WebSocket test server migration on ExtensionApiTest.WebSocket

net/data/websocket/echo_wsh.py

Index: net/data/websocket/echo_wsh.py
diff --git a/net/data/websocket/echo_wsh.py b/net/data/websocket/echo_wsh.py
new file mode 100644
index 0000000000000000000000000000000000000000..86ab63c038f19618c3f8c1013144f00415f97394
--- /dev/null
+++ b/net/data/websocket/echo_wsh.py
@@ -0,0 +1,18 @@
+# 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)
+