Roll 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 43 matching lines @@
       this._resetTabindices();
     },
 
     /**
      * Selects the given value. If the `multi` property is true, then the selected state of the
      * `value` will be toggled; otherwise the `value` will be selected.
      *
      * @param {string|number} value the value to select.
      */
     select: function(value) {
+      // Cancel automatically focusing a default item if the menu received focus
+      // through a user action selecting a particular item.
       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);
     },
 
@@ skipping 150 matching lines @@
       }
 
       // Do not focus the selected tab if the deepest target is part of the
       // menu element's local DOM and is focusable.
       var rootTarget = /** @type {?HTMLElement} */(
           Polymer.dom(event).rootTarget);
       if (rootTarget !== this && typeof rootTarget.tabIndex !== "undefined" && !this.isLightDescendant(rootTarget)) {
         return;
       }
 
-      this.blur();
-
       // clear the cached focus item
       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 {
+        } else if (this.items[0]) {
           this._setFocusedItem(this.items[0]);
         }
-      // async 1ms to wait for `select` to get called from `_itemActivate`
-      }, 1);
+      });
     },
 
     /**
      * Handler that is called when the up key is pressed.
      *
      * @param {CustomEvent} event A key combination event.
      */
     _onUpKey: function(event) {
       // up and down arrows moves the focus
       this._focusPrevious();
@@ skipping 41 matching lines @@
   };
 
   Polymer.IronMenuBehaviorImpl._shiftTabPressed = false;
 
   /** @polymerBehavior Polymer.IronMenuBehavior */
   Polymer.IronMenuBehavior = [
     Polymer.IronMultiSelectableBehavior,
     Polymer.IronA11yKeysBehavior,
     Polymer.IronMenuBehaviorImpl
   ];