MD Settings: Search engines, use favicon cache.

chrome/browser/resources/settings/search_engines_page/search_engine_entry.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.
 
 /**
  * @fileoverview 'settings-search-engine-entry' is a component for showing a
  * search engine with its name, domain and query URL.
  */
 Polymer({
   is: 'settings-search-engine-entry',
@@ skipping 53 matching lines @@
   /** @private */
   onMakeDefaultTap_: function() {
     this.closePopupMenu_();
     this.browserProxy_.setDefaultSearchEngine(this.engine.modelIndex);
   },
 
   /** @private */
   closePopupMenu_: function() {
     this.$$('iron-dropdown').close();
   },
+
+  /**
+   * @param {?string} url The icon URL if available.
+   * @return {string} A set of icon URLs.
+   * @private
+   */
+  getIconSet_: function(url) {
+    // Force default icon, if no |engine.iconURL| is available.
+    return getFaviconImageSet(url || '');
+  },
 });