DevTools: Move timeline tree view out of experiment

BUG=521226

Review URL: https://codereview.chromium.org/1303883002

git-svn-id: svn://svn.chromium.org/blink/trunk@200939 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/devtools/front_end/main/Main.js

@@ -126,7 +126,6 @@ WebInspector.Main.prototype = {
         Runtime.experiments.register("applyCustomStylesheet", "Allow custom UI themes");
         Runtime.experiments.register("blackboxJSFramesOnTimeline", "Blackbox JavaScript frames on Timeline", true);
         Runtime.experiments.register("colorContrastRatio", "Contrast ratio line in color picker", true);
-        Runtime.experiments.register("timelineTreeView", "Costly functions tree view on the Timeline", true);
         Runtime.experiments.register("colorPalettes", "Color palettes");
         Runtime.experiments.register("customObjectFormatters", "Custom object formatters", true);
         Runtime.experiments.register("emptySourceMapAutoStepping", "Empty sourcemap auto-stepping");

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

@@ -1348,10 +1348,8 @@ WebInspector.TimelineDetailsView = function(timelineModel)
     this.appendTab(WebInspector.TimelinePanel.DetailsTab.Details, WebInspector.UIString("Summary"), this._defaultDetailsWidget);
     this.setPreferredTab(WebInspector.TimelinePanel.DetailsTab.Details);
 
-    if (Runtime.experiments.isEnabled("timelineTreeView")) {
-        this._heavyTreeView = new WebInspector.TimelineTreeView(timelineModel);
-        this.appendTab(WebInspector.TimelinePanel.DetailsTab.BottomUpTree, WebInspector.UIString("Aggregated Details"), this._heavyTreeView);
-    }
+    this._heavyTreeView = new WebInspector.TimelineTreeView(timelineModel);
+    this.appendTab(WebInspector.TimelinePanel.DetailsTab.BottomUpTree, WebInspector.UIString("Aggregated Details"), this._heavyTreeView);
 
     this._staticTabs = new Set([
         WebInspector.TimelinePanel.DetailsTab.Details,