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

ppapi/c/private/ppb_flash_clipboard.h

Index: ppapi/c/private/ppb_flash_clipboard.h
diff --git a/ppapi/c/private/ppb_flash_clipboard.h b/ppapi/c/private/ppb_flash_clipboard.h
index c328525b948ccaf776945b03b777c1f71461ff62..21d3ca24ea5a1d35f8ae4213482a324c9c5a5c99 100644
--- a/ppapi/c/private/ppb_flash_clipboard.h
+++ b/ppapi/c/private/ppb_flash_clipboard.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From private/ppb_flash_clipboard.idl modified Wed Nov 23 12:39:42 2011. */
+/* From private/ppb_flash_clipboard.idl modified Wed Dec 14 18:08:00 2011. */
 
 #ifndef PPAPI_C_PRIVATE_PPB_FLASH_CLIPBOARD_H_
 #define PPAPI_C_PRIVATE_PPB_FLASH_CLIPBOARD_H_
@@ -72,7 +72,7 @@ PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_Flash_Clipboard_Format, 4);
  *
  * TODO(viettrungluu): Support more formats (e.g., HTML)....
  */
-struct PPB_Flash_Clipboard {
+struct PPB_Flash_Clipboard_3_0 {
   /**
    * Checks whether a given data format is available from the given clipboard.
    * Returns true if the given format is available from the given clipboard.
@@ -94,6 +94,8 @@ struct PPB_Flash_Clipboard {
                             PP_Flash_Clipboard_Type clipboard_type,
                             struct PP_Var text);
 };
+
+typedef struct PPB_Flash_Clipboard_3_0 PPB_Flash_Clipboard;
 /**
  * @}
  */