Roll Polymer to 1.3.1

third_party/polymer/v1_0/components-chromium/iron-behaviors/iron-control-state-extracted.js

 /**
    * @demo demo/index.html
    * @polymerBehavior
    */
   Polymer.IronControlState = {
 
     properties: {
 
       /**
        * If true, the element currently has focus.
@@ skipping 57 matching lines @@
       }
     },
 
     _disabledChanged: function(disabled, old) {
       this.setAttribute('aria-disabled', disabled ? 'true' : 'false');
       this.style.pointerEvents = disabled ? 'none' : '';
       if (disabled) {
         this._oldTabIndex = this.tabIndex;
         this.focused = false;
         this.tabIndex = -1;
+        this.blur();
       } else if (this._oldTabIndex !== undefined) {
         this.tabIndex = this._oldTabIndex;
       }
     },
 
     _changedControlState: function() {
       // _controlStateChanged is abstract, follow-on behaviors may implement it
       if (this._controlStateChanged) {
         this._controlStateChanged();
       }
     }
 
   };