Add hooks to PDFium PostScript code

pdf/pdfium/pdfium_engine.cc

 // Copyright (c) 2012 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.
 
 #include "pdf/pdfium/pdfium_engine.h"
 
 #include <math.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 4085 matching lines @@
 
 void PDFiumEngineExports::SetPDFEnsureTypefaceCharactersAccessible(
     PDFEnsureTypefaceCharactersAccessible func) {
   FPDF_SetTypefaceAccessibleFunc(
       reinterpret_cast<PDFiumEnsureTypefaceCharactersAccessible>(func));
 }
 
 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(
     const void* pdf_buffer,
     int pdf_buffer_size,
     int page_number,
     const RenderingSettings& settings,
     void* bitmap_buffer) {
   FPDF_DOCUMENT doc =
       FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, nullptr);
@@ skipping 60 matching lines @@
   FPDF_DOCUMENT doc =
       FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, nullptr);
   if (!doc)
     return false;
   bool success = FPDF_GetPageSizeByIndex(doc, page_number, width, height) != 0;
   FPDF_CloseDocument(doc);
   return success;
 }
 
 }  // namespace chrome_pdf