1// Copyright (c) 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5chrome.runtime.onConnect.addListener(function(port) {
6  port.onMessage.addListener(function(msg) {
7    port.postMessage({counter: msg.counter+1});
8  });
9});
10
11chrome.extension.onRequest.addListener(
12  function(request, sender, sendResponse) {
13    sendResponse({counter: request.counter+1});
14  });
15