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 99b6eeb6a28399e4077c254a037585b70c3efe14..5030b5fc42b782aaca9972ab570a1f79281899a3 100644
--- a/chrome/utility/printing_handler.h
+++ b/chrome/utility/printing_handler.h
@@ -35,26 +35,33 @@ class PrintingHandler : public UtilityMessageHandler {
   // IPC message handlers.
 #if defined(OS_WIN)
   void OnRenderPDFPagesToMetafile(IPC::PlatformFileForTransit pdf_transit,
-                                  const PdfRenderSettings& settings,
-                                  bool print_text_with_gdi);
+                                  const PdfRenderSettings& settings);
   void OnRenderPDFPagesToMetafileGetPage(
       int page_number,
       IPC::PlatformFileForTransit output_file);
   void OnRenderPDFPagesToMetafileStop();
-#endif  // OS_WIN
+  void OnRenderPDFPagesToPostScriptStart(
+      IPC::PlatformFileForTransit pdf_transit,
+      const PdfRenderSettings& settings);
+  void OnRenderPDFPagesToPostScriptGetPage(
+      int page_number,
+      IPC::PlatformFileForTransit output_file);
+  void OnRenderPDFPagesToPostScriptStop();
+#endif
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   void OnRenderPDFPagesToPWGRaster(IPC::PlatformFileForTransit pdf_transit,
                                    const PdfRenderSettings& settings,
                                    const PwgRasterSettings& bitmap_settings,
                                    IPC::PlatformFileForTransit bitmap_transit);
-#endif  // ENABLE_PRINT_PREVIEW

[dsinclair, 2017/01/17 17:10:00]

Why remove the comments?

+#endif
 
 #if defined(OS_WIN)
   int LoadPDF(base::File pdf_file);
   bool RenderPdfPageToMetafile(int page_number,
                                base::File output_file,
                                float* scale_factor);
-#endif  // OS_WIN
+  bool RenderPdfPageToPostScript(int page_number, base::File output_file);
+#endif
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   bool RenderPDFPagesToPWGRaster(base::File pdf_file,
                                  const PdfRenderSettings& settings,
@@ -63,7 +70,7 @@ class PrintingHandler : public UtilityMessageHandler {
 
   void OnGetPrinterCapsAndDefaults(const std::string& printer_name);
   void OnGetPrinterSemanticCapsAndDefaults(const std::string& printer_name);
-#endif  // ENABLE_PRINT_PREVIEW
+#endif
 
 #if defined(OS_WIN)
   std::vector<char> pdf_data_;