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

chrome/browser/resources/print_preview/previewarea/preview_area.js

Index: chrome/browser/resources/print_preview/previewarea/preview_area.js
diff --git a/chrome/browser/resources/print_preview/previewarea/preview_area.js b/chrome/browser/resources/print_preview/previewarea/preview_area.js
index b96dfaeac06dd975ff136c9a41f2eed180e40442..b1272b114c3b753d9202f976099ed099e7385c2a 100644
--- a/chrome/browser/resources/print_preview/previewarea/preview_area.js
+++ b/chrome/browser/resources/print_preview/previewarea/preview_area.js
@@ -373,6 +373,11 @@ cr.define('print_preview', function() {
           this.printTicketStore_.scaling,
           print_preview.ticket_items.TicketItem.EventType.CHANGE,
           this.onTicketChange_.bind(this));
+      this.tracker.add(
+          this.printTicketStore_.rasterize,
+          print_preview.ticket_items.TicketItem.EventType.CHANGE,
+          this.onTicketChange_.bind(this));
+
 
       if (this.checkPluginCompatibility_()) {
         this.previewGenerator_ = new print_preview.PreviewGenerator(
@@ -515,7 +520,6 @@ cr.define('print_preview', function() {
         console.warn('Pdf preview plugin already created');
         return;
       }
-
       this.plugin_ = /** @type {print_preview.PDFPlugin} */(
           PDFCreateOutOfProcessPlugin(srcUrl));
       this.plugin_.setKeyEventCallback(this.keyEventCallback_);