Update bower.json for Polymer elements and add PRESUBMIT.py

third_party/polymer/v1_0/components-chromium/iron-validatable-behavior/iron-validatable-behavior-extracted.js

 
 
   /**
    * Use `Polymer.IronValidatableBehavior` to implement an element that validates user input.
    *
    * ### Accessiblity
    *
    * Changing the `invalid` property, either manually or by calling `validate()` will update the
    * `aria-invalid` attribute.
    *
@@ skipping 60 matching lines @@
      */
     hasValidator: function() {
       return this._validator != null;
     },
 
     /**
      * @param {Object} values Passed to the validator's `validate()` function.
      * @return {boolean} True if `values` is valid.
      */
     validate: function(values) {
-      var valid = this._validator && this._validator.validate(values);
+      var valid = true;
+      if (this.hasValidator()) {
+        valid = this._validator.validate(values);
+      }
+
       this.invalid = !valid;
       return valid;
     }
 
   };