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

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

+// Copyright (c) 2016 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.ticket_items', function() {
+  'use strict';
+
+  /**
+   * Rasterize ticket item whose value is a {@code boolean} that indicates
+   * whether the PDF document should be rendered as images.
+   * @constructor
+   * @param {!print_preview.DocumentInfo} documentInfo Information about the
+   *     document to print, used to determine if document is a PDF.
+   * @extends {print_preview.ticket_items.TicketItem}
+   */
+  function Rasterize(destinationStore, documentInfo) {
+    print_preview.ticket_items.TicketItem.call(
+        this, null /* appState */, null /* field */,
+        null /* destinationStore */, documentInfo);
+  };
+
+  Rasterize.prototype = {
+    __proto__: print_preview.ticket_items.TicketItem.prototype,
+
+    /** @override */
+    wouldValueBeValid: function(value) {
+      return true;
+    },
+
+    /** @override */
+    isCapabilityAvailable: function() {
+      return !this.getDocumentInfoInternal().isModifiable;
+    },
+
+    /** @override */
+    getDefaultValueInternal: function() {
+      return false;
+    },
+
+    /** @override */
+    getCapabilityNotAvailableValueInternal: function() {
+      return this.getDefaultValueInternal();
+    }
+  };
+
+  // Export
+  return {
+    Rasterize: Rasterize
+  };
+});