fix corpus tests

core/fpdfapi/render/cpdf_renderstatus.h

Index: core/fpdfapi/render/cpdf_renderstatus.h
diff --git a/core/fpdfapi/render/cpdf_renderstatus.h b/core/fpdfapi/render/cpdf_renderstatus.h
index b7e9fa6d0aa78ce4530a4f2e0cf34c5bc04c902d..f74f0ce9ae4803899230b66e4c643b9e38a5afd9 100644
--- a/core/fpdfapi/render/cpdf_renderstatus.h
+++ b/core/fpdfapi/render/cpdf_renderstatus.h
@@ -66,6 +66,10 @@ class CPDF_RenderStatus {
   void DebugVerifyDeviceIsPreMultiplied() const;
 #endif
 
+#if defined _SKIA_SUPPORT_PATHS_
+  void UnPreMultiplyDevice();
+#endif
+
   CPDF_RenderOptions m_Options;
   CPDF_Dictionary* m_pFormResource;
   CPDF_Dictionary* m_pPageResource;