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

ppapi/c/private/ppb_flash_menu.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.
 
 #ifndef PPAPI_C_PRIVATE_PPB_FLASH_MENU_H_
 #define PPAPI_C_PRIVATE_PPB_FLASH_MENU_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_point.h"
 #include "ppapi/c/pp_resource.h"
 
-#define PPB_FLASH_MENU_INTERFACE "PPB_Flash_Menu;0.2"
+#define PPB_FLASH_MENU_INTERFACE_0_2 "PPB_Flash_Menu;0.2"
+#define PPB_FLASH_MENU_INTERFACE PPB_FLASH_MENU_INTERFACE_0_2
 
 struct PP_CompletionCallback;
 
 typedef enum {
   // TODO(viettrungluu): Radio items not supported yet. Will also probably want
   // special menu items tied to clipboard access.
   PP_FLASH_MENUITEM_TYPE_NORMAL = 0,
   PP_FLASH_MENUITEM_TYPE_CHECKBOX,
   PP_FLASH_MENUITEM_TYPE_SEPARATOR,
   PP_FLASH_MENUITEM_TYPE_SUBMENU
 } PP_Flash_MenuItem_Type;
 
 struct PP_Flash_MenuItem {
   PP_Flash_MenuItem_Type type;
   char* name;
   int32_t id;
   PP_Bool enabled;
   PP_Bool checked;
   struct PP_Flash_Menu* submenu;
 };
 
 struct PP_Flash_Menu {
   uint32_t count;
   struct PP_Flash_MenuItem* items;
 };
 
-struct PPB_Flash_Menu {
+struct PPB_Flash_Menu_0_2 {
   PP_Resource (*Create)(PP_Instance instance_id,
                         const struct PP_Flash_Menu* menu_data);
   PP_Bool (*IsFlashMenu)(PP_Resource resource_id);
 
   // Display a context menu at the given location. If the user selects an item,
   // |selected_id| will be set to its |id| and the callback called with |PP_OK|.
   // If the user dismisses the menu without selecting an item,
   // |PP_ERROR_USERCANCEL| will be indicated.
   int32_t (*Show)(PP_Resource menu_id,
                   const struct PP_Point* location,
                   int32_t* selected_id,
                   struct PP_CompletionCallback callback);
 };
 
+typedef struct PPB_Flash_Menu_0_2 PPB_Flash_Menu;
+
 #endif  // PPAPI_C_PRIVATE_PPB_FLASH_MENU_H_