Fix Chromoting client startup warnings.

remoting/webapp/host_settings.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.
 
 /**
  * @fileoverview
  * Class handling saving and restoring of per-host options.
  */
 
 'use strict';
@@ skipping 63 matching lines @@
  * @return {void} Nothing.
  */
 remoting.HostSettings.loadInternal_ = function(hostId, callback) {
   /**
    * @param {Object.<string>} allHosts The current options for all hosts.
    * @return {void} Nothing.
    */
   var onDone = function(allHosts) {
     var result = {};
     try {
-      result = jsonParseSafe(allHosts[remoting.HostSettings.KEY_]);
-      if (typeof(result) != 'object') {
-        console.error("Error loading host settings: Not an object");
-        result = {};
-      } else if (/** @type {Object} */ (result).hasOwnProperty(hostId) &&
-                 typeof(result[hostId]) == 'object') {
-        callback(result[hostId], result);
-        return;
+      var hosts = allHosts[remoting.HostSettings.KEY_];
+      if (hosts) {
+        result = jsonParseSafe(hosts);
+        if (typeof(result) != 'object') {
+          console.error("Error loading host settings: Not an object");
+          result = {};
+        } else if (/** @type {Object} */ (result).hasOwnProperty(hostId) &&
+                   typeof(result[hostId]) == 'object') {
+          callback(result[hostId], result);
+          return;
+        }
       }
     } catch (err) {
       var typedErr = /** @type {*} */ (err);
       console.error('Error loading host settings:', typedErr);
     }
     callback({}, /** @type {Object} */ (result));
   };
   chrome.storage.local.get(remoting.HostSettings.KEY_, onDone);
 };
 
 /** @type {string} @private */
 remoting.HostSettings.KEY_ = 'remoting-host-options';