DevTools: move TracingModel.js into the sdk module.

Source/devtools/front_end/timeline/TimelineFrameModel.js

Index: Source/devtools/front_end/timeline/TimelineFrameModel.js
diff --git a/Source/devtools/front_end/timeline/TimelineFrameModel.js b/Source/devtools/front_end/timeline/TimelineFrameModel.js
index 5701e1b85599248058cacd8f82f1ed929183a1b5..76092a8015d1950ecb6a73588033bbfa177e185c 100644
--- a/Source/devtools/front_end/timeline/TimelineFrameModel.js
+++ b/Source/devtools/front_end/timeline/TimelineFrameModel.js
@@ -461,9 +461,9 @@ WebInspector.TracingTimelineFrameModel.prototype = {
             this._framePendingCommit = new WebInspector.PendingFrame();
         if (!this._framePendingCommit)
             return;
-        if (event.name === eventNames.Paint && event.args["data"]["layerId"] && event.picture) {
+        if (event.name === eventNames.Paint && event.dataArg["layerId"] && event.picture) {
             /** @type {!WebInspector.LayerPaintEvent} */
-            var paintEvent = {layerId: event.args["data"]["layerId"], picture: event.picture, rect: event.layerRect, traceEvent: event};
+            var paintEvent = {layerId: event.dataArg["layerId"], picture: event.picture, rect: event.layerRect, traceEvent: event};
             this._framePendingCommit.paints.push(paintEvent);
         }