Add Postscript Printing

chrome/utility/printing_handler.h

Index: chrome/utility/printing_handler.h
diff --git a/chrome/utility/printing_handler.h b/chrome/utility/printing_handler.h
index 0d71af261fe6ff24b844c06dc6d7172cbfc80357..9471e00c6f3956919f5808b0d19022b1fd4e3d19 100644
--- a/chrome/utility/printing_handler.h
+++ b/chrome/utility/printing_handler.h
@@ -40,6 +40,13 @@ class PrintingHandler : public UtilityMessageHandler {
       int page_number,
       IPC::PlatformFileForTransit output_file);
   void OnRenderPDFPagesToMetafileStop();
+  void OnRenderPDFPagesToPostScriptStart(
+      IPC::PlatformFileForTransit pdf_transit,
+      const PdfRenderSettings& settings);
+  void OnRenderPDFPagesToPostScriptGetPage(
+      int page_number,
+      IPC::PlatformFileForTransit output_file);
+  void OnRenderPDFPagesToPostScriptStop();
 #endif  // OS_WIN
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   void OnRenderPDFPagesToPWGRaster(IPC::PlatformFileForTransit pdf_transit,
@@ -53,6 +60,7 @@ class PrintingHandler : public UtilityMessageHandler {
   bool RenderPdfPageToMetafile(int page_number,
                                base::File output_file,
                                float* scale_factor);
+  bool RenderPdfPageToPostScript(int page_number, base::File output_file);
 #endif  // OS_WIN
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   bool RenderPDFPagesToPWGRaster(base::File pdf_file,