Make js-test-post a noop.

LayoutTests/svg/zoom/resources/testPageZoom.js

Index: LayoutTests/svg/zoom/resources/testPageZoom.js
diff --git a/LayoutTests/svg/zoom/resources/testPageZoom.js b/LayoutTests/svg/zoom/resources/testPageZoom.js
index 1b49d14fa28512f012ddde73c186869543e1e1dc..c37c1a328ea09a57f0f764eb6e98753c254d08af 100644
--- a/LayoutTests/svg/zoom/resources/testPageZoom.js
+++ b/LayoutTests/svg/zoom/resources/testPageZoom.js
@@ -12,22 +12,10 @@ function repaintTest() {
     if (!window.postZoomCallback)
         return;
 
+    window.jsTestIsAsync = true;
     if (window.testRunner)
         testRunner.waitUntilDone();
 
     window.postZoomCallback();
-    completeDynamicTest();
-}
-
-function completeDynamicTest() {
-    var script = document.createElement("script");
-
-    script.onload = function() {
-        if (window.testRunner)
-            testRunner.notifyDone();
-    };
-
-    script.src = "../../../fast/js/resources/js-test-post.js";
-    successfullyParsed = true;
-    document.body.appendChild(script);
+    finishJSTest();
 }