Create "Paint profiler" experiment

Source/devtools/front_end/timeline/TimelinePanel.js

 /*
  * Copyright (C) 2012 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 386 matching lines @@
                                                                       this._captureMemorySetting,
                                                                       WebInspector.UIString("Capture memory information on every timeline event")));
         this._captureMemorySetting.addChangeListener(this._onModeChanged, this);
         if (WebInspector.experimentsSettings.timelinePowerProfiler.isEnabled()) {
             this._capturePowerSetting = WebInspector.settings.createSetting("timelineCapturePower", false);
             panelStatusBarElement.appendChild(this._createSettingCheckbox(WebInspector.UIString("Power"),
                                                                           this._capturePowerSetting,
                                                                           WebInspector.UIString("Capture power information")));
             this._capturePowerSetting.addChangeListener(this._onModeChanged, this);
         }
-        if (WebInspector.experimentsSettings.timelineOnTraceEvents.isEnabled()) {
+        if (WebInspector.experimentsSettings.timelineOnTraceEvents.isEnabled() &&
+            WebInspector.experimentsSettings.paintProfiler.isEnabled()) {
             this._captureLayersAndPicturesSetting = WebInspector.settings.createSetting("timelineCaptureLayersAndPictures", false);
             panelStatusBarElement.appendChild(this._createSettingCheckbox(WebInspector.UIString("Paint"),
                                                                           this._captureLayersAndPicturesSetting,
                                                                           WebInspector.UIString("Capture graphics layer positions and painted pictures")));
         }
 
         this._miscStatusBarItems = panelStatusBarElement.createChild("div", "status-bar-item");
 
         this._filtersContainer = this.element.createChild("div", "timeline-filters-header hidden");
         this._filtersContainer.appendChild(this._filterBar.filtersElement());
@@ skipping 586 matching lines @@
             var title = this._uiUtils.titleForRecord(record);
             this._uiUtils.generateDetailsContent(record, this._model, this._detailsLinkifier, this.showInDetails.bind(this, title));
             break;
         case WebInspector.TimelineSelection.Type.TraceEvent:
             var event = /** @type {!WebInspector.TracingModel.Event} */ (this._selection.object());
             WebInspector.TracingTimelineUIUtils.buildTraceEventDetails(event, this._tracingTimelineModel, this._detailsLinkifier, this._appendDetailsTabsForTraceEventAndShowDetails.bind(this, event));
             break;
         case WebInspector.TimelineSelection.Type.Frame:
             var frame = /** @type {!WebInspector.TimelineFrame} */ (this._selection.object());
             this.showInDetails(WebInspector.UIString("Frame Statistics"), WebInspector.TimelineUIUtils.generateDetailsContentForFrame(this._lazyFrameModel, frame));
-            if (frame.layerTree) {
+            if (frame.layerTree && WebInspector.experimentsSettings.paintProfiler.isEnabled()) {
                 var layersView = this._layersView();
                 layersView.showLayerTree(frame.layerTree, frame.paints);
                 this._detailsView.appendTab("layers", WebInspector.UIString("Layers"), layersView);
             }
             break;
         }
     },
 
     /**
      * @param {!WebInspector.TracingModel.Event} event
      * @param {!Node} content
      */
     _appendDetailsTabsForTraceEventAndShowDetails: function(event, content)
     {
         var title = WebInspector.TracingTimelineUIUtils.styleForTraceEvent(event.name).title;
         this.showInDetails(title, content);
-        if (event.picture) {
+        if (event.picture && WebInspector.experimentsSettings.paintProfiler.isEnabled()) {
             var paintProfilerView = this._paintProfilerView();
             paintProfilerView.setPicture(event.thread.target(), event.picture);
             this._detailsView.appendTab("paintProfiler", WebInspector.UIString("Paint Profiler"), paintProfilerView);
         }
     },
 
     _updateSelectedRangeStats: function()
     {
         if (this._selection)
             return;
@@ skipping 401 matching lines @@
      * @param {!WebInspector.TimelineModel.Record} record
      * @return {boolean}
      */
     accept: function(record)
     {
         return !this._regex || this._uiUtils.testContentMatching(record, this._regex);
     },
 
     __proto__: WebInspector.TimelineModel.Filter.prototype
 }