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

ppapi/c/dev/ppb_char_set_dev.h

 /* Copyright (c) 2010 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_DEV_PPB_CHAR_SET_DEV_H_
 #define PPAPI_C_DEV_PPB_CHAR_SET_DEV_H_
 
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_stdint.h"
@@ skipping 17 matching lines @@
 
   // Replaces the error or unrepresentable character with a substitution
   // character. When converting to a Unicode character set (UTF-8 or UTF-16)
   // it will use the unicode "substitution character" U+FFFD. When converting
   // to another character set, the character will be charset-specific. For
   // many languages this will be the representation of the '?' character.
   PP_CHARSET_CONVERSIONERROR_SUBSTITUTE
 };
 PP_COMPILE_ASSERT_ENUM_SIZE_IN_BYTES(PP_CharSet_ConversionError, 4);
 
-struct PPB_CharSet_Dev {
+struct PPB_CharSet_Dev_0_4 {
   // Converts the UTF-16 string pointed to in |*utf16| to an 8-bit string in the
   // specified code page. |utf16_len| is measured in UTF-16 units, not bytes.
   // This value may not be NULL.
   //
   // The return value is a NULL-terminated 8-bit string corresponding to the
   // new character set, or NULL on failure. THIS STRING MUST BE FREED USING
   // PPB_Core::MemFree(). The length of the returned string, not including the
   // terminating NULL, will be placed into *output_length. When there is no
   // error, the result will always be non-NULL, even if the output is 0-length.
   // In this case, it will only contain the terminator. You must still call
@@ skipping 24 matching lines @@
 
   // Returns a string var representing the current multi-byte character set of
   // the current system.
   //
   // WARNING: You really shouldn't be using this function unless you're dealing
   // with legacy data. You should be using UTF-8 or UTF-16 and you don't have
   // to worry about the character sets.
   struct PP_Var (*GetDefaultCharSet)(PP_Instance instance);
 };
 
+typedef struct PPB_CharSet_Dev_0_4 PPB_CharSet_Dev;
+
 #endif  /* PPAPI_C_DEV_PPB_CHAR_SET_DEV_H_ */
-