Revert 169371 "DevTools: defer styles delta calculation to until..."

trunk/LayoutTests/http/tests/inspector/elements/styles/edit-css-with-source-url.html

Index: trunk/LayoutTests/http/tests/inspector/elements/styles/edit-css-with-source-url.html
===================================================================
--- trunk/LayoutTests/http/tests/inspector/elements/styles/edit-css-with-source-url.html	(revision 169387)
+++ trunk/LayoutTests/http/tests/inspector/elements/styles/edit-css-with-source-url.html	(working copy)
@@ -33,6 +33,12 @@
         {
             var styleText = "#inspected {\n    color: red;\n}\n";
 
+            function loadStylesheet(callback)
+            {
+                InspectorTest.addResult("Loading stylesheet with sourceURL:");
+                InspectorTest.evaluateInPage("loadStylesheet()", callback);
+            }
+
             function dumpUISourceCodeContents()
             {
                 InspectorTest.addResult("Dumping uiSourceCode content:");
@@ -54,14 +60,11 @@
             function didShowScriptSource(sourceFrame)
             {
                 dumpUISourceCodeContents();
-                InspectorTest.addResult("Loading stylesheet with sourceURL:");
-                WebInspector.cssModel.addEventListener(WebInspector.CSSStyleModel.Events.StyleSheetAdded, stylesheetLoaded);
-                InspectorTest.evaluateInPage("loadStylesheet()");
+                loadStylesheet(stylesheetLoaded);
             }
   
             function stylesheetLoaded()
             {
-                WebInspector.cssModel.removeEventListener(WebInspector.CSSStyleModel.Events.StyleSheetAdded, stylesheetLoaded);
                 InspectorTest.addResult("Stylesheet loaded.");
                 WebInspector.inspectorView.showPanel("elements");
                 InspectorTest.selectNodeAndWaitForStyles("inspected", nodeSelected);