DevTools: demote non-ready experiments to hidden

Source/devtools/front_end/main/Main.js

Index: Source/devtools/front_end/main/Main.js
diff --git a/Source/devtools/front_end/main/Main.js b/Source/devtools/front_end/main/Main.js
index 624116ecde7f4becc63b14e6c637d2920cb9fb3f..44e480170a32f672ba88e5ef60439ab2f2db78c6 100644
--- a/Source/devtools/front_end/main/Main.js
+++ b/Source/devtools/front_end/main/Main.js
@@ -124,7 +124,7 @@ WebInspector.Main.prototype = {
         Runtime.experiments.register("accessibilityInspection", "Accessibility Inspection");
         Runtime.experiments.register("animationInspection", "Animation Inspection");
         Runtime.experiments.register("applyCustomStylesheet", "Allow custom UI themes");
-        Runtime.experiments.register("blackboxJSFramesOnTimeline", "Blackbox JavaScript frames on Timeline");
+        Runtime.experiments.register("blackboxJSFramesOnTimeline", "Blackbox JavaScript frames on Timeline", true);
         Runtime.experiments.register("timelineDetailsChart", "Costly functions view in Timeline details", true);
         Runtime.experiments.register("customObjectFormatters", "Custom object formatters", true);
         Runtime.experiments.register("emptySourceMapAutoStepping", "Empty sourcemap auto-stepping");
@@ -136,7 +136,7 @@ WebInspector.Main.prototype = {
         Runtime.experiments.register("layoutEditor", "Layout editor", true);
         Runtime.experiments.register("materialDesign", "Material design");
         Runtime.experiments.register("networkRequestHeadersFilterInDetailsView", "Network request headers filter in details view", true);
-        Runtime.experiments.register("networkRequestsOnTimeline", "Network requests on Timeline");
+        Runtime.experiments.register("networkRequestsOnTimeline", "Network requests on Timeline", true);
         Runtime.experiments.register("privateScriptInspection", "Private script inspection");
         Runtime.experiments.register("promiseTracker", "Promise inspector");
         Runtime.experiments.register("securityPanel", "Security panel", true);