MD Settings: Implement search URLs.

chrome/test/data/webui/cr_elements/cr_toolbar_search_field_tests.js

 // Copyright 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.
 
 /** @fileoverview Suite of tests for cr-toolbar-search-field. */
 cr.define('cr_toolbar_search_field', function() {
   function registerTests() {
     suite('cr-toolbar-search-field', function() {
       /** @type {?CrToolbarSearchFieldElement} */
       var field = null;
@@ skipping 92 matching lines @@
         MockInteractions.tap(field);
         field.setValue('foo');
         field.setValue('');
         field.setValue('bar');
         // Expecting identical query to be ignored.
         field.setValue('bar');
         field.setValue('baz');
         assertEquals(['foo', '', 'bar', 'baz'].join(), searches.join());
       });
 
+      test('does not notify on setValue with noEvent=true', function() {
+        MockInteractions.tap(field);
+        field.setValue('foo', true);
+        field.setValue('bar');
+        field.setValue('baz', true);
+        assertEquals(['bar'].join(), searches.join());
+      });
+
       // Tests that calling setValue() from within a 'search-changed' callback
       // does not result in an infinite loop.
       test('no infinite loop', function() {
         var counter = 0;
         field.addEventListener('search-changed', function(event) {
           counter++;
           // Calling setValue() with the already existing value should not
           // trigger another 'search-changed' event.
           field.setValue(event.detail);
         });
@@ skipping 23 matching lines @@
         assertFalse(clearSearch.hidden);
         assertTrue(field.showingSearch);
       });
     });
   }
 
   return {
     registerTests: registerTests,
   };
 });