Add hooks to PDFium PostScript code

pdf/pdfium/pdfium_engine.cc

Index: pdf/pdfium/pdfium_engine.cc
diff --git a/pdf/pdfium/pdfium_engine.cc b/pdf/pdfium/pdfium_engine.cc
index 111ea87135e6dea30ab3a9d194b709fdb44f2993..3e8f5b4971c7882edaeda36a2909ca6df1915483 100644
--- a/pdf/pdfium/pdfium_engine.cc
+++ b/pdf/pdfium/pdfium_engine.cc
@@ -4103,6 +4103,12 @@ void PDFiumEngineExports::SetPDFEnsureTypefaceCharactersAccessible(
 void PDFiumEngineExports::SetPDFUseGDIPrinting(bool enable) {
   FPDF_SetPrintTextWithGDI(enable);
 }
+
+void PDFiumEngineExports::SetPDFPostscriptPrintingLevel(
+    int postscript_level) {
+  FPDF_SetPrintPostscriptLevel(postscript_level);
+}
+
 #endif  // defined(OS_WIN)
 
 bool PDFiumEngineExports::RenderPDFPageToBitmap(