--- third_party/pdfium/core/fxcodec/png/png_decoder.h.orig
+++ third_party/pdfium/core/fxcodec/png/png_decoder.h
@@ -9,6 +9,7 @@
 
 #include <memory>
 
+#include "core/fxcodec/fx_codec_def.h"
 #include "core/fxcodec/progressive_decoder_iface.h"
 
 #ifndef PDF_ENABLE_XFA_PNG