MD Settings: make chrome://[md-]settings/clearBrowserData URL work

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

Index: chrome/test/data/webui/settings/privacy_page_test.js
diff --git a/chrome/test/data/webui/settings/privacy_page_test.js b/chrome/test/data/webui/settings/privacy_page_test.js
index 4bc41793f60f461211bb4401adead7c494d49522..647c8ace6503dc119da7751e27b125d08fa5ca62 100644
--- a/chrome/test/data/webui/settings/privacy_page_test.js
+++ b/chrome/test/data/webui/settings/privacy_page_test.js
@@ -70,6 +70,10 @@ cr.define('settings_privacy_page', function() {
       /** @type {SettingsPrivacyPageElement} */
       var page;
 
+      suiteSetup(function() {
+        settings.main.rendered = Promise.resolve();
+      });
+
       setup(function() {
         testBrowserProxy = new TestPrivacyPageBrowserProxy();
         settings.PrivacyPageBrowserProxyImpl.instance_ = testBrowserProxy;