Fix some straight-forward closure compiler errors.

chrome/browser/resources/hotword/nacl_manager.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.
 
 cr.define('hotword', function() {
 'use strict';
 
 /**
  * Class used to manage the state of the NaCl recognizer plugin. Handles all
  * control of the NaCl plugin, including creation, start, stop, trigger, and
@@ skipping 22 matching lines @@
   this.expectingMessage_ = null;
 
   /**
    * Whether the plugin will be started as soon as it stops.
    * @private {boolean}
    */
   this.restartOnStop_ = false;
 
   /**
    * NaCl plugin element on extension background page.
-   * @private {?Nacl}
+   * @private {?HTMLEmbedElement}
    */
   this.plugin_ = null;
 
   /**
    * URL containing hotword-model data file.
    * @private {string}
    */
   this.modelUrl_ = '';
 
   /**
@@ skipping 25 matching lines @@
 var Error_ = hotword.constants.Error;
 
 NaClManager.prototype.__proto__ = cr.EventTarget.prototype;
 
 /**
  * Called when an error occurs. Dispatches an event.
  * @param {!hotword.constants.Error} error
  * @private
  */
 NaClManager.prototype.handleError_ = function(error) {
-  event = new Event(hotword.constants.Event.ERROR);
+  var event = new Event(hotword.constants.Event.ERROR);
   event.data = error;
   this.dispatchEvent(event);
 };
 
 /**
  * @return {boolean} True if the recognizer is in a running state.
  */
 NaClManager.prototype.isRunning = function() {
   return this.recognizerState_ == ManagerState_.RUNNING;
 };
@@ skipping 91 matching lines @@
       langs.push(language.substr(0, hyphen));  // Example: 'en'.
     }
   }
   langs.push('');
   return langs;
 };
 
 /**
  * Creates a NaCl plugin object and attaches it to the page.
  * @param {!string} src Location of the plugin.
- * @return {!Nacl} NaCl plugin DOM object.
+ * @return {!HTMLEmbedElement} NaCl plugin DOM object.
  * @private
  */
 NaClManager.prototype.createPlugin_ = function(src) {
-  var plugin = document.createElement('embed');
+  var plugin = /** @type {HTMLEmbedElement} */(document.createElement('embed'));
   plugin.src = src;
   plugin.type = 'application/x-nacl';
   document.body.appendChild(plugin);
   return plugin;
 };
 
 /**
  * Initializes the NaCl manager.
  * @param {!string} naclArch Either 'arm', 'x86-32' or 'x86-64'.
  * @param {!MediaStream} stream A stream containing an audio source track.
@@ skipping 12 matching lines @@
         naclArch + '_' + langs[i] + '/';
     var dataSrc = folder + hotword.constants.File.RECOGNIZER_CONFIG;
     var pluginSrc = hotword.constants.SHARED_MODULE_ROOT + '/hotword_' +
         langs[i] + '.nmf';
     var dataExists = this.fileExists_(dataSrc) && this.fileExists_(pluginSrc);
     if (!dataExists) {
       continue;
     }
 
     var plugin = this.createPlugin_(pluginSrc);
-    this.plugin_ = /** @type {Nacl} */ (plugin);
+    this.plugin_ = plugin;
     if (!this.plugin_ || !this.plugin_.postMessage) {
       document.body.removeChild(this.plugin_);
       this.recognizerState_ = ManagerState_.ERROR;
       return false;
     }
     this.modelUrl_ = chrome.extension.getURL(dataSrc);
     this.stream_ = stream;
     this.recognizerState_ = ManagerState_.LOADING;
 
     plugin.addEventListener('message',
@@ skipping 17 matching lines @@
     document.body.removeChild(this.plugin_);
     this.plugin_ = null;
   }
   this.clearTimeout_();
   this.recognizerState_ = ManagerState_.SHUTDOWN;
   this.stream_ = null;
 };
 
 /**
  * Sends data to the NaCl plugin.
- * @param {!string} data Command to be sent to NaCl plugin.
+ * @param {!string|!MediaStreamTrack} data Command to be sent to NaCl plugin.
  * @private
  */
 NaClManager.prototype.sendDataToPlugin_ = function(data) {
   assert(this.recognizerState_ != ManagerState_.UNINITIALIZED,
          'Recognizer in uninitialized state');
   this.plugin_.postMessage(data);
 };
 
 /**
  * Waits, with a timeout, for a message to be received from the plugin. If the
@@ skipping 142 matching lines @@
         break;
     }
   }
 };
 
 return {
   NaClManager: NaClManager
 };
 
 });