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

ppapi/c/ppp_messaging.h

Index: ppapi/c/ppp_messaging.h
diff --git a/ppapi/c/ppp_messaging.h b/ppapi/c/ppp_messaging.h
index 58f46e7f2503c0835b70a8a920ae8ffc64d2011b..8b8c631c9d5cd13a92f5829ae374c45f9bc2ce74 100644
--- a/ppapi/c/ppp_messaging.h
+++ b/ppapi/c/ppp_messaging.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From ppp_messaging.idl modified Mon Aug 29 10:11:34 2011. */
+/* From ppp_messaging.idl modified Wed Oct  5 14:06:02 2011. */
 
 #ifndef PPAPI_C_PPP_MESSAGING_H_
 #define PPAPI_C_PPP_MESSAGING_H_
@@ -35,7 +35,7 @@
  * that you must implement to handle postMessage events on the associated
  * DOM element.
  */
-struct PPP_Messaging {
+struct PPP_Messaging_1_0 {
   /**
    * HandleMessage() is a function that the browser calls when PostMessage()
    * is invoked on the DOM element for the module instance in JavaScript. Note
@@ -70,6 +70,8 @@ struct PPP_Messaging {
    */
   void (*HandleMessage)(PP_Instance instance, struct PP_Var message);
 };
+
+typedef struct PPP_Messaging_1_0 PPP_Messaging;
 /**
  * @}
  */