MD Settings: show restart button when user toggles metrics reporting

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

Index: chrome/test/data/webui/settings/metrics_reporting_tests.js
diff --git a/chrome/test/data/webui/settings/metrics_reporting_tests.js b/chrome/test/data/webui/settings/metrics_reporting_tests.js
index 5ee30c769e07aa7bb25719c51f917535e1bf1ba7..1c612a7bc5b081f94fcbcd55f3640f87a594f061 100644
--- a/chrome/test/data/webui/settings/metrics_reporting_tests.js
+++ b/chrome/test/data/webui/settings/metrics_reporting_tests.js
@@ -21,6 +21,7 @@ suite('metrics reporting', function() {
   test('changes to whether metrics reporting is enabled/managed', function() {
     return testBrowserProxy.whenCalled('getMetricsReporting').then(function() {
       Polymer.dom.flush();
+      assertFalse(!!page.$$('#metricsReporting paper-button'));
 
       var checkbox = page.$.metricsReportingCheckbox;
       assertEquals(testBrowserProxy.metricsReporting.enabled, checkbox.checked);
@@ -34,6 +35,8 @@ suite('metrics reporting', function() {
       cr.webUIListenerCallback('metrics-reporting-change', changedMetrics);
       Polymer.dom.flush();
 
+      assertTrue(!!page.$$('#metricsReporting paper-button'));
+
       assertEquals(changedMetrics.enabled, checkbox.checked);
       indicatorVisible = !!page.$$('#indicator');
       assertEquals(changedMetrics.managed, indicatorVisible);
@@ -42,6 +45,8 @@ suite('metrics reporting', function() {
 
       MockInteractions.tap(checkbox);
       return testBrowserProxy.whenCalled('setMetricsReportingEnabled', toggled);
+    }).then(function() {
+      assertTrue(!!page.$$('#metricsReporting paper-button'));
     });
   });
 });