Creates GCP promo for ChromeOS users with no cloud printers.

chrome/browser/resources/print_preview/cloud_print_interface.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('cloudprint', function() {
   'use strict';
 
   /**
    * API to the Google Cloud Print service.
    * @param {string} baseUrl Base part of the Google Cloud Print service URL
    *     with no trailing slash. For example,
    *     'https://www.google.com/cloudprint'.
    * @constructor
    * @extends {cr.EventTarget}
    */
   function CloudPrintInterface(baseUrl) {
     /**
      * The base URL of the Google Cloud Print API.
      * @type {string}
      * @private
      */
-    this.baseURL_ = baseUrl;
+    this.baseUrl_ = baseUrl;
 
     /**
      * Last received XSRF token. Sent as a parameter in every request.
      * @type {string}
      * @private
      */
     this.xsrfToken_ = '';
   };
 
   /**
@@ skipping 53 matching lines @@
    * @enum {string}
    * @private
    */
   CloudPrintInterface.JsonFields_ = {
     PRINTER: 'printer'
   };
 
   CloudPrintInterface.prototype = {
     __proto__: cr.EventTarget.prototype,
 
+    /** @return {string} Base URL of the Google Cloud Print service. */
+    get baseUrl() {
+      return this.baseUrl_;
+    },
+
     /**
      * Sends a Google Cloud Print search API request.
      * @param {boolean} isRecent Whether to search for only recently used
      *     printers.
      */
     search: function(isRecent) {
       var params = [
         new HttpParam('connection_status', 'ALL'),
         new HttpParam('client', 'chrome')
       ];
@@ skipping 134 matching lines @@
      * @param {Array.<!HttpParam>} params HTTP parameters to include in the
      *     request.
      * @param {function(number, Object)} callback Callback to invoke when
      *     request completes.
      */
     sendRequest_: function(method, action, params, callback) {
       if (!this.xsrfToken_) {
         // TODO(rltoscano): Should throw an error if not a read-only action or
         // issue an xsrf token request.
       }
-      var url = this.baseURL_ + '/' + action + '?xsrf=' + this.xsrfToken_;
+      var url = this.baseUrl_ + '/' + action + '?xsrf=' + this.xsrfToken_;
       var body = null;
 
       if (params) {
         if (method == 'GET') {
           url = params.reduce(function(partialUrl, param) {
             return partialUrl + '&' + param.name + '=' +
                 encodeURIComponent(param.value);
           }, url);
         } else if (method == 'POST') {
           body = params.reduce(function(partialBody, param) {
@@ skipping 177 matching lines @@
      * @type {string}
      */
     this.value = value;
   };
 
   // Export
   return {
     CloudPrintInterface: CloudPrintInterface
   };
 });