Adds option to enable CSS backgrounds for printing.

chrome/browser/resources/print_preview/preview_generator.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';
 
   /**
    * Interface to the Chromium print preview generator.
    * @param {!print_preview.DestinationStore} destinationStore Used to get the
@@ skipping 73 matching lines @@
     this.pageNumberSet_ = null;
 
     /**
      * Margins type used to generate the last preview.
      * @type {!print_preview.ticket_items.MarginsType.Value}
      * @private
      */
     this.marginsType_ = print_preview.ticket_items.MarginsType.Value.DEFAULT;
 
     /**
+     * Whether the document should have element CSS backgrounds printed.
+     * @type {boolean}
+     * @private
+     */
+    this.isCssBackgroundEnabled_ = false;
+
+    /**
      * Destination that was selected for the last preview.
      * @type {print_preview.Destination}
      * @private
      */
     this.selectedDestination_ = null;
 
     /**
      * Event tracker used to keep track of native layer events.
      * @type {!EventTracker}
      * @private
@@ skipping 42 matching lines @@
         this.marginsType_ = this.printTicketStore_.getMarginsType();
         return false;
       }
       this.isLandscapeEnabled_ = this.printTicketStore_.isLandscapeEnabled();
       this.isHeaderFooterEnabled_ =
           this.printTicketStore_.isHeaderFooterEnabled();
       this.isColorEnabled_ = this.printTicketStore_.isColorEnabled();
       this.isFitToPageEnabled_ = this.printTicketStore_.isFitToPageEnabled();
       this.pageNumberSet_ = this.printTicketStore_.getPageNumberSet();
       this.marginsType_ = this.printTicketStore_.getMarginsType();
+      this.isCssBackgroundEnabled_ =
+          this.printTicketStore_.isCssBackgroundEnabled();
       this.selectedDestination_ = this.destinationStore_.selectedDestination;
 
       this.inFlightRequestId_++;
       this.nativeLayer_.startGetPreview(
           this.destinationStore_.selectedDestination,
           this.printTicketStore_,
           this.inFlightRequestId_);
       return true;
     },
 
@@ skipping 83 matching lines @@
           ticketStore.isColorEnabled() != this.isColorEnabled_ ||
           ticketStore.isFitToPageEnabled() != this.isFitToPageEnabled_ ||
           !ticketStore.getPageNumberSet().equals(this.pageNumberSet_) ||
           (ticketStore.getMarginsType() != this.marginsType_ &&
               ticketStore.getMarginsType() !=
                   print_preview.ticket_items.MarginsType.Value.CUSTOM) ||
           (ticketStore.getMarginsType() ==
               print_preview.ticket_items.MarginsType.Value.CUSTOM &&
               !ticketStore.getCustomMargins().equals(
                   ticketStore.getDocumentMargins())) ||
+          (ticketStore.isCssBackgroundEnabled() !=
+              this.isCssBackgroundEnabled_) ||
           (this.selectedDestination_ !=
               this.destinationStore_.selectedDestination);
     },
 
     /**
      * Called when the page layout of the document is ready. Always occurs
      * as a result of a preview request.
      * @param {cr.Event} event Contains layout info about the document.
      * @private
      */
@@ skipping 110 matching lines @@
       // current one.
       cr.dispatchSimpleEvent(this, PreviewGenerator.EventType.FAIL);
     }
   };
 
   // Export
   return {
     PreviewGenerator: PreviewGenerator
   };
 });