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

ppapi/c/dev/ppp_printing_dev.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 dev/ppp_printing_dev.idl modified Thu Nov 17 13:26:05 2011. */
+/* From dev/ppp_printing_dev.idl modified Fri Nov 18 15:58:00 2011. */
 
 #ifndef PPAPI_C_DEV_PPP_PRINTING_DEV_H_
 #define PPAPI_C_DEV_PPP_PRINTING_DEV_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_point.h"
 #include "ppapi/c/pp_rect.h"
 #include "ppapi/c/pp_resource.h"
@@ skipping 56 matching lines @@
 };
 PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_PrintPageNumberRange_Dev, 8);
 /**
  * @}
  */
 
 /**
  * @addtogroup Interfaces
  * @{
  */
-struct PPP_Printing_Dev {
+struct PPP_Printing_Dev_0_5 {
   /**
    *  Returns a bit field representing the supported print output formats.  For
    *  example, if only Raster and PostScript are supported,
    *  QuerySupportedFormats returns a value equivalent to:
    *  (PP_PRINTOUTPUTFORMAT_RASTER | PP_PRINTOUTPUTFORMAT_POSTSCRIPT)
    */
   uint32_t (*QuerySupportedFormats)(PP_Instance instance);
   /**
    * Begins a print session with the given print settings. Calls to PrintPage
    * can only be made after a successful call to Begin. Returns the number of
@@ skipping 14 matching lines @@
       const struct PP_PrintPageNumberRange_Dev* page_ranges,
       uint32_t page_range_count);
   /** Ends the print session. Further calls to PrintPage will fail. */
   void (*End)(PP_Instance instance);
   /**
    *  Returns true if the current content should be printed into the full page
    *  and not scaled down to fit within the printer's printable area.
    */
   PP_Bool (*IsScalingDisabled)(PP_Instance instance);
 };
+
+typedef struct PPP_Printing_Dev_0_5 PPP_Printing_Dev;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_DEV_PPP_PRINTING_DEV_H_ */