Added unit test for HostDaemonFacade.

remoting/webapp/js_proto/qunit_proto.js

 // Copyright 2015 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.
 
 // This file contains various hacks needed to inform JSCompiler of various
 // QUnit-specific properties and methods. It is used only with JSCompiler to
 // verify the type-correctness of our code.
 
 
 /** @type {Object} */
@@ skipping 66 matching lines @@
 
 /**
  * @param {function()} a
  * @param {*=} opt_b
  * @param {string=} opt_message
  */
 QUnit.Assert.prototype.throws = function(a, opt_b, opt_message) {};
 
 /**
  * @typedef {{
- *   beforeEach: (function(QUnit.Assert=) | undefined),
- *   afterEach: (function(QUnit.Assert=) | undefined)
+ *   beforeEach: (function(!QUnit.Assert) | undefined),
+ *   afterEach: (function(!QUnit.Assert) | undefined)
  * }}
  */
 QUnit.ModuleArgs;
 
 /**
  * @param {string} desc
  * @param {QUnit.ModuleArgs=} opt_args=
  */
 QUnit.module = function(desc, opt_args) {};
 
 /**
  * @param {string} desc
- * @param {function(QUnit.Assert)} f
+ * @param {function(!QUnit.Assert)} f
  */
 QUnit.test = function(desc, f) {};