MD Settings: make blowing away per-origin data (i.e. cookies) easier

chrome/test/data/webui/settings/site_data_test.js

+// Copyright 2017 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.
+
+suite('<site-data>', function() {
+  /** @type {SiteDataElement} */
+  var siteData;
+
+  /** @type {TestSiteSettingsPrefsBrowserProxy} */
+  var testBrowserProxy;
+
+  setup(function() {
+    testBrowserProxy = new TestSiteSettingsPrefsBrowserProxy;
+    settings.SiteSettingsPrefsBrowserProxyImpl.instance_ = testBrowserProxy;
+    siteData = document.createElement('site-data');
+  });
+
+  test('tapping remove button (trash can) calls remove on origin', function() {
+    var GOOGLE_ID = '1';
+    siteData.sites = [{site: 'Google', id: GOOGLE_ID, localData: 'Cookiez!'}];
+    Polymer.dom.flush();
+
+    MockInteractions.tap(siteData.$$('.remove-site'));
+
+    return testBrowserProxy.whenCalled('removeCookie').then(function(path) {
+      assertEquals(GOOGLE_ID, path);
+    });
+  });
+});