Fix host installation on i686 Linux.

remoting/webapp/unittests/it2me_helpee_channel_unittest.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.
 
 (function() {
 
 'use strict';
 
 var hostInstaller = null;
 var hangoutPort = null;
@@ skipping 16 matching lines @@
       initialize: function() {},
       initialized: function() {},
       connect: function() {},
       disconnect: function() {},
       getAccessCode: function() {},
       unhookCallbacks: function() {}
     };
 
     // HostInstaller
     hostInstaller = {
-      isInstalled: function() {},
       download: function() {}
     };
 
     // HelpeeChannel
     helpeeChannel = new remoting.It2MeHelpeeChannel(
         hangoutPort,
         host,
         hostInstaller,
         onDisposedCallback);
     helpeeChannel.init();
 
     // remoting.settings
     remoting.settings = new remoting.Settings();
   }
 });
 
 test('hello() should return supportedFeatures', function() {
   hangoutPort.onMessage.mock$fire(
       { method: remoting.It2MeHelpeeChannel.HangoutMessageTypes.HELLO });
 
   sinon.assert.calledWith(hangoutPort.postMessage, {
     method: remoting.It2MeHelpeeChannel.HangoutMessageTypes.HELLO_RESPONSE,
     supportedFeatures: base.values(remoting.It2MeHelperChannel.Features)
   });
 });
 
 QUnit.asyncTest(
     'isHostInstalled() should return false if host is not installed',
     function() {
-  sinon.stub(hostInstaller, 'isInstalled').returns(Promise.resolve(false));
+  sinon.stub(remoting.HostInstaller, 'isInstalled')
+      .returns(Promise.resolve(false));
 
   var MessageTypes = remoting.It2MeHelpeeChannel.HangoutMessageTypes;
   hangoutPort.onMessage.mock$fire({
     method: MessageTypes.IS_HOST_INSTALLED
   });
 
   window.requestAnimationFrame(function() {
+    remoting.HostInstaller.isInstalled.restore();
     sinon.assert.calledWith(hangoutPort.postMessage, {
       method: MessageTypes.IS_HOST_INSTALLED_RESPONSE,
       result: false
     });
     QUnit.start();
   });
 });
 
 QUnit.asyncTest('isHostInstalled() should return true if host is installed',
     function() {
-  sinon.stub(hostInstaller, 'isInstalled').returns(Promise.resolve(true));
+  sinon.stub(remoting.HostInstaller, 'isInstalled')
+      .returns(Promise.resolve(true));
 
   var MessageTypes = remoting.It2MeHelpeeChannel.HangoutMessageTypes;
   hangoutPort.onMessage.mock$fire({
     method: MessageTypes.IS_HOST_INSTALLED
   });
 
   window.requestAnimationFrame(function() {
+    remoting.HostInstaller.isInstalled.restore();
     sinon.assert.calledWith(hangoutPort.postMessage, {
       method: MessageTypes.IS_HOST_INSTALLED_RESPONSE,
       result: true
     });
     QUnit.start();
   });
 });
 
 test('downloadHost() should trigger a host download',
     function() {
@@ skipping 55 matching lines @@
 
 test('should disconnect the session if Hangout crashes', function() {
   sinon.spy(host, 'disconnect');
   hangoutPort.onDisconnect.mock$fire();
 
   sinon.assert.called(onDisposedCallback);
   sinon.assert.called(host.disconnect);
 });
 
 })();