Update net/data/websocket/close-code-and-reason_wsh.py

Sync with one in the LayoutTests directory to include the code to
wait for a close frame from the client.

BUG=396399
R=jgraettinger,ricea

Review URL: https://codereview.chromium.org/415953003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285497 0039d316-1c4b-4281-b951-d872f2087c98

net/data/websocket/close-code-and-reason_wsh.py

@@ -23,3 +23,6 @@ def web_socket_transfer_data(request):
     code, reason = line.split(' ', 1)
     data = struct.pack('!H', int(code)) + reason.encode('utf-8')
   request.connection.write(stream.create_close_frame(data))
+  request.server_terminated = True
+  # Wait for Close frame from client.
+  request.ws_stream.receive_message()