text: // Copyright 2013 The Closure Library Authors. All Rights Reserved.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //      http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS-IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  /**
   * @fileoverview Default factory for <code>WebChannelTransport</code> to
   * avoid exposing concrete classes to clients.
   */
  
  goog.provide('goog.net.createWebChannelTransport');
  
  goog.require('goog.labs.net.webChannel.WebChannelBaseTransport');
  
  
  /**
   * Create a new WebChannelTransport instance using the default implementation.
   * Throws an error message if no default transport available in the current
   * environment.
   *
   * @return {!goog.net.WebChannelTransport} the newly created transport instance.
   */
  goog.net.createWebChannelTransport = function() {
    return new goog.labs.net.webChannel.WebChannelBaseTransport();
  };
  