Add generic text printing

chrome/utility/printing_handler.cc

Index: chrome/utility/printing_handler.cc
diff --git a/chrome/utility/printing_handler.cc b/chrome/utility/printing_handler.cc
index 146ef7a6b1b6e467acd985f86538771dba2b1c37..ff3ca9b9d4e27ee49c9a0321e5ac7828789aefdf 100644
--- a/chrome/utility/printing_handler.cc
+++ b/chrome/utility/printing_handler.cc
@@ -91,6 +91,8 @@ void PrintingHandler::OnRenderPDFPagesToMetafile(
   pdf_rendering_settings_ = settings;
   chrome_pdf::SetPDFUseGDIPrinting(pdf_rendering_settings_.mode ==
                                    PdfRenderSettings::Mode::GDI_TEXT);
+  chrome_pdf::SetPDFUseTextOnlyPrinting(pdf_rendering_settings_.mode ==
+                                        PdfRenderSettings::Mode::TEXTONLY);
   int postscript_level;
   switch (pdf_rendering_settings_.mode) {
     case PdfRenderSettings::Mode::POSTSCRIPT_LEVEL2:
@@ -115,10 +117,12 @@ void PrintingHandler::OnRenderPDFPagesToMetafileGetPage(
     IPC::PlatformFileForTransit output_file) {
   base::File emf_file = IPC::PlatformFileForTransitToFile(output_file);
   float scale_factor = 1.0f;
-  bool postscript = pdf_rendering_settings_.mode ==
-                        PdfRenderSettings::Mode::POSTSCRIPT_LEVEL2 ||
-                    pdf_rendering_settings_.mode ==
-                        PdfRenderSettings::Mode::POSTSCRIPT_LEVEL3;
+  bool postscript =
+      pdf_rendering_settings_.mode ==
+          PdfRenderSettings::Mode::POSTSCRIPT_LEVEL2 ||
+      pdf_rendering_settings_.mode ==
+          PdfRenderSettings::Mode::POSTSCRIPT_LEVEL3 ||
+      pdf_rendering_settings_.mode == PdfRenderSettings::Mode::TEXTONLY;

[Lei Zhang, 2017/07/05 23:27:08]

TEXTONLY is postscript?

[rbpotter, 2017/07/06 01:31:17]

Did this initially to avoid scaling the DC, but then updated the
pdfium side to ignore the DC size entirely and forgot to remove it.

   bool success = RenderPdfPageToMetafile(page_number, std::move(emf_file),
                                          &scale_factor, postscript);
   Send(new ChromeUtilityHostMsg_RenderPDFPagesToMetafiles_PageDone(