Remove testRunner.display() from most compositing/ tests

LayoutTests/compositing/iframes/iframe-resize.html

Index: LayoutTests/compositing/iframes/iframe-resize.html
diff --git a/LayoutTests/compositing/iframes/iframe-resize.html b/LayoutTests/compositing/iframes/iframe-resize.html
index 084ab5cdf40609873713e5c6e58ffc16c4c5a000..81a16c78e3222c74f6a9d9aff1224203fdeaabda 100644
--- a/LayoutTests/compositing/iframes/iframe-resize.html
+++ b/LayoutTests/compositing/iframes/iframe-resize.html
@@ -30,23 +30,14 @@
   <script type="text/javascript" charset="utf-8">
     if (window.testRunner) {
         testRunner.dumpAsText();
-        testRunner.waitUntilDone();
     }
 
     function doTest()
     {
-        // For some reason this delay is required for AppKit to not short-circuit the display.
-        window.setTimeout(function() {
-          if (window.testRunner)
-            testRunner.display();
-
-            document.getElementById('parent-iframe').className = 'bigger';
-            if (window.testRunner) {
-                testRunner.display();
-                document.getElementById('layers').innerHTML = window.internals.layerTreeAsText(document);
-                testRunner.notifyDone();
-            }
-        }, 0);
+        document.getElementById('parent-iframe').className = 'bigger';
+        if (window.testRunner) {
+            document.getElementById('layers').innerHTML = window.internals.layerTreeAsText(document);
+        }
     }
 
     window.addEventListener('load', doTest, false);