[MD settings] add ripple back to advanced settings menu

chrome/browser/resources/settings/settings_menu/settings_menu.js

Index: chrome/browser/resources/settings/settings_menu/settings_menu.js
diff --git a/chrome/browser/resources/settings/settings_menu/settings_menu.js b/chrome/browser/resources/settings/settings_menu/settings_menu.js
index 494228bfc6e777dd828c4b265df02f957c7dcdbf..dd66609cf9564896c5e422e4788bccdc9ef29f9f 100644
--- a/chrome/browser/resources/settings/settings_menu/settings_menu.js
+++ b/chrome/browser/resources/settings/settings_menu/settings_menu.js
@@ -43,15 +43,15 @@ Polymer({
   },
 
   /**
-   * @param {!Node} target
+   * @param {!Event} event
    * @private
    */
-  ripple_: function(target) {
+  ripple_: function(event) {
     var ripple = document.createElement('paper-ripple');
     ripple.addEventListener('transitionend', function() {
       ripple.remove();
     });
-    target.appendChild(ripple);
+    event.currentTarget.appendChild(ripple);
     ripple.downAction();
     ripple.upAction();
   },
@@ -61,8 +61,6 @@ Polymer({
    * @private
    */
   openPage_: function(event) {
-    this.ripple_(/** @type {!Node} */(event.currentTarget));
-
     var route = settings.getRouteForPath(event.currentTarget.dataset.path);
     assert(route, 'settings-menu has an an entry with an invalid path');
     settings.navigateTo(route);