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

ppapi/c/dev/ppp_zoom_dev.h

Index: ppapi/c/dev/ppp_zoom_dev.h
diff --git a/ppapi/c/dev/ppp_zoom_dev.h b/ppapi/c/dev/ppp_zoom_dev.h
index fabf2a6a954ccb819dea6b36cda921824cf46370..ab196487d47f527c2063f9c4923916b90dcd3cb3 100644
--- a/ppapi/c/dev/ppp_zoom_dev.h
+++ b/ppapi/c/dev/ppp_zoom_dev.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From dev/ppp_zoom_dev.idl modified Fri Aug 26 15:42:06 2011. */
+/* From dev/ppp_zoom_dev.idl modified Wed Oct  5 14:06:02 2011. */
 
 #ifndef PPAPI_C_DEV_PPP_ZOOM_DEV_H_
 #define PPAPI_C_DEV_PPP_ZOOM_DEV_H_
@@ -29,7 +29,7 @@
 /**
  * Zoom interface should only apply to those full-page "plugin-document".
  */
-struct PPP_Zoom_Dev {
+struct PPP_Zoom_Dev_0_3 {
   /**
    * Instruct plug-in to zoom according to the given factor and whether the zoom
    * only applies to text only.  The scale factor is the percentage divided by
@@ -37,6 +37,8 @@ struct PPP_Zoom_Dev {
    */
   void (*Zoom)(PP_Instance instance, double factor, PP_Bool text_only);
 };
+
+typedef struct PPP_Zoom_Dev_0_3 PPP_Zoom_Dev;
 /**
  * @}
  */