Create "Paint profiler" experiment

Source/devtools/front_end/timeline/TimelinePanel.js

Index: Source/devtools/front_end/timeline/TimelinePanel.js
diff --git a/Source/devtools/front_end/timeline/TimelinePanel.js b/Source/devtools/front_end/timeline/TimelinePanel.js
index 7e5ccff7c325ce63e3155bf32da014faaaff27ba..7b515fa77dee7bdbd502a6be95fb16bcf5179502 100644
--- a/Source/devtools/front_end/timeline/TimelinePanel.js
+++ b/Source/devtools/front_end/timeline/TimelinePanel.js
@@ -404,7 +404,8 @@ WebInspector.TimelinePanel.prototype = {
                                                                           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()) {

[pfeldman, 2014/08/08 12:32:21]

You want to hide layers behind experiment as well.

[yurys, 2014/08/08 12:58:06]

Added checks in a couple of places but neither layer tree nor pictures should be
recorded if "Paint" checkbox is not ticked.

             this._captureLayersAndPicturesSetting = WebInspector.settings.createSetting("timelineCaptureLayersAndPictures", false);
             panelStatusBarElement.appendChild(this._createSettingCheckbox(WebInspector.UIString("Paint"),
                                                                           this._captureLayersAndPicturesSetting,