Timeline: get layers panel out of experiment

third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 1509 matching lines @@
     if (filmStripFrame) {
       var filmStripPreview = createElementWithClass('img', 'timeline-filmstrip-preview');
       filmStripFrame.imageDataPromise().then(onGotImageData.bind(null, filmStripPreview));
       contentHelper.appendElementRow('', filmStripPreview);
       filmStripPreview.addEventListener('click', frameClicked.bind(null, filmStripFrame), false);
     }
     var durationInMillis = frame.endTime - frame.startTime;
     contentHelper.appendTextRow(Common.UIString('FPS'), Math.floor(1000 / durationInMillis));
     contentHelper.appendTextRow(Common.UIString('CPU time'), Number.millisToString(frame.cpuTime, true));
 
-    if (Runtime.experiments.isEnabled('layersPanel') && frame.layerTree) {
+    if (frame.layerTree) {
       contentHelper.appendElementRow(
           Common.UIString('Layer tree'),
           Components.Linkifier.linkifyUsingRevealer(frame.layerTree, Common.UIString('show')));
     }
 
     /**
      * @param {!Element} image
      * @param {?string} data
      */
     function onGotImageData(image, data) {
@@ skipping 692 matching lines @@
   /**
    * @param {!SDK.TracingModel.Event} event
    * @param {string=} warningType
    */
   appendWarningRow(event, warningType) {
     var warning = Timeline.TimelineUIUtils.eventWarning(event, warningType);
     if (warning)
       this.appendElementRow(Common.UIString('Warning'), warning, true);
   }
 };