[Chromoting] Enable jscompile for webapp unittests.

remoting/webapp/unittests/it2me_helper_channel_unittest.js

Index: remoting/webapp/unittests/it2me_helper_channel_unittest.js
diff --git a/remoting/webapp/unittests/it2me_helper_channel_unittest.js b/remoting/webapp/unittests/it2me_helper_channel_unittest.js
index f0a0fa230ea08838d45436cb292d28b4daa4812c..222fa49efe29121d28b80a272f11b5bf584514a9 100644
--- a/remoting/webapp/unittests/it2me_helper_channel_unittest.js
+++ b/remoting/webapp/unittests/it2me_helper_channel_unittest.js
@@ -2,6 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+/**
+ * @fileoverview
+ * @suppress {checkTypes|checkVars|reportUnknownTypes|visibility}
+ */
+
 (function() {
 
 'use strict';
@@ -25,12 +30,12 @@ module('It2MeHelperChannel', {
     appLauncher.close = sinon.spy(appLauncher, 'close');
 
     // HangoutPort.
-    hangoutPort = new chromeMocks.runtime.Port();
+    hangoutPort = new chrome.runtime.Port();
     hangoutPort.postMessage = sinon.spy(hangoutPort, 'postMessage');
     hangoutPort.disconnect = sinon.spy(hangoutPort, 'disconnect');
 
     // WebappPort.
-    webappPort = new chromeMocks.runtime.Port();
+    webappPort = new chrome.runtime.Port();
     webappPort.sender = {
       tab : {
         id : 'tabId'