Add a "Simplify Page" option to the print preview dialog

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 9b5aa86ec78b4b8ab5b0a06a1bebb194ddb6e82d..228df6b7f26c1d1f462026242d32afa60f12c220 100644
--- a/chrome/browser/resources/print_preview/previewarea/preview_area.js
+++ b/chrome/browser/resources/print_preview/previewarea/preview_area.js
@@ -364,6 +364,10 @@ cr.define('print_preview', function() {
           print_preview.ticket_items.TicketItem.EventType.CHANGE,
           this.onTicketChange_.bind(this));
       this.tracker.add(
+          this.printTicketStore_.printFriendly,
+          print_preview.ticket_items.TicketItem.EventType.CHANGE,
+          this.onTicketChange_.bind(this));
+      this.tracker.add(
           this.printTicketStore_.headerFooter,
           print_preview.ticket_items.TicketItem.EventType.CHANGE,
           this.onTicketChange_.bind(this));