Implement AP2 Promises

LayoutTests/fast/js/Promise-resolve-with-then-reject.html

Index: LayoutTests/fast/js/Promise-resolve-with-then-reject.html
diff --git a/LayoutTests/fast/js/Promise-resolve-with-then-reject.html b/LayoutTests/fast/js/Promise-resolve-with-then-reject.html
index c9c53ac26ffc85c4e2a7811b6e1992d004899b4b..88ae3497f2e15234ffbaa77deef30075e6e5ace8 100644
--- a/LayoutTests/fast/js/Promise-resolve-with-then-reject.html
+++ b/LayoutTests/fast/js/Promise-resolve-with-then-reject.html
@@ -10,13 +10,12 @@
 description('Test Promise.');
 
 window.jsTestIsAsync = true;
-var callback;
 var value = {
   then: function(fulfillCallback, rejectCallback) {
     testPassed('value.then is called.');
     window.thisValue = this;
     shouldBe('thisValue', 'value');
-    callback = rejectCallback;
+    rejectCallback('hello');
   }
 };
 var promise = new Promise(function(resolve) { resolve(value); });
@@ -33,7 +32,6 @@ promise.then(function(result) {
 
 debug('The promise is not rejected now.');
 
-callback('hello');
 </script>
 <script src="resources/js-test-post.js"></script>
 </body>