  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)
-    else:
-      request.ws_stream.send_message(line, binary=True)
-