Improve HRD first run experience

remoting/webapp/crd/js/typecheck.js

 // Copyright 2014 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.
 
 /**
  * Get the |key| attribute in the given |dict| and verify that it is an
  * array value.
  *
  * If the attribute is not an array, then an exception will be thrown unless
  * a default value is specified in |opt_default|.
@@ skipping 23 matching lines @@
  * If the attribute is not a boolean, then an exception will be thrown unless
  * a default value is specified in |opt_default|.
  *
  * @param {Object.<string,*>} dict The dictionary containing the |key|
  * @param {string} key The key to typecheck in the |dict|.
  * @param {boolean=} opt_default The value to return if the key is not a bool.
  * @return {boolean} The |key| attribute value as a boolean.
  */
 function getBooleanAttr(dict, key, opt_default) {
   var value = /** @type {boolean} */ (dict[key]);
-  if (typeof value != 'boolean') {
+  if (value == 'true' || value == 'false') {
+    return (value == 'true');
+  }
+  if (typeof value !== 'boolean') {
     if (opt_default === undefined) {
       throw 'Invalid data type for ' + key +
           ' (expected: boolean, actual: ' + typeof value + ')';
     } else {
       return opt_default;
     }
   }
   return value;
 }
 
@@ skipping 81 matching lines @@
  * @param {string} jsonString The JSON string to parse.
  * @return {Object} The JSON object created from the |jsonString|.
  */
 function getJsonObjectFromString(jsonString) {
   var value = base.jsonParseSafe(jsonString);
   if (typeof value != 'object') {
     throw 'Invalid data type (expected: Object, actual: ' + typeof value + ')';
   }
   return value;
 }