Add generic text printing

pdf/pdf.h

Index: pdf/pdf.h
diff --git a/pdf/pdf.h b/pdf/pdf.h
index d18489d10535029903797e1985110ceb4e0b7634..8c1d0587907c4d9d7446aa8d4ebee5ff7d31a0af 100644
--- a/pdf/pdf.h
+++ b/pdf/pdf.h
@@ -36,6 +36,14 @@ void PPP_ShutdownModule();
 const void* PPP_GetInterface(const char* interface_name);
 
 #if defined(OS_WIN)
+// Printing modes - type to convert PDF to for printing
+enum PrintingMode {
+  EMF = 0,

[Lei Zhang, 2017/07/13 20:53:16]

Switch to kFoo for new enums?

+  TEXTONLY = 1,
+  POSTSCRIPT2 = 2,
+  POSTSCRIPT3 = 3,
+};
+
 // |pdf_buffer| is the buffer that contains the entire PDF document to be
 //     rendered.
 // |buffer_size| is the size of |pdf_buffer| in bytes.
@@ -83,7 +91,7 @@ void SetPDFEnsureTypefaceCharactersAccessible(
 
 void SetPDFUseGDIPrinting(bool enable);
 
-void SetPDFPostscriptPrintingLevel(int postscript_level);
+void SetPDFUsePrintMode(int mode);
 #endif  // defined(OS_WIN)
 
 // |page_count| and |max_page_width| are optional and can be NULL.