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

ppapi/c/ppp_instance.h

 /* Copyright (c) 2011 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.
  */
 
-/* From ppp_instance.idl modified Tue Aug 23 11:29:06 2011. */
+/* From ppp_instance.idl modified Sat Dec 17 10:13:27 2011. */
 
 #ifndef PPAPI_C_PPP_INSTANCE_H_
 #define PPAPI_C_PPP_INSTANCE_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_point.h"
 #include "ppapi/c/pp_rect.h"
 #include "ppapi/c/pp_resource.h"
@@ skipping 14 matching lines @@
  * @addtogroup Interfaces
  * @{
  */
 /**
  * The <code>PPP_Instance</code> interface contains pointers to a series of
  * functions that you must implement in your module. These functions can be
  * trivial (simply return the default return value) unless you want your module
  * to handle events such as change of focus or input events (keyboard/mouse)
  * events.
  */
-struct PPP_Instance {
+struct PPP_Instance_1_0 {
   /**
    * DidCreate() is a creation handler that is called when a new instance is
    * created. This function is called for each instantiation on the page,
    * corresponding to one \<embed\> tag on the page.
    *
    * Generally you would handle this call by initializing the information
    * your module associates with an instance and creating a mapping from the
    * given <code>PP_Instance</code> handle to this data. The
    * <code>PP_Instance</code> handle will be used in subsequent calls to
    * identify which instance the call pertains to.
@@ skipping 136 matching lines @@
    * @param[in] instance A <code>PP_Instance</code> identifying the instance
    * that should do the load.
    *
    * @param[in] url_loader An open <code>PPB_URLLoader</code> instance.
    *
    * @return <code>PP_TRUE</code> if the data was handled,
    * <code>PP_FALSE</code> otherwise.
    */
   PP_Bool (*HandleDocumentLoad)(PP_Instance instance, PP_Resource url_loader);
 };
+
+typedef struct PPP_Instance_1_0 PPP_Instance;
 /**
  * @}
  */
 
-
-typedef struct PPP_Instance PPP_Instance_1_0;
-
 #endif  /* PPAPI_C_PPP_INSTANCE_H_ */