Update PPAPI IDL generator to define versioned structs, and unversioned typedef.

ppapi/api/ppp_mouse_lock.idl

-/* Copyright (c) 2011 The Chromium Authors. All rights reserved.
+/* Copyright (c) 2012 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 defines the <code>PPP_MouseLock</code> interface containing a 
  * function that you must implement to receive mouse lock events from the
  * browser. 
  */
 
 label Chrome {
   M16 = 1.0
 };
 
 /**
  * The <code>PPP_MouseLock</code> interface contains a function that you must
  * implement to receive mouse lock events from the browser.
  */
 interface PPP_MouseLock {
   /**
    * MouseLockLost() is called when the instance loses the mouse lock, such as   
    * when the user presses the ESC key.
    *
    * @param[in] instance A <code>PP_Instance</code> identifying one instance
    * of a module.
    */
   void MouseLockLost([in] PP_Instance instance);
 };