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

webkit/plugins/ppapi/ppb_graphics_2d_impl.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.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_PPB_GRAPHICS_2D_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_GRAPHICS_2D_IMPL_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/ppb_graphics_2d.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/thunk/ppb_graphics_2d_api.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebCanvas.h"
 
-struct PPB_Graphics2D;
-
 namespace gfx {
 class Rect;
 }
 
 namespace webkit {
 namespace ppapi {
 
 class PPB_ImageData_Impl;
 class PluginInstance;
 
@@ skipping 146 matching lines @@
 
   base::WeakPtrFactory<PPB_Graphics2D_Impl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Graphics2D_Impl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_GRAPHICS_2D_IMPL_H_