MD History: Use one-way binding for history query state.

chrome/test/data/webui/md_history/history_metrics_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.
 
 /**
  * @constructor
  * @extends {md_history.BrowserService}
  */
 var TestMetricsBrowserService = function() {
   this.histogramMap = {};
@@ skipping 58 matching lines @@
     var histogram = histogramMap['History.HistoryPageView'];
     assertEquals(1, histogram[HistoryPageViewHistogram.HISTORY]);
 
     app.selectedPage_ = 'syncedTabs';
     assertEquals(1, histogram[HistoryPageViewHistogram.SIGNIN_PROMO]);
     updateSignInState(true);
     return PolymerTest.flushTasks().then(() => {
       assertEquals(1, histogram[HistoryPageViewHistogram.SYNCED_TABS]);
       app.selectedPage_ = 'history';
       assertEquals(2, histogram[HistoryPageViewHistogram.HISTORY]);
-      app.set('queryState_.range', HistoryRange.WEEK);
+      app.fire('change-query', {range: HistoryRange.WEEK});
       assertEquals(1, histogram[HistoryPageViewHistogram.GROUPED_WEEK]);
-      app.set('queryState_.range', HistoryRange.MONTH);
+      app.fire('change-query', {range: HistoryRange.MONTH});
       assertEquals(1, histogram[HistoryPageViewHistogram.GROUPED_MONTH]);
     });
   });
 
   test('history-list', function() {
     var historyEntry =
         createHistoryEntry('2015-01-01', 'http://www.google.com');
     historyEntry.starred = true;
     app.historyResult(createHistoryInfo(), [
       createHistoryEntry('2015-01-01', 'http://www.example.com'),
       historyEntry
     ]);
 
     return PolymerTest.flushTasks().then(() => {
       var items = polymerSelectAll(
           app.$.history.$['infinite-list'], 'history-item');
       MockInteractions.tap(items[1].$$('#bookmark-star'));
       assertEquals(1, actionMap['BookmarkStarClicked']);
       MockInteractions.tap(items[1].$.title);
       assertEquals(1, actionMap['EntryLinkClick']);
       assertEquals(1, histogramMap['HistoryPage.ClickPosition'][1]);
       assertEquals(1, histogramMap['HistoryPage.ClickPositionSubset'][1]);
 
-      app.set('queryState_.searchTerm', 'goog');
+      app.fire('change-query', {search: 'goog'});
       assertEquals(1, actionMap['Search']);
       app.set('queryState_.incremental', true);
       app.historyResult(createHistoryInfo('goog'), [
         createHistoryEntry('2015-01-01', 'http://www.google.com'),
         createHistoryEntry('2015-01-01', 'http://www.google.com'),
         createHistoryEntry('2015-01-01', 'http://www.google.com')
       ]);
       return PolymerTest.flushTasks();
     }).then(() => {
       items = polymerSelectAll(
@@ skipping 76 matching lines @@
       assertEquals(1, histogram[SyncedTabsHistogram.OPEN_ALL]);
 
       MockInteractions.tap(menuButton);
       return PolymerTest.flushTasks();
     }).then(() => {
       MockInteractions.tap(app.$$('#synced-devices').$$('#menuDeleteButton'));
       assertEquals(1, histogram[SyncedTabsHistogram.HIDE_FOR_NOW]);
     });
   });
 });