Refactor TimeBase to post tasks. Workers to use real Idle tasks.

LayoutTests/fast/dom/HTMLImageElement/image-innerHTML.html

Index: LayoutTests/fast/dom/HTMLImageElement/image-innerHTML.html
diff --git a/LayoutTests/fast/dom/HTMLImageElement/image-innerHTML.html b/LayoutTests/fast/dom/HTMLImageElement/image-innerHTML.html
index 8ab8575df473fdb9880b29e0a052e95b78311d34..a5b4c4ab6266fe0ea3f995369048e9f2644823f3 100644
--- a/LayoutTests/fast/dom/HTMLImageElement/image-innerHTML.html
+++ b/LayoutTests/fast/dom/HTMLImageElement/image-innerHTML.html
@@ -10,14 +10,31 @@ var div = document.createElement('div');
 var div2 = document.createElement('div');
 var attemptedLoadDirect = false;
 var attemptedLoadIndirect = false;
+var numEventsOutsanding = 3;
 
-div.innerHTML = '<img src="../resources/abe.png" onload="attemptedLoadDirect = true;">';
-div2.innerHTML = '<div><img src="../resources/abe.png" onload="attemptedLoadIndirect = true;"></div>';
-document.body.onload = function() {
-    shouldBeTrue('attemptedLoadDirect');
-    shouldBeTrue('attemptedLoadIndirect');
-    finishJSTest();
-};
+function maybeCheckResults() {
+    numEventsOutsanding--;
+    if (numEventsOutsanding == 0) {
+        shouldBeTrue('attemptedLoadDirect');
+        shouldBeTrue('attemptedLoadIndirect');
+        finishJSTest();
+    }
+}
+
+function onDirect() {
+    attemptedLoadDirect = true;
+    maybeCheckResults();
+}
+
+function onIndirect() {
+    attemptedLoadIndirect = true;
+    maybeCheckResults();
+}
+
+// The order in which these three events occur is undefined, and shouldn't matter for this test.
+div.innerHTML = '<img src="../resources/abe.png" onload="onDirect();">';
+div2.innerHTML = '<div><img src="../resources/abe.png" onload="onIndirect();"></div>';
+document.body.onload = maybeCheckResults;
 </script>
 </body>
 </html>