Tunnel the CDD from the Print Preview javascript to the privet operation

chrome/browser/resources/print_preview/native_layer.js

 // Copyright (c) 2012 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.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * An interface to the native Chromium printing system layer.
    * @constructor
@@ skipping 265 matching lines @@
         'previewModifiable': documentInfo.isModifiable,
         'printToPDF': destination.id ==
             print_preview.Destination.GooglePromotedId.SAVE_AS_PDF,
         'printWithCloudPrint': !destination.isLocal,
         'printWithPrivet': destination.isPrivet,
         'deviceName': destination.id,
         'isFirstRequest': false,
         'requestID': -1,
         'fitToPageEnabled': printTicketStore.fitToPage.getValue(),
         'pageWidth': documentInfo.pageSize.width,
-        'pageHeight': documentInfo.pageSize.height,
+        'pageHeight': documentInfo.pageSize.height
       };
 
       if (!destination.isLocal) {
         // We can't set cloudPrintID if the destination is "Print with Cloud
         // Print" because the native system will try to print to Google Cloud
         // Print with this ID instead of opening a Google Cloud Print dialog.
         ticket['cloudPrintID'] = destination.id;
       }
 
       if (printTicketStore.marginsType.isCapabilityAvailable() &&
           printTicketStore.marginsType.isValueEqual(
               print_preview.ticket_items.MarginsType.Value.CUSTOM)) {
         var customMargins = printTicketStore.customMargins.getValue();
         var orientationEnum =
             print_preview.ticket_items.CustomMargins.Orientation;
         ticket['marginsCustom'] = {
           'marginTop': customMargins.get(orientationEnum.TOP),
           'marginRight': customMargins.get(orientationEnum.RIGHT),
           'marginBottom': customMargins.get(orientationEnum.BOTTOM),
           'marginLeft': customMargins.get(orientationEnum.LEFT)
         };
       }
 
       if (destination.isPrivet) {
         ticket['ticket'] = printTicketStore.createPrintTicket(destination);
+        ticket['capabilities'] = JSON.stringify(destination.capabilities);
       }
 
       if (opt_isOpenPdfInPreview) {
         ticket['OpenPDFInPreview'] = true;
       }
 
       chrome.send('print', [JSON.stringify(ticket)]);
     },
 
     /** Requests that the current pending print request be cancelled. */
@@ skipping 524 matching lines @@
       return this.serializedAppStateStr_;
     }
   };
 
   // Export
   return {
     NativeInitialSettings: NativeInitialSettings,
     NativeLayer: NativeLayer
   };
 });