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

ppapi/c/dev/ppb_video_layer_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/ppb_video_layer_dev.idl modified Tue Nov 29 11:43:36 2011. */
+/* From dev/ppb_video_layer_dev.idl modified Wed Dec 14 18:08:00 2011. */
 
 #ifndef PPAPI_C_DEV_PPB_VIDEO_LAYER_DEV_H_
 #define PPAPI_C_DEV_PPB_VIDEO_LAYER_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 59 matching lines @@
  * PPB_VideoLayer can be used in two modes:
  *
  * Software Decoding Mode
  * In this mode the video layer needs to be updated with system memory manually
  * using UpdateContent().
  *
  * Hardware Decoding Mode
  * In this mode the content of the video layer is updated by a hardware video
  * decoder.
  */
-struct PPB_VideoLayer_Dev {
+struct PPB_VideoLayer_Dev_0_1 {
   /**
    * Creates a video layer.
    */
   PP_Resource (*Create)(PP_Instance instance, PP_VideoLayerMode_Dev mode);
   /**
    * Returns true if the input parameter is a video layer.
    */
   PP_Bool (*IsVideoLayer)(PP_Resource layer);
   /**
    * Set the pixel format of this video layer. By default it is RGBA.
@@ skipping 49 matching lines @@
    * planes[0] - Y plane
    * planes[1] - U plane, 2x2 subsampled
    * planes[2] - V plane, 2x2 subsampled
    *
    * Return true if successful.
    */
   PP_Bool (*UpdateContent)(PP_Resource layer,
                            uint32_t no_of_planes,
                            const void* planes[]);
 };
+
+typedef struct PPB_VideoLayer_Dev_0_1 PPB_VideoLayer_Dev;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_DEV_PPB_VIDEO_LAYER_DEV_H_ */