Print Preview: Add option to rasterize PDFs and add JPEG compression.

components/printing/renderer/print_web_view_helper.cc

Index: components/printing/renderer/print_web_view_helper.cc
diff --git a/components/printing/renderer/print_web_view_helper.cc b/components/printing/renderer/print_web_view_helper.cc
index e343eef72d49ef5518ae771d499f9e28bfa8d73e..e18c5d7bbe31820952a863b413295b0e0b8eacf2 100644
--- a/components/printing/renderer/print_web_view_helper.cc
+++ b/components/printing/renderer/print_web_view_helper.cc
@@ -285,6 +285,7 @@ void ComputeWebKitPrintParamsInDesiredDpi(
     blink::WebPrintParams* webkit_print_params) {
   int dpi = GetDPI(&print_params);
   webkit_print_params->printerDPI = dpi;
+  webkit_print_params->rasterizePDF = print_params.rasterize_pdf;
   webkit_print_params->printScalingOption = print_params.print_scaling_option;
 
   webkit_print_params->printContentArea.width = ConvertUnit(
@@ -1693,6 +1694,8 @@ bool PrintWebViewHelper::UpdatePrintSettings(
     modified_job_settings.SetInteger(kSettingMarginsType, NO_MARGINS);
     job_settings = &modified_job_settings;
   }
+  bool raster = false;
+  job_settings->GetBoolean(kSettingRasterizePdf, &raster);
 
   // Send the cookie so that UpdatePrintSettings can reuse PrinterQuery when
   // possible.