DevTools: track more elements panel user actions

third_party/WebKit/Source/devtools/front_end/elements/InspectElementModeController.js

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * 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
  * notice, this list of conditions and the following disclaimer.
  *
@@ skipping 101 matching lines @@
   /**
    * @override
    * @param {!UI.Context} context
    * @param {string} actionId
    * @return {boolean}
    */
   handleAction(context, actionId) {
     if (!Elements.inspectElementModeController)
       return false;
     Elements.inspectElementModeController._toggleInspectMode();
+    if (Elements.inspectElementModeController.isInInspectElementMode())
+      Host.userMetrics.actionTaken(Host.UserMetrics.Action.InspectElementModeToggleOn);

[pfeldman, 2017/02/07 19:15:27]

Are we after certain actionability here?

+    else
+      Host.userMetrics.actionTaken(Host.UserMetrics.Action.InspectElementModeToggleOff);
     return true;
   }
 };
 
 /** @type {?Elements.InspectElementModeController} */
 Elements.inspectElementModeController =
     Runtime.queryParam('isSharedWorker') ? null : new Elements.InspectElementModeController();