title: Set pupeteer window size when running not headless (not viewport)
body: <p>Is it somehow possible to set the browsers (Chrome[ium]) window size like the viewport size?</p>
  
  <p>Setting only the viewport results in a unhandy appearance when the browser is not running headfully and I want to visually see what's going on within the browser instance.</p>
  
  <p>So I would like something like below:</p>
  
  <pre><code>const browser = await puppeteer.launch({
        headless: false, // The browser is visible
        ignoreHTTPSErrors: true
  }),
  page = await browser.newPage();
  
  
  // This is well explained in the API
  await page.setViewport({
      width: options.width,
      height: options.height
  });
  
  // But is there something like this (careful this is dummy code)
  browser.setWindowSize({
      width: options.width,
      height: options.height
  });
  </code></pre>
  
  <p>Thanks for any help pointing me into the right direction</p>