DevTools: adopt existing Timeline tests for tracing based Timeline

LayoutTests/inspector/tracing/timeline-event-dispatch-expected.txt

Index: LayoutTests/inspector/tracing/timeline-event-dispatch-expected.txt
diff --git a/LayoutTests/inspector/tracing/timeline-event-dispatch-expected.txt b/LayoutTests/inspector/tracing/timeline-event-dispatch-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5ae0e6a2a34422e26c3ac9fead7a966db92f39ee
--- /dev/null
+++ b/LayoutTests/inspector/tracing/timeline-event-dispatch-expected.txt
@@ -0,0 +1,55 @@
+Tests the Timeline API instrumentation of a DOM Dispatch (mousedown)
+
+Test Mouse Target
+EventDispatch Properties:
+{
+    data : {
+        type : "mouseover"
+    }
+    endTime : <number>
+    startTime : <number>
+    thread : <string>
+    type : "EventDispatch"
+}
+EventDispatch Properties:
+{
+    data : {
+        type : "mousemove"
+    }
+    endTime : <number>
+    startTime : <number>
+    thread : <string>
+    type : "EventDispatch"
+}
+EventDispatch Properties:
+{
+    children : <object>
+    data : {
+        type : "mousedown"
+    }
+    endTime : <number>
+    startTime : <number>
+    thread : <string>
+    type : "EventDispatch"
+}
+EventDispatch Properties:
+{
+    data : {
+        type : "selectstart"
+    }
+    endTime : <number>
+    startTime : <number>
+    thread : <string>
+    type : "EventDispatch"
+}
+EventDispatch Properties:
+{
+    data : {
+        type : "selectionchange"
+    }
+    endTime : <number>
+    startTime : <number>
+    thread : <string>
+    type : "EventDispatch"
+}
+