Add generic text printing

chrome/browser/printing/print_view_manager_base.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/printing/print_view_manager_base.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 171 matching lines @@
 
 #if defined(OS_WIN)
   print_job_->AppendPrintedPage(params.page_number);
   if (metafile_must_be_valid) {
     scoped_refptr<base::RefCountedBytes> bytes = new base::RefCountedBytes(
         reinterpret_cast<const unsigned char*>(shared_buf->memory()),
         params.data_size);
     document->DebugDumpData(bytes.get(), FILE_PATH_LITERAL(".pdf"));
 
     const auto& settings = document->settings();
-    if ((settings.printer_is_ps2() || settings.printer_is_ps3()) &&
-        !base::FeatureList::IsEnabled(features::kDisablePostScriptPrinting)) {
+    if (settings.printer_is_textonly()) {
+      print_job_->StartPdfToTextConversion(bytes, params.page_size);
+    } else if ((settings.printer_is_ps2() || settings.printer_is_ps3()) &&
+               !base::FeatureList::IsEnabled(
+                   features::kDisablePostScriptPrinting)) {
       print_job_->StartPdfToPostScriptConversion(bytes, params.content_area,
                                                  params.physical_offsets,
                                                  settings.printer_is_ps2());
     } else {
       // TODO(thestig): Figure out why rendering text with GDI results in random
       // missing characters for some users. https://crbug.com/658606
       // Update : The missing letters seem to have been caused by the same
       // problem as https://crbug.com/659604 which was resolved. GDI printing
       // seems to work with the fix for this bug applied.
       bool print_text_with_gdi = settings.print_text_with_gdi() &&
@@ skipping 374 matching lines @@
       BrowserThread::IO, FROM_HERE,
       base::BindOnce(&PrinterQuery::StopWorker, printer_query));
 }
 
 void PrintViewManagerBase::SendPrintingEnabled(bool enabled,
                                                content::RenderFrameHost* rfh) {
   rfh->Send(new PrintMsg_SetPrintingEnabled(rfh->GetRoutingID(), enabled));
 }
 
 }  // namespace printing