Fix layering violation in CPDF_Document::FromFPDFDocument().

fpdfsdk/src/fpdfeditimg.cpp

Index: fpdfsdk/src/fpdfeditimg.cpp
diff --git a/fpdfsdk/src/fpdfeditimg.cpp b/fpdfsdk/src/fpdfeditimg.cpp
index ef0576b6027cbc657ff92b5c6acf6f77c46850ca..0c8ea1627a99ed04599f19c51ae17d17a12f9d07 100644
--- a/fpdfsdk/src/fpdfeditimg.cpp
+++ b/fpdfsdk/src/fpdfeditimg.cpp
@@ -9,7 +9,7 @@
 
 DLLEXPORT FPDF_PAGEOBJECT STDCALL
 FPDFPageObj_NewImgeObj(FPDF_DOCUMENT document) {
-  CPDF_Document* pDoc = CPDF_Document::FromFPDFDocument(document);
+  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
   if (!pDoc)
     return nullptr;
   CPDF_ImageObject* pImageObj = new CPDF_ImageObject;