Add hooks to PDFium PostScript code

pdf/pdf.h

 // Copyright (c) 2010 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.
 
 #ifndef PDF_PDF_H_
 #define PDF_PDF_H_
 
 #include "ppapi/c/ppb.h"
 #include "ppapi/cpp/module.h"
 
@@ skipping 64 matching lines @@
                        bool fit_to_bounds,
                        bool stretch_to_bounds,
                        bool keep_aspect_ratio,
                        bool center_in_bounds,
                        bool autorotate);
 
 void SetPDFEnsureTypefaceCharactersAccessible(
     PDFEnsureTypefaceCharactersAccessible func);
 
 void SetPDFUseGDIPrinting(bool enable);
+
+void SetPDFPostscriptPrintingLevel(int postscript_level);
 #endif  // defined(OS_WIN)
 
 // |page_count| and |max_page_width| are optional and can be NULL.
 // Returns false if the document is not valid.
 bool GetPDFDocInfo(const void* pdf_buffer,
                    int buffer_size,
                    int* page_count,
                    double* max_page_width);
 
 // Gets the dimensions of a specific page in a document.
@@ skipping 28 matching lines @@
                            int page_number,
                            void* bitmap_buffer,
                            int bitmap_width,
                            int bitmap_height,
                            int dpi,
                            bool autorotate);
 
 }  // namespace chrome_pdf
 
 #endif  // PDF_PDF_H_