Get host id via getDaemonConfig.

remoting/webapp/host_controller.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.
 
 'use strict';
 
 /** @suppress {duplicate} */
 var remoting = remoting || {};
 
 /** @constructor */
@@ skipping 102 matching lines @@
     var e = new Array();
     for (var i = 0; i < 8; i++) {
       e[i] = (/** @type {number} */random[i] + 0x10000).
           toString(16).substring(1);
     }
     return e[0] + e[1] + '-' + e[2] + "-" + e[3] + '-' +
         e[4] + '-' + e[5] + e[6] + e[7];
   };
 
   var newHostId = generateUuid();
-  // TODO(jamiewalch): Create an unprivileged API to get the host id from the
-  // plugin instead of storing it locally (crbug.com/121518).
-  window.localStorage.setItem('me2me-host-id', newHostId);
 
   /** @param {function(remoting.HostController.AsyncResult):void} callback
    *  @param {remoting.HostController.AsyncResult} result
    *  @param {string} hostName */
   function onStarted(callback, result, hostName) {
     if (result == remoting.HostController.AsyncResult.OK) {
       // Create a dummy remoting.Host instance to represent the local host.
       // Refreshing the list is no good in general, because the directory
       // information won't be in sync for several seconds. We don't know the
       // host JID or public key, but they can be missing from the cache with
@@ skipping 81 matching lines @@
  * @return {void} Nothing.
  */
 remoting.HostController.prototype.stop = function(callback) {
   /** @type {remoting.HostController} */
   var that = this;
 
   /** @param {remoting.HostController.AsyncResult} result */
   function onStopped(result) {
     if (that.localHost && that.localHost.hostId)
       remoting.HostList.unregisterHostById(that.localHost.hostId);
-    window.localStorage.removeItem('me2me-host-id');
     callback(result);
   };
   this.plugin_.stopDaemon(onStopped);
 };
 
 /**
  * @param {string} newPin The new PIN to set
  * @param {function(remoting.HostController.AsyncResult):void} callback
  *     Callback to be called when finished.
  * @return {void} Nothing.
@@ skipping 59 matching lines @@
     this.hostTableEntry_ = null;
   }
 };
 
 /**
  * Update the internal state so that the local host can be correctly filtered
  * out of the host list.
  *
  * @param {remoting.HostList} hostList The new host list, returned by the
  *     Chromoting service.
- * @param {function():void} onDone Completion callback. TODO(jamiewalch): For
- *     now, this is synchronous and reads the host id from local storage. In
- *     the future, it will asynchronously read the host id from the plugin
- *     (crbug.com/121518).
+ * @param {function():void} onDone Completion callback.
  */
 remoting.HostController.prototype.onHostListRefresh =
     function(hostList, onDone) {
-  var hostId = window.localStorage.getItem('me2me-host-id');
-  if (hostId && typeof(hostId) == 'string') {
-    this.setHost(hostList.getHostForId(/** @type{string} */(hostId)));
-  } else {
-    this.setHost(null);
-  }
-  onDone();
+  /** @type {remoting.HostController} */
+  var that = this;
+  /** @param {string} configStr */
+  function onConfig(configStr) {
+    var config = /** @type {Object.<string,string>} */ JSON.parse(configStr);
+    if (typeof config['host_id'] == 'string') {
+      var hostId = config['host_id'];
+      that.setHost(hostList.getHostForId(hostId));
+    } else {
+      that.setHost(null);
+    }
+    onDone();
+  };
+  this.plugin_.getDaemonConfig(onConfig);
 };
 
 /** @type {remoting.HostController} */
 remoting.hostController = null;