Update Polymer

third_party/polymer/v1_0/components-chromium/iron-dropdown/iron-dropdown-extracted.js

 
     (function() {
       'use strict';
 
       Polymer({
         is: 'iron-dropdown',
 
         behaviors: [
           Polymer.IronControlState,
           Polymer.IronA11yKeysBehavior,
@@ skipping 80 matching lines @@
           /**
            * Set to true to disable animations when opening and closing the
            * dropdown.
            */
           noAnimations: {
             type: Boolean,
             value: false
           },
 
           /**
+           * By default, the dropdown will constrain scrolling on the page
+           * to itself when opened.
+           * Set to true in order to prevent scroll from being constrained
+           * to the dropdown when it opens.
+           */
+          allowOutsideScroll: {
+            type: Boolean,
+            value: false
+          },
+
+          /**
            * We memoize the positionTarget bounding rectangle so that we can
            * limit the number of times it is queried per resize / relayout.
            * @type {?Object}
            */
           _positionRectMemo: {
             type: Object
           }
         },
 
         listeners: {
@@ skipping 99 matching lines @@
 
           if (this.opened) {
             this._focusContent();
           }
         },
 
         /**
          * Overridden from `IronOverlayBehavior`.
          */
         _renderOpened: function() {
-          Polymer.IronDropdownScrollManager.pushScrollLock(this);
+          if (!this.allowOutsideScroll) {
+            Polymer.IronDropdownScrollManager.pushScrollLock(this);
+          }
+
           if (!this.noAnimations && this.animationConfig && this.animationConfig.open) {
             this.$.contentWrapper.classList.add('animating');
             this.playAnimation('open');
           } else {
             Polymer.IronOverlayBehaviorImpl._renderOpened.apply(this, arguments);
           }
         },
 
         /**
          * Overridden from `IronOverlayBehavior`.
@@ skipping 134 matching lines @@
           // `display: none` is removed from the element.
           this.async(function() {
             if (this._focusTarget) {
               this._focusTarget.focus();
             }
           });
         }
       });
     })();