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

ppapi/c/dev/ppb_widget_dev.h

Index: ppapi/c/dev/ppb_widget_dev.h
diff --git a/ppapi/c/dev/ppb_widget_dev.h b/ppapi/c/dev/ppb_widget_dev.h
index 003bacefa5b02caeba18d7027cc410e8472e5723..f55570862e5d35314f024fa5eabef75fae2a4783 100644
--- a/ppapi/c/dev/ppb_widget_dev.h
+++ b/ppapi/c/dev/ppb_widget_dev.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From dev/ppb_widget_dev.idl modified Fri Aug 26 15:18:14 2011. */
+/* From dev/ppb_widget_dev.idl modified Wed Oct  5 14:06:02 2011. */
 
 #ifndef PPAPI_C_DEV_PPB_WIDGET_DEV_H_
 #define PPAPI_C_DEV_PPB_WIDGET_DEV_H_
@@ -32,7 +32,7 @@
 /**
  * The interface for reusing browser widgets.
  */
-struct PPB_Widget_Dev {
+struct PPB_Widget_Dev_0_3 {
   /**
    * Returns PP_TRUE if the given resource is a Widget. Returns PP_FALSE if the
    * resource is invalid or some type other than an Widget.
@@ -59,6 +59,8 @@ struct PPB_Widget_Dev {
    */
   void (*SetLocation)(PP_Resource widget, const struct PP_Rect* location);
 };
+
+typedef struct PPB_Widget_Dev_0_3 PPB_Widget_Dev;
 /**
  * @}
  */