Adds option to enable CSS backgrounds for printing.

chrome/browser/resources/print_preview/data/ticket_items/css_background.js

Index: chrome/browser/resources/print_preview/data/ticket_items/css_background.js
diff --git a/chrome/browser/resources/print_preview/data/ticket_items/margins_type.js b/chrome/browser/resources/print_preview/data/ticket_items/css_background.js
similarity index 66%
copy from chrome/browser/resources/print_preview/data/ticket_items/margins_type.js
copy to chrome/browser/resources/print_preview/data/ticket_items/css_background.js
index 3fe95f4752db47872d75d281fcab766d59e9d90d..c7428189aaa749b9a2c03482f4c433eb05d5bb9e 100644
--- a/chrome/browser/resources/print_preview/data/ticket_items/margins_type.js
+++ b/chrome/browser/resources/print_preview/data/ticket_items/css_background.js
@@ -6,15 +6,14 @@ cr.define('print_preview.ticket_items', function() {
   'use strict';
 
   /**
-   * Margins type ticket item whose value is a
-   * {@link print_preview.ticket_items.MarginsType.Value} that indicates what
-   * predefined margins type to use.
+   * Ticket item whose value is a {@code boolean} that represents whether to
+   * print CSS backgrounds.
    * @param {!print_preview.DocumentInfo} documentInfo Information about the
    *     document to print.
    * @constructor
    * @extends {print_preview.ticket_items.TicketItem}
    */
-  function MarginsType(documentInfo) {
+  function CssBackground(documentInfo) {
     print_preview.ticket_items.TicketItem.call(this);
 
     /**
@@ -25,19 +24,7 @@ cr.define('print_preview.ticket_items', function() {
     this.documentInfo_ = documentInfo;
   };
 
-  /**
-   * Enumeration of margin types. Matches enum MarginType in
-   * printing/print_job_constants.h.
-   * @enum {number}
-   */
-  MarginsType.Value = {
-    DEFAULT: 0,
-    NO_MARGINS: 1,
-    MINIMUM: 2,
-    CUSTOM: 3
-  };
-
-  MarginsType.prototype = {
+  CssBackground.prototype = {
     __proto__: print_preview.ticket_items.TicketItem.prototype,
 
     /** @override */
@@ -52,17 +39,17 @@ cr.define('print_preview.ticket_items', function() {
 
     /** @override */
     getDefaultValueInternal: function() {
-      return MarginsType.Value.DEFAULT;
+      return false;
     },
 
     /** @override */
     getCapabilityNotAvailableValueInternal: function() {
-      return MarginsType.Value.DEFAULT;
+      return false;
     }
   };
 
   // Export
   return {
-    MarginsType: MarginsType
+    CssBackground: CssBackground
   };
 });