Python - how to load Google Chrome or Chromium browser in the gtk.Window like webkit.WebView()?

Python - how to load Google Chrome or Chromium browser in the gtk.Window
like webkit.WebView()?

In Python (Linux), how can i load the Google chrome or Chromium browser
inside a gtk.Window()?
Where i am using now as webkit but instead of the webkit i need to use
Google Chrome/Chromium because of the Javscript engine and other update
issues.
$ apt-get install python-webkit
$ cat >> /var/tmp/browser.py << \EOF
#!/usr/bin/env python
import gtk
import webkit
import gobject
gobject.threads_init()
win = gtk.Window()
win.set_title("Python Browser")
bro = webkit.WebView()
bro.open("http://www.google.com")
win.add(bro)
win.show_all()
gtk.main()
EOF
$ python /var/tmp/browser.py