DevTools: move tracing based Timeline out of experiment

LayoutTests/http/tests/inspector/timeline-test.js

Index: LayoutTests/http/tests/inspector/timeline-test.js
diff --git a/LayoutTests/http/tests/inspector/timeline-test.js b/LayoutTests/http/tests/inspector/timeline-test.js
index 3bf79a7c586155f31482f47b88250229e2ad6d8f..c4cd7ab686ac2ecb8391a5ccf50005c811619dc2 100644
--- a/LayoutTests/http/tests/inspector/timeline-test.js
+++ b/LayoutTests/http/tests/inspector/timeline-test.js
@@ -19,11 +19,14 @@ InspectorTest.timelinePropertyFormatters = {
     lineNumber: "formatAsTypeName",
     columnNumber: "formatAsTypeName",
     frameId: "formatAsTypeName",
+    frame: "formatAsTypeName",
     encodedDataLength: "formatAsTypeName",
     identifier: "formatAsTypeName",
     clip: "formatAsTypeName",
     root: "formatAsTypeName",
     backendNodeId: "formatAsTypeName",
+    nodeId: "formatAsTypeName",
+    rootNode: "formatAsTypeName",
     networkTime: "formatAsTypeName",
     thread: "formatAsTypeName"
 };
@@ -102,6 +105,14 @@ InspectorTest.loadTimelineRecords = function(records)
     records.forEach(model._addRecord, model);
 }
 
+InspectorTest.loadTimelineTraceEvents = function(sessionId, events)
+{
+    var tracingModel = WebInspector.inspectorView.showPanel("timeline")._tracingModel;
+    tracingModel._tracingStarted(sessionId);
+    tracingModel._eventsCollected(events);
+    tracingModel._tracingComplete();
+}
+
 InspectorTest.performActionsAndPrint = function(actions, typeName, includeTimeStamps)
 {
     function callback()
@@ -251,6 +262,8 @@ InspectorTest.printTimelineRecordProperties = function(record)
     }
     if (record.children().length)
         object["children"] = [];
+    if (!record.data() && record instanceof WebInspector.TracingTimelineModel.TraceEventRecord)
+        object["data"] = record.traceEvent().args;
     InspectorTest.addObject(object, InspectorTest.timelinePropertyFormatters);
 };