[DevTools] Introduce a sidebar with a drop-down

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

Index: third_party/WebKit/Source/devtools/front_end/main/Main.js
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 f918a175266844ed2c7c8c3fee8dc84858f93797..4fd9d00f893a491fa93c5fc10f21600499e1cb7a 100644
--- a/third_party/WebKit/Source/devtools/front_end/main/Main.js
+++ b/third_party/WebKit/Source/devtools/front_end/main/Main.js
@@ -100,6 +100,7 @@ Main.Main = class {
     Runtime.experiments.register('colorContrastRatio', 'Color contrast ratio line in color picker', true);
     Runtime.experiments.register('continueToLocationMarkers', 'Continue to location markers', true);
     Runtime.experiments.register('emptySourceMapAutoStepping', 'Empty sourcemap auto-stepping');
+    Runtime.experiments.register('framesMenuAppPanel', 'Frames menu on the Application panel', true);
     Runtime.experiments.register('inputEventsOnTimelineOverview', 'Input events on Timeline overview', true);
     Runtime.experiments.register('liveSASS', 'Live SASS');
     Runtime.experiments.register('networkGroupingRequests', 'Network request groups support', true);