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

ppapi/c/ppb_file_system.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.
  */
 
-/* From ppb_file_system.idl modified Mon Aug 29 10:11:34 2011. */
+/* From ppb_file_system.idl modified Wed Oct  5 14:06:02 2011. */
 
 #ifndef PPAPI_C_PPB_FILE_SYSTEM_H_
 #define PPAPI_C_PPB_FILE_SYSTEM_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_file_info.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_stdint.h"
 
 #define PPB_FILESYSTEM_INTERFACE_1_0 "PPB_FileSystem;1.0"
 #define PPB_FILESYSTEM_INTERFACE PPB_FILESYSTEM_INTERFACE_1_0
 
 /**
  * @file
  * This file defines the API to create a file system associated with a file.
  */
 
 
 /**
  * @addtogroup Interfaces
  * @{
  */
 /**
  * The <code>PPB_FileSystem</code> struct identifies the file system type
  * associated with a file.
  */
-struct PPB_FileSystem {
+struct PPB_FileSystem_1_0 {
   /** Create() creates a file system object of the given type.
    *
    * @param[in] instance A <code>PP_Instance</code> identifying the instance
    * with the file.
    * @param[in] type A file system type as defined by
    * <code>PP_FileSystemType</code> enum.
    *
    * @return A <code>PP_Resource</code> corresponding to a file system if
    * successful.
    */
@@ skipping 33 matching lines @@
    * @param[in] file_system A <code>PP_Resource</code> corresponding to a file
    * system.
    *
    * @return A <code>PP_FileSystemType</code> with the file system type if
    * valid or <code>PP_FILESYSTEMTYPE_INVALID</code> if the provided resource
    * is not a valid file system. It is valid to call this function even before
    * Open() completes.
    */
   PP_FileSystemType (*GetType)(PP_Resource file_system);
 };
+
+typedef struct PPB_FileSystem_1_0 PPB_FileSystem;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PPB_FILE_SYSTEM_H_ */