[MD settings] updating polymer to 1.1.13

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 33 matching lines @@
     observers: [
       '_changedControlState(focused, disabled)'
     ],
 
     ready: function() {
       this.addEventListener('focus', this._boundFocusBlurHandler, true);
       this.addEventListener('blur', this._boundFocusBlurHandler, true);
     },
 
     _focusBlurHandler: function(event) {
-      var target = event.path ? event.path[0] : event.target;
-      if (target === this) {
+      // NOTE(cdata):  if we are in ShadowDOM land, `event.target` will
+      // eventually become `this` due to retargeting; if we are not in
+      // ShadowDOM land, `event.target` will eventually become `this` due
+      // to the second conditional which fires a synthetic event (that is also
+      // handled). In either case, we can disregard `event.path`.
+
+      if (event.target === this) {
         var focused = event.type === 'focus';
         this._setFocused(focused);
       } else if (!this.shadowRoot) {
         this.fire(event.type, {sourceEvent: event}, {
           node: this,
           bubbles: event.bubbles,
           cancelable: event.cancelable
         });
       }
     },
@@ skipping 11 matching lines @@
     },
 
     _changedControlState: function() {
       // _controlStateChanged is abstract, follow-on behaviors may implement it
       if (this._controlStateChanged) {
         this._controlStateChanged();
       }
     }
 
   };