[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 4641f2e5dd327f8d1414c6ff8073dec2879f401c..86d5cb2fd83f9c745f9c4074721b98e85d96cd83 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);