chromium/chrome/test/data/chromeos/app_mode/apps_and_extensions/multi_app_kiosk/src/secondary_extension/v1/main.js

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

chrome.runtime.onMessageExternal.addListener(
  function(request, sender, sendResponse) {
    if (request.ping)
      sendResponse({pingResponse: 'true'});
});