DevTools: rebaseline inspector tests with poor expectations (2).

LayoutTests/inspector/tracing-test.js

 function initialize_TracingTest()
 {
 
 InspectorTest.preloadPanel("timeline");
 WebInspector.TempFile = InspectorTest.TempFileMock;
 
 InspectorTest.createTracingModel = function()
 {
     return new WebInspector.TracingModel(new WebInspector.TempFileBackingStorage("tracing"));
 }
 
 InspectorTest.tracingModel = function()
 {
     return WebInspector.panels.timeline._tracingModel;
 }
 
 InspectorTest.tracingTimelineModel = function()
 {
     return WebInspector.panels.timeline._model;
 }
 
 InspectorTest.invokeWithTracing = function(functionName, callback, additionalCategories, enableJSSampling)
 {
-    InspectorTest.tracingTimelineModel().addEventListener(WebInspector.TimelineModel.Events.RecordingStarted, onTracingStarted, this);
     var categories = "-*,disabled-by-default-devtools.timeline*";
     if (additionalCategories)
         categories += "," + additionalCategories;
-    InspectorTest.tracingTimelineModel()._startRecordingWithCategories(categories, enableJSSampling);
+    InspectorTest.tracingTimelineModel()._startRecordingWithCategories(categories, enableJSSampling, tracingStarted);
 
-    function onTracingStarted(event)
+    function tracingStarted()
     {
-        InspectorTest.tracingTimelineModel().removeEventListener(WebInspector.TimelineModel.Events.RecordingStarted, onTracingStarted, this);
         InspectorTest.invokePageFunctionAsync(functionName, onPageActionsDone);
     }
 
     function onPageActionsDone()
     {
         InspectorTest.tracingTimelineModel().addEventListener(WebInspector.TimelineModel.Events.RecordingStopped, onTracingComplete, this);
         InspectorTest.tracingTimelineModel().stopRecording();
     }
 
     function onTracingComplete(event)
     {
         InspectorTest.tracingTimelineModel().removeEventListener(WebInspector.TimelineModel.Events.RecordingStopped, onTracingComplete, this);
         callback();
     }
 }
 
 }