How to call getEventListeners function without DevTools?

[yes]

Implementation of getEventListeners is at InspectorDOMAgent::getEventListeners which is called from InspectedScriptHost::getEventListenersImpl which, in turn, can be accessed from an InjectedScriptManager using InjectedScriptManager::createForPage().

What I am trying to do is to call https://developer.chrome.com/devtools/docs/commandline-api#geteventlistenersobject without showing and preferably without loading the DevTools.

After opening DevTools as a hidden window, how can I send a message to its javascript context and get the results?

[magreenblatt]

Why do you want to call getEventListeners?

[yes]

I would like to expose getEventListeners method to the browser javascript context. It is normally visible only in DevTools context.

[yes]

Is it possible to invoke the getEventListeners method in this way?