Junyan

Inspired by [sdeprez](https://github.com/sdeprez), I find a hack, it works. ```js const puppeteer = require('puppeteer'); const assert = require('assert'); (async () => { const browser = await puppeteer.launch({ headless: false, defaultViewport:...

@connorjclark done

#259 Please review it.

> hi @Junyan , it seems that newer versions of pupeteer now hide the `browser._connection` field, as it is private. do you know a workaroud? > > I could hack...