[third_party] add polymer 1.2.3

polymer_1.2.3/bower_components/iron-validatable-behavior/test/iron-validatable-behavior.html

Index: polymer_1.2.3/bower_components/iron-validatable-behavior/test/iron-validatable-behavior.html
diff --git a/polymer_1.0.4/bower_components/iron-validatable-behavior/test/iron-validatable-behavior.html b/polymer_1.2.3/bower_components/iron-validatable-behavior/test/iron-validatable-behavior.html
similarity index 89%
copy from polymer_1.0.4/bower_components/iron-validatable-behavior/test/iron-validatable-behavior.html
copy to polymer_1.2.3/bower_components/iron-validatable-behavior/test/iron-validatable-behavior.html
index 435c034c7c13f218852bbbf7c178741a621eb27b..847a3f8f09bd6e6218d1c797cbff48bc525802c7 100644
--- a/polymer_1.0.4/bower_components/iron-validatable-behavior/test/iron-validatable-behavior.html
+++ b/polymer_1.2.3/bower_components/iron-validatable-behavior/test/iron-validatable-behavior.html
@@ -45,6 +45,12 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
         assert.isFalse(node.hasAttribute('aria-invalid'), 'aria-invalid is unset');
       });
 
+      test('validate() is true if a validator isn\'t set', function() {
+        var node = fixture('basic');
+        var valid = node.validate();
+        assert.isTrue(valid);
+      });
+
     });
 
   </script>