[MD settings] updating polymer to 1.1.13

third_party/polymer/v1_0/components-chromium/iron-menu-behavior/iron-menu-behavior-extracted.js

 /**
    * `Polymer.IronMenuBehavior` implements accessible menu behavior.
    *
    * @demo demo/index.html
    * @polymerBehavior Polymer.IronMenuBehavior
    */
   Polymer.IronMenuBehaviorImpl = {
 
     properties: {
 
       /**
        * Returns the currently focused item.
-       *
-       * @attribute focusedItem
-       * @type Object
+       * @type {?Object}
        */
       focusedItem: {
         observer: '_focusedItemChanged',
         readOnly: true,
         type: Object
       },
 
       /**
        * The attribute to use on menu items to look up the item title. Typing the first
        * letter of an item when the menu is open focuses that item. If unset, `textContent`
        * will be used.
-       *
-       * @attribute attrForItemTitle
-       * @type String
        */
       attrForItemTitle: {
         type: String
       }
     },
 
     hostAttributes: {
       'role': 'menu',
       'tabindex': '0'
     },
@@ skipping 56 matching lines @@
         focusedItem.focus();
       }
     },
 
     select: function(value) {
       if (this._defaultFocusAsync) {
         this.cancelAsync(this._defaultFocusAsync);
         this._defaultFocusAsync = null;
       }
       var item = this._valueToItem(value);
+      if (item && item.hasAttribute('disabled')) return;
       this._setFocusedItem(item);
       Polymer.IronMultiSelectableBehaviorImpl.select.apply(this, arguments);
     },
 
     _onFocus: function(event) {
       if (Polymer.IronMenuBehaviorImpl._shiftTabPressed) {
         return;
       }
       // do not focus the menu itself
       this.blur();
@@ skipping 71 matching lines @@
   };
 
   Polymer.IronMenuBehaviorImpl._shiftTabPressed = false;
 
   /** @polymerBehavior Polymer.IronMenuBehavior */
   Polymer.IronMenuBehavior = [
     Polymer.IronMultiSelectableBehavior,
     Polymer.IronA11yKeysBehavior,
     Polymer.IronMenuBehaviorImpl
   ];