Update Polymer components.

third_party/polymer/components/paper-menu/paper-submenu.html

Index: third_party/polymer/components/paper-menu/paper-submenu.html
diff --git a/third_party/polymer/components/paper-menu/paper-submenu.html b/third_party/polymer/components/paper-menu/paper-submenu.html
index e1c1d111cdb4c457638d07c79e0fe61b32b0dd4e..4fadb87ed0580566a85c34d82dee86bbc0a2d062 100644
--- a/third_party/polymer/components/paper-menu/paper-submenu.html
+++ b/third_party/polymer/components/paper-menu/paper-submenu.html
@@ -9,12 +9,8 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 -->
 
 <link rel="import" href="../polymer/polymer.html">
-<link rel="import" href="../iron-menu-behavior/iron-menu-behavior.html">
 <link rel="import" href="../iron-behaviors/iron-control-state.html">
 <link rel="import" href="../iron-collapse/iron-collapse.html">
-<link rel="import" href="../iron-flex-layout/iron-flex-layout.html">
-<link rel="import" href="../paper-styles/default-theme.html">
-<link rel="import" href="../paper-styles/color.html">
 <link rel="import" href="paper-menu-shared-styles.html">
 
 <!--
@@ -127,7 +123,7 @@ item has bolded text. Please see the `<paper-menu>` docs for which attributes
         this.listen(this.__parent, 'iron-activate', '_onParentIronActivate');
       },
 
-      dettached: function() {
+      detached: function() {
         this.unlisten(this.__parent, 'iron-activate', '_onParentIronActivate');
       },
 
@@ -135,11 +131,8 @@ item has bolded text. Please see the `<paper-menu>` docs for which attributes
        * Expand the submenu content.
        */
       open: function() {
-        if (!this.disabled && !this._active) {
-          this.$.collapse.show();
-          this._active = true;
-          this.__trigger && this.__trigger.classList.add('iron-selected');
-          this.__content && this.__content.focus();
+        if (!this.disabled) {
+          this.opened = true;
         }
       },
 
@@ -147,18 +140,14 @@ item has bolded text. Please see the `<paper-menu>` docs for which attributes
        * Collapse the submenu content.
        */
       close: function() {
-        if (this._active) {
-          this.$.collapse.hide();
-          this._active = false;
-          this.__trigger && this.__trigger.classList.remove('iron-selected');
-        }
+        this.opened = false;
       },
 
       /**
        * Toggle the submenu.
        */
       toggle: function() {
-        if (this._active) {
+        if (this.opened) {
           this.close();
         } else {
           this.open();
@@ -179,8 +168,11 @@ item has bolded text. Please see the `<paper-menu>` docs for which attributes
        */
       _openedChanged: function(opened, oldOpened) {
         if (opened) {
+          this.__trigger && this.__trigger.classList.add('iron-selected');
+          this.__content && this.__content.focus();
           this.fire('paper-submenu-open');
         } else if (oldOpened != null) {
+          this.__trigger && this.__trigger.classList.remove('iron-selected');
           this.fire('paper-submenu-close');
         }
       },
@@ -210,7 +202,7 @@ item has bolded text. Please see the `<paper-menu>` docs for which attributes
        */
       _disabledChanged: function(disabled) {
         Polymer.IronControlState._disabledChanged.apply(this, arguments);
-        if (disabled && this._active) {
+        if (disabled && this.opened) {
           this.close();
         }
       },