MD downloads: implement incognito markers

chrome/browser/resources/md_downloads/item.js

 // Copyright 2015 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('downloads', function() {
   var Item = Polymer({
     is: 'downloads-item',
 
     /**
      * @param {!downloads.ThrottledIconLoader} iconLoader
@@ skipping 13 matching lines @@
         type: Boolean,
         value: false,
       },
 
       scrollbarWidth: {
         type: Number,
         value: 0,
         observer: 'onScrollbarWidthChange_',
       },
 
+      /** @private */
       isDangerous_: {type: Boolean, value: false},
 
-      /** Only set when |isDangerous| is true. */
+      /** @private */
+      isIncognito_: {type: Boolean, value: false},
+
+      /**
+       * Only set when |isDangerous| is true.
+       * @private
+       */
       isMalware_: Boolean,
     },
 
     /** @param {!downloads.Data} data */
     update: function(data) {
       assert(!this.id_ || data.id == this.id_);
       this.id_ = data.id;  // This is the only thing saved from |data|.
 
+      this.isIncognito_ = data.otr;
+
       // Danger-independent UI and controls.
       this.ensureTextIs_(this.$.since, data.since_string);
       this.ensureTextIs_(this.$.date, data.date_string);
 
       /** @const */ var noFile =
           data.state == downloads.States.CANCELLED ||
           data.state == downloads.States.INTERRUPTED ||
           data.file_externally_removed;
       this.$.content.classList.toggle('no-file', noFile);
 
@@ skipping 208 matching lines @@
     },
 
     /** @private */
     onShowClick_: function() {
       this.actionService_.show(this.id_);
     },
   });
 
   return {Item: Item};
 });