Make two promise-related tests deterministic

third_party/WebKit/LayoutTests/http/tests/security/promise-access-control-deny.html

Index: third_party/WebKit/LayoutTests/http/tests/security/promise-access-control-deny.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/security/promise-access-control-deny.html b/third_party/WebKit/LayoutTests/http/tests/security/promise-access-control-deny.html
index 5e1ece76f9808fc1e8b6829b75e84ed8032d0141..755f614f6425346a612168e39db8bd7206309195 100644
--- a/third_party/WebKit/LayoutTests/http/tests/security/promise-access-control-deny.html
+++ b/third_party/WebKit/LayoutTests/http/tests/security/promise-access-control-deny.html
@@ -13,10 +13,12 @@ addEventListener('unhandledrejection', function(e) {
 
 function finishTest() {
     setTimeout(function() {
-        if (window.testRunner) {
-            testRunner.notifyDone();
-        }
-    }, 1);
+        setTimeout(function() {
+            if (window.testRunner) {
+                testRunner.notifyDone();
+            }
+        }, 0);
+    }, 0);
 };
 </script>
 <script src='http://localhost:8000/security/resources/promise-access-control.php?allow=false' onload='finishTest()'></script>