Added more typechecking functions and unit tests for existing code.

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 27 matching lines @@
 
 /**
  * @param {*} a
  * @param {*} b
  * @param {string=} opt_message
  */
 QUnit.equal = function(a, b, opt_message) {};
 
 /**
  * @param {*} a
+ * @param {*} b
+ * @param {string=} opt_message
+ */
+QUnit.strictEqual = function(a, b, opt_message) {};
+
+/**
+ * @param {Function} func
+ * @param {*=} opt_error
+ * @param {string=} opt_message
+ */
+QUnit.throws = function(func, opt_error, opt_message) {};
+
+/**
+ * @param {*} a
  */
 QUnit.expect = function(a) {};
 
 /**
  * @param {string} desc
  * @param {Object=} dict
  */
 QUnit.module = function(desc, dict) {};
 
 /**
@@ skipping 44 matching lines @@
  */
 QUnit.assert;
 
 var deepEqual = QUnit.deepEqual;
 var equal = QUnit.equal;
 var expect = QUnit.expect;
 var module = QUnit.module;
 var notEqual = QUnit.notEqual;
 var ok = QUnit.ok;
 var test = QUnit.test;