Update more-routing for md-settings

third_party/polymer/v0_8/components-chromium/more-routing/more-route-selector-extracted.js

Index: third_party/polymer/v0_8/components-chromium/more-routing/more-route-selector-extracted.js
diff --git a/third_party/polymer/v0_8/components-chromium/more-routing/more-route-selector-extracted.js b/third_party/polymer/v0_8/components-chromium/more-routing/more-route-selector-extracted.js
index a6e5e01f2caa799fb454b68991e279a219de9c7d..07d17d1e5764b2390641af7a9a0dec026c9a8566 100644
--- a/third_party/polymer/v0_8/components-chromium/more-routing/more-route-selector-extracted.js
+++ b/third_party/polymer/v0_8/components-chromium/more-routing/more-route-selector-extracted.js
@@ -99,6 +99,7 @@ Polymer({
    * defined by the current URL.
    */
   _onSelectedItemChanged: function(event) {
+    if (this._settingSelection) return;
     var route = this._routeForItem(event.detail.value);
     if (!route) return;
     route.navigateTo();
@@ -114,8 +115,23 @@ Polymer({
 
   _onMoreRouteChange: function(event) {
     if (!this._managedSelector) return;
-    var route = event.detail.newRoute;
-    this._managedSelector.select(this.routes.indexOf(route));
+
+    var selected = '';
+
+    var index = this.routes.indexOf(event.detail.newRoute);
+    var attrForSelected = this._managedSelector.attrForSelected;
+    if (!attrForSelected) {
+      selected = index;
+    } else {
+      var item = this._managedSelector.items[index];
+      if (item)
+        selected = item[attrForSelected] || item.getAttribute(attrForSelected);
+    }
+
+    // Make sure that we don't turn around and re-navigate
+    this._settingSelection = true;
+    this._managedSelector.select(selected);
+    this._settingSelection = false;
   },
 
   _findTargetSelector: function() {