[MD History] Add 2-way binding to query state.

chrome/test/data/webui/md_history/history_toolbar_test.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.
 
 cr.define('md_history.history_toolbar_test', function() {
   function registerTests() {
     suite('history-toolbar', function() {
       var app;
       var element;
       var toolbar;
@@ skipping 27 matching lines @@
           // toolbar decreases.
           assertEquals(0, toolbar.count);
           // Ensure that the toolbar boolean states that no items are selected.
           assertFalse(toolbar.itemsSelected_);
         });
       });
 
       test('search term gathered correctly from toolbar', function(done) {
         app.queryState_.queryingDisabled = false;
         registerMessageCallback('queryHistory', this, function (info) {
-          assertEquals(info[0], 'Test');
+          assertEquals('Test', info[0]);
           done();
         });
 
         toolbar.$$('cr-toolbar').fire('search-changed', 'Test');
       });
 
       test('shortcuts to open search field', function() {
         var field = toolbar.$['main-toolbar'].getSearchField();
         assertFalse(field.showingSearch);
 
         MockInteractions.pressAndReleaseKeyOn(
             document.body, 191, '', '/');
         assertTrue(field.showingSearch);
         assertEquals(field.$.searchInput, field.root.activeElement);
 
         MockInteractions.pressAndReleaseKeyOn(
             field.$.searchInput, 27, '', 'Escape');
         assertFalse(field.showingSearch, 'Pressing escape closes field.');
         assertNotEquals(field.$.searchInput, field.root.activeElement);
 
         MockInteractions.pressAndReleaseKeyOn(
             document.body, 70, 'ctrl', 'f');
         assertTrue(field.showingSearch);
         assertEquals(field.$.searchInput, field.root.activeElement);
-     });
+      });
+
+      test('spinner is active on search' , function(done) {
+        app.queryState_.queryingDisabled = false;
+        registerMessageCallback('queryHistory', this, function (info) {
+          assertTrue(toolbar.spinnerActive);
+          app.historyResult(createHistoryInfo(), TEST_HISTORY_RESULTS);
+          assertFalse(toolbar.spinnerActive);
+          done();
+        });
+
+        toolbar.$$('cr-toolbar').fire('search-changed', 'Test2');
+      });
 
       teardown(function() {
         element.historyData_ = [];
         element.searchedTerm = '';
         registerMessageCallback('queryHistory', this, undefined);
         toolbar.count = 0;
       });
     });
   }
   return {
     registerTests: registerTests
   };
 });