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

ppapi/c/ppb_var.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_var.idl modified Tue Dec  6 11:26:58 2011. */
+/* From ppb_var.idl modified Wed Dec 14 18:08:00 2011. */
 
 #ifndef PPAPI_C_PPB_VAR_H_
 #define PPAPI_C_PPB_VAR_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_module.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_var.h"
 
 #define PPB_VAR_INTERFACE_1_0 "PPB_Var;1.0"
 #define PPB_VAR_INTERFACE_1_1 "PPB_Var;1.1"
 #define PPB_VAR_INTERFACE PPB_VAR_INTERFACE_1_1
 
 /**
  * @file
  * This file defines the <code>PPB_Var</code> struct.
  */
 
 
 /**
  * @addtogroup Interfaces
  * @{
  */
 /**
  * PPB_Var API
  */
-struct PPB_Var {
+struct PPB_Var_1_1 {
   /**
    * AddRef() adds a reference to the given var. If this is not a refcounted
    * object, this function will do nothing so you can always call it no matter
    * what the type.
    *
    * @param[in] var A <code>PP_Var</code> that will have a reference added.
    */
   void (*AddRef)(struct PP_Var var);
   /**
    * Release() removes a reference to given var, deleting it if the internal
@@ skipping 43 matching lines @@
    * pointer will be to arbitrary memory.
    *
    * @param[in] var A PP_Var struct containing a string-type var.
    * @param[in,out] len A pointer to the length of the string-type var.
    *
    * @return A char* encoded in UTF-8.
    */
   const char* (*VarToUtf8)(struct PP_Var var, uint32_t* len);
 };
 
+typedef struct PPB_Var_1_1 PPB_Var;
+
 struct PPB_Var_1_0 {
   void (*AddRef)(struct PP_Var var);
   void (*Release)(struct PP_Var var);
   struct PP_Var (*VarFromUtf8)(PP_Module module,
                                const char* data,
                                uint32_t len);
   const char* (*VarToUtf8)(struct PP_Var var, uint32_t* len);
 };
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PPB_VAR_H_ */