[third_party] add polymer 1.2.3

polymer_1.2.3/bower_components/iron-test-helpers/test-helpers.js

Index: polymer_1.2.3/bower_components/iron-test-helpers/test-helpers.js
diff --git a/polymer_1.0.4/bower_components/iron-test-helpers/test-helpers.js b/polymer_1.2.3/bower_components/iron-test-helpers/test-helpers.js
similarity index 76%
copy from polymer_1.0.4/bower_components/iron-test-helpers/test-helpers.js
copy to polymer_1.2.3/bower_components/iron-test-helpers/test-helpers.js
index 3465186b72f8aa219eb1c84c77e8cab2761e7a63..adaf692e9de6622344c083ad162ebb411eb6e11f 100644
--- a/polymer_1.0.4/bower_components/iron-test-helpers/test-helpers.js
+++ b/polymer_1.2.3/bower_components/iron-test-helpers/test-helpers.js
@@ -8,6 +8,7 @@
  * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
  */
 (function(global) {
+  'use strict';
 
   global.flushAsynchronousOperations = function() {
     // force distribution
@@ -30,10 +31,29 @@
       bubbles: true,
       cancelable: true
     });
-    for (p in props) {
+    for (var p in props) {
       event[p] = props[p];
     }
     node.dispatchEvent(event);
   };
 
+  global.skipUnless = function(condition, test) {
+    var isAsyncTest = !!test.length;
+
+    return function(done) {
+      var testCalledDone = false;
+
+      if (!condition()) {
+        return done();
+      }
+
+      var result = test.call(this, done);
+
+      if (!isAsyncTest) {
+        done();
+      }
+
+      return result;
+    };
+  };
 })(this);