Fix host installation on i686 Linux.

remoting/webapp/crd/js/it2me_helpee_channel.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.
 
 /**
  * @fileoverview
  *
  * It2MeHelpeeChannel relays messages between the Hangouts web page (Hangouts)
  * and the It2Me Native Messaging Host (It2MeHost) for the helpee (the Hangouts
  * participant who is receiving remoting assistance).
@@ skipping 196 matching lines @@
 
   /** @param {boolean} installed */
   function sendResponse(installed) {
     var MessageTypes = remoting.It2MeHelpeeChannel.HangoutMessageTypes;
     that.hangoutPort_.postMessage({
       method: MessageTypes.IS_HOST_INSTALLED_RESPONSE,
       result: installed
     });
   }
 
-  this.hostInstaller_.isInstalled().then(
+  remoting.HostInstaller.isInstalled().then(
     sendResponse,
     /** @type {function(*):void} */(this.sendErrorResponse_.bind(this, message))
   );
 };
 
 /**
  * @param {{method:string, data:Object.<string,*>}} message
  * @private
  */
 remoting.It2MeHelpeeChannel.prototype.handleDownloadHost_ = function(message) {
@@ skipping 260 matching lines @@
 
   console.error('Error responding to message method:' +
                 (incomingMessage ? incomingMessage.method : 'null') +
                 ' error:' + error);
   this.hangoutPort_.postMessage({
     method: remoting.It2MeHelpeeChannel.HangoutMessageTypes.ERROR,
     message: error,
     request: incomingMessage
   });
 };