md-settings: Fix back navigation from /resetProfileSettings.

chrome/test/data/webui/md_history/test_util.js

Index: chrome/test/data/webui/md_history/test_util.js
diff --git a/chrome/test/data/webui/md_history/test_util.js b/chrome/test/data/webui/md_history/test_util.js
index 7e4f6777154442503aa3fecade97f888d1249790..85eb24d8266801b35fbaa4c63b273417b3318cc3 100644
--- a/chrome/test/data/webui/md_history/test_util.js
+++ b/chrome/test/data/webui/md_history/test_util.js
@@ -2,19 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-/*
- * Waits for queued up tasks to finish before proceeding. Inspired by:
- * https://github.com/Polymer/web-component-tester/blob/master/browser/environment/helpers.js#L97
- */
-function flush() {
-  Polymer.dom.flush();
-  // Promises have microtask timing, so we use setTimeout to explicity force a
-  // new task.
-  return new Promise(function(resolve, reject) {
-    window.setTimeout(resolve, 0);
-  });
-}
-
 /**
  * Replace the current primary element of the test with a new element. Useful
  * as an alternative to PolymerTest.clearBody() which preserves styling.