DevTools: Attempt to make inspector/elements/edit-dom-actions-shadow.html non-flaky

LayoutTests/inspector/elements/edit-dom-actions-shadow.html

Index: LayoutTests/inspector/elements/edit-dom-actions-shadow.html
diff --git a/LayoutTests/inspector/elements/edit-dom-actions-shadow.html b/LayoutTests/inspector/elements/edit-dom-actions-shadow.html
index 08789ce692471512ebed8e6193e5d2cc8286a77d..e113d1f5c18e8eeaf3782d9c040cac8cca9425c5 100644
--- a/LayoutTests/inspector/elements/edit-dom-actions-shadow.html
+++ b/LayoutTests/inspector/elements/edit-dom-actions-shadow.html
@@ -8,19 +8,13 @@
 function test()
 {
     // Save time on style updates.
-    WebInspector.inspectorView.showPanel("elements");
     WebInspector.StylesSidebarPane.prototype.update = function() {};
     WebInspector.MetricsSidebarPane.prototype.update = function() {};
 
     InspectorTest.runTestSuite([
         function testSetUp(next)
         {
-            InspectorTest.nodeWithId("authorShadowDOMElement");
-            InspectorTest.nodeWithId("testSetAuthorShadowDOMElementAttribute", checkTree);
-            function checkTree()
-            {
-                InspectorTest.expandElementsTree(next);
-            }
+            InspectorTest.expandElementsTree(next);
         },
 
         function testSetAuthorShadowDOMElementAttribute(next)