[DevTools] Introduce a sidebar with a drop-down

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

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 82 matching lines @@
     // Keep this sorted alphabetically: both keys and values.
     Runtime.experiments.register('accessibilityInspection', 'Accessibility Inspection');
     Runtime.experiments.register('applyCustomStylesheet', 'Allow custom UI themes');
     Runtime.experiments.register('audits2', 'Audits 2.0', true);
     Runtime.experiments.register('autoAttachToCrossProcessSubframes', 'Auto-attach to cross-process subframes', true);
     Runtime.experiments.register('blackboxJSFramesOnTimeline', 'Blackbox JavaScript frames on Timeline', true);
     Runtime.experiments.register('changesDrawer', 'Changes drawer', true);
     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);
     Runtime.experiments.register('objectPreviews', 'Object previews', true);
     Runtime.experiments.register('persistence2', 'Persistence 2.0');
     Runtime.experiments.register('sourceDiff', 'Source diff');
     Runtime.experiments.register('terminalInDrawer', 'Terminal in drawer', true);
 
     // Timeline
     Runtime.experiments.register('timelineEventInitiators', 'Timeline: event initiators');
@@ skipping 835 matching lines @@
    * @override
    * @return {?Element}
    */
   settingElement() {
     return UI.SettingsUI.createSettingCheckbox(
         Common.UIString('Show rulers'), Common.moduleSetting('showMetricsRulers'));
   }
 };
 
 new Main.Main();