exposeDevToolsProtocol

Inject object to the target's main frame that provides a communication channel with browser target.

Injected object will be available as window[bindingName].

The object has the follwing API:

• binding.send(json) - a method to send messages over the remote debugging protocol
• binding.onmessage = json => handleMessage(json) - a callback that will be called for the protocol notifications and command responses.