[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 b912b2b32c404eb0fec62fa94305b70bba44d781..84482cd8f0a5239a6d1df921e22730a0cf6ebc24 100644
--- a/third_party/WebKit/Source/devtools/front_end/main/Main.js
+++ b/third_party/WebKit/Source/devtools/front_end/main/Main.js
@@ -99,6 +99,7 @@ Main.Main = class {
     Runtime.experiments.register('continueToLocationMarkers', 'Continue to location markers', true);
     Runtime.experiments.register('colorContrastRatio', 'Contrast ratio line in color picker', 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);