Drop the adding and removing of the 'running' class in SVGTestCase.js

third_party/WebKit/LayoutTests/svg/dynamic-updates/resources/SVGTestCase.js

Index: third_party/WebKit/LayoutTests/svg/dynamic-updates/resources/SVGTestCase.js
diff --git a/third_party/WebKit/LayoutTests/svg/dynamic-updates/resources/SVGTestCase.js b/third_party/WebKit/LayoutTests/svg/dynamic-updates/resources/SVGTestCase.js
index 1709ea808d5650816661ff05f7ddf25d6e344975..494fd2b77827d4f5ed7788e028176e6d39910bc8 100644
--- a/third_party/WebKit/LayoutTests/svg/dynamic-updates/resources/SVGTestCase.js
+++ b/third_party/WebKit/LayoutTests/svg/dynamic-updates/resources/SVGTestCase.js
@@ -10,15 +10,12 @@ var iframeElement;
 
 if (window.testRunner) {
     var s = document.createElement('style');
-    s.innerHTML += ".running h1, .running pre, .running div#console, .running p { display:none }";
     s.innerHTML += "h1, pre, div#console, p { opacity: 0 }";
     s.innerHTML += "body { overflow: hidden }";
     document.head.appendChild(s);
-    document.head.parentNode.classList.add("running");
 }
 
 function afterTest() {
-    document.head.parentNode.classList.remove("running");
     finishJSTest();
 }