DevTools: Make the CPU throttling a non-hidden experiment.

BUG=436111

Review-Url: https://codereview.chromium.org/1973413002
Cr-Commit-Position: refs/heads/master@{#393653}
diff --git a/third_party/WebKit/Source/devtools/front_end/main/Main.js b/third_party/WebKit/Source/devtools/front_end/main/Main.js
index 16ad799..0524cb9f 100644
--- a/third_party/WebKit/Source/devtools/front_end/main/Main.js
+++ b/third_party/WebKit/Source/devtools/front_end/main/Main.js
@@ -105,7 +105,7 @@
         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("cpuThrottling", "CPU throttling", true);
+        Runtime.experiments.register("cpuThrottling", "CPU throttling");
         Runtime.experiments.register("emptySourceMapAutoStepping", "Empty sourcemap auto-stepping");
         Runtime.experiments.register("inputEventsOnTimelineOverview", "Input events on Timeline overview", true);
         Runtime.experiments.register("layersPanel", "Layers panel");