Purge references of "Mojo Application" from comments & var names.

mojo/public/js/threading.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.
 
 // Module "mojo/public/js/threading"
 //
 // Note: This file is for documentation purposes only. The code here is not
 // actually executed. The real module is implemented natively in Mojo.
 //
-// This module provides a way for a Mojo application implemented in JS
+// This module provides a way for a Service implemented in JS
 // to exit by quitting the current message loop. This module is not
 // intended to be used by Mojo JS application started by the JS
 // content handler.
 
 while (1);
 
 /**
  * Quits the current message loop, esssentially:
  * base::MessageLoop::current()->QuitNow();
 */
 function quit() { [native code] }