[Polymer] update third_party polymer

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: {
 
@@ skipping 94 matching lines @@
      * Given a KeyboardEvent, this method will focus the appropriate item in the
      * menu (if there is a relevant item, and it is possible to focus it).
      *
      * @param {KeyboardEvent} event A KeyboardEvent.
      */
     _focusWithKeyboardEvent: function(event) {
       for (var i = 0, item; item = this.items[i]; i++) {
         var attr = this.attrForItemTitle || 'textContent';
         var title = item[attr] || item.getAttribute(attr);
 
-        if (title && title.trim().charAt(0).toLowerCase() === String.fromCharCode(event.keyCode).toLowerCase()) {
+        if (!item.hasAttribute('disabled') && title && 
+            title.trim().charAt(0).toLowerCase() === String.fromCharCode(event.keyCode).toLowerCase()) {
           this._setFocusedItem(item);
           break;
         }
       }
     },
 
     /**
      * Focuses the previous item (relative to the currently focused item) in the
-     * menu.
+     * menu, disabled items will be skipped.
      */
     _focusPrevious: function() {
       var length = this.items.length;
-      var index = (Number(this.indexOf(this.focusedItem)) - 1 + length) % length;
-      this._setFocusedItem(this.items[index]);
+      var curFocusIndex = Number(this.indexOf(this.focusedItem));
+      for (var i = 1; i < length; i++) {
+        var item = this.items[(curFocusIndex - i + length) % length];
+        if (!item.hasAttribute('disabled')) {
+          this._setFocusedItem(item);
+          return;
+        }
+      }
     },
 
     /**
      * Focuses the next item (relative to the currently focused item) in the
-     * menu.
+     * menu, disabled items will be skipped.
      */
     _focusNext: function() {
-      var index = (Number(this.indexOf(this.focusedItem)) + 1) % this.items.length;
-      this._setFocusedItem(this.items[index]);
+      var length = this.items.length;
+      var curFocusIndex = Number(this.indexOf(this.focusedItem));
+      for (var i = 1; i < length; i++) {
+        var item = this.items[(curFocusIndex + i) % length];
+        if (!item.hasAttribute('disabled')) {
+          this._setFocusedItem(item);
+          return;
+        }
+      }
     },
 
     /**
      * Mutates items in the menu based on provided selection details, so that
      * all items correctly reflect selection state.
      *
      * @param {Element} item An item in the menu.
      * @param {boolean} isSelected True if the item should be shown in a
      * selected state, otherwise false.
      */
@@ skipping 88 matching lines @@
       this._defaultFocusAsync = this.async(function() {
         // focus the selected item when the menu receives focus, or the first item
         // if no item is selected
         var selectedItem = this.multi ? (this.selectedItems && this.selectedItems[0]) : this.selectedItem;
 
         this._setFocusedItem(null);
 
         if (selectedItem) {
           this._setFocusedItem(selectedItem);
         } else if (this.items[0]) {
-          this._setFocusedItem(this.items[0]);
+          // We find the first none-disabled item (if one exists)
+          this._focusNext();
         }
       });
     },
 
     /**
      * Handler that is called when the up key is pressed.
      *
      * @param {CustomEvent} event A key combination event.
      */
     _onUpKey: function(event) {
@@ skipping 43 matching lines @@
   };
 
   Polymer.IronMenuBehaviorImpl._shiftTabPressed = false;
 
   /** @polymerBehavior Polymer.IronMenuBehavior */
   Polymer.IronMenuBehavior = [
     Polymer.IronMultiSelectableBehavior,
     Polymer.IronA11yKeysBehavior,
     Polymer.IronMenuBehaviorImpl
   ];