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

third_party/WebKit/public/web/WebPrintParams.h

Index: third_party/WebKit/public/web/WebPrintParams.h
diff --git a/third_party/WebKit/public/web/WebPrintParams.h b/third_party/WebKit/public/web/WebPrintParams.h
index a28f836fd9ba7863f2a8a59a28e3093f170b76bc..70a99ce69d5113a731e690df29cf76199bcbffe7 100644
--- a/third_party/WebKit/public/web/WebPrintParams.h
+++ b/third_party/WebKit/public/web/WebPrintParams.h
@@ -51,12 +51,16 @@ struct WebPrintParams {
   // Specifies user selected DPI for printing.
   int printerDPI;
 
+  // Specifies whether to print PDFs as image.
+  bool rasterizePDF;

[dcheng, 2016/12/16 01:44:27]

Consider just writing:

bool rasterizePDF = false;

So we don't have to duplicate it into every initializer list.

[rbpotter, 2016/12/20 22:41:04]

Done.

+
   // Specifies whether to reduce/enlarge/retain the print contents to fit the
   // printable area. (This is used only by plugin printing).
   WebPrintScalingOption printScalingOption;
 
   WebPrintParams()
       : printerDPI(72),
+        rasterizePDF(false),
         printScalingOption(WebPrintScalingOptionFitToPrintableArea) {}
 
   WebPrintParams(const WebSize& paperSize)
@@ -64,6 +68,7 @@ struct WebPrintParams {
         printableArea(WebRect(0, 0, paperSize.width, paperSize.height)),
         paperSize(paperSize),
         printerDPI(72),
+        rasterizePDF(false),
         printScalingOption(WebPrintScalingOptionSourceSize) {}
 
   WebPrintParams(const WebRect& printContentArea,
@@ -75,6 +80,7 @@ struct WebPrintParams {
         printableArea(printableArea),
         paperSize(paperSize),
         printerDPI(printerDPI),
+        rasterizePDF(false),
         printScalingOption(printScalingOption) {}
 };