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

ppapi/c/ppb_graphics_2d.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_graphics_2d.idl modified Wed Aug 24 20:51:38 2011. */
+/* From ppb_graphics_2d.idl modified Wed Oct  5 14:06:02 2011. */
 
 #ifndef PPAPI_C_PPB_GRAPHICS_2D_H_
 #define PPAPI_C_PPB_GRAPHICS_2D_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_completion_callback.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"
@@ skipping 11 matching lines @@
  */
 
 
 /**
  * @addtogroup Interfaces
  * @{
  */
 /**
  * <code>PPB_Graphics2D</code> defines the interface for a 2D graphics context.
  */
-struct PPB_Graphics2D {
+struct PPB_Graphics2D_1_0 {
   /**
    * Create() creates a 2D graphics context. The returned graphics context will
    * not be bound to the module instance on creation (call BindGraphics() on
    * the module instance to bind the returned graphics context to the module
    * instance).
    *
    * @param[in] instance The module instance.
    * @param[in] size The size of the graphic context.
    * @param[in] is_always_opaque Set the <code>is_always_opaque</code> flag to
    * <code>PP_TRUE</code> if you know that you will be painting only opaque
@@ skipping 200 matching lines @@
    * TODO(darin): We should ensure that the completion callback always runs, so
    * that it is easier for consumers to manage memory referenced by a callback.
    */
   /*
    * TODO(): Add back in the synchronous mode description once we have support
    * for it.
    */
   int32_t (*Flush)(PP_Resource graphics_2d,
                    struct PP_CompletionCallback callback);
 };
+
+typedef struct PPB_Graphics2D_1_0 PPB_Graphics2D;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PPB_GRAPHICS_2D_H_ */