text: // Copyright 2011 Google Inc. 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.
  
  if (typeof(dom) == 'undefined') {
    dom = {};
  }
  
  /**
   * Cross-domain client-side message delivery library supporting only
   * point-to-point communications.
   */
  dom.channels = dom.channels || {};
  
  /** Configuration for cross-domain client-side message delivery library. */
  dom.channels.config = dom.channels.config || {};
  
  /**
   * URL parameter name to force origin verification.
   * @type {string}
   */
  dom.channels.config.FORCE_SECURE_PARAM = 'forcesecure';
  
  /**
   * URL parameter value to force origin verification.
   * @type {string}
   */
  dom.channels.config.FORCE_SECURE_PARAM_VALUE = '1';
  
  /**
   * URL parameter name for channel security token.
   * @type {string}
   */
  dom.channels.config.RPC_TOKEN_PARAM = 'rpctoken';
  
  /**
   * URL parameter name for parent URL origin.
   * @type {string}
   */
  dom.channels.config.PARENT_ORIGIN_PARAM = 'parent';
  