MD Settings: Update passwords section for new cr-shared-menu features

ui/webui/resources/cr_elements/cr_shared_menu/cr_shared_menu.js

Index: ui/webui/resources/cr_elements/cr_shared_menu/cr_shared_menu.js
diff --git a/ui/webui/resources/cr_elements/cr_shared_menu/cr_shared_menu.js b/ui/webui/resources/cr_elements/cr_shared_menu/cr_shared_menu.js
index e08fd0d10d43d197a45af4e9ad8909037107e120..7dfdd31faec7d90d477a53a60744874007deaca1 100644
--- a/ui/webui/resources/cr_elements/cr_shared_menu/cr_shared_menu.js
+++ b/ui/webui/resources/cr_elements/cr_shared_menu/cr_shared_menu.js
@@ -113,14 +113,6 @@ Polymer({
   /** @override */
   attached: function() {
     window.addEventListener('resize', this.closeMenu.bind(this));
-
-    var focusableChildren = Polymer.dom(this).querySelectorAll(
-        '[tabindex],button');
-    if (focusableChildren.length > 0) {
-      this.$.dropdown.focusTarget = focusableChildren[0];
-      this.firstFocus_ = focusableChildren[0];
-      this.lastFocus_ = focusableChildren[focusableChildren.length - 1];
-    }
   },
 
   /** Closes the menu. */
@@ -143,6 +135,14 @@ Polymer({
     this.itemData = itemData;
     this.lastAnchor_ = anchor;
 
+    var focusableChildren = Polymer.dom(this).querySelectorAll(
+        '[tabindex]:not([hidden]),button:not([hidden])');

[Dan Beam, 2016/07/14 17:09:20]

and it starts growing

[tsergeant, 2016/07/15 01:17:48]

https://www.youtube.com/watch?v=bWcASV2sey0

https://github.com/PolymerElements/iron-overlay-behavior/pull/200

+    if (focusableChildren.length > 0) {
+      this.$.dropdown.focusTarget = focusableChildren[0];
+      this.firstFocus_ = focusableChildren[0];
+      this.lastFocus_ = focusableChildren[focusableChildren.length - 1];
+    }
+
     // Move the menu to the anchor.
     this.$.dropdown.positionTarget = anchor;
     this.menuOpen = true;