Tests virtual time with history navigation.
PAGE: http://foo.com/
PAGE: http://foo.com/a/
document.location.href = 'http://bar.com/'
PAGE: http://bar.com/
PAGE: http://bar.com/b/
PAGE: http://bar.com/c/
PAGE: http://bar.com/d/
document.getElementById('frame_b').src = '/e/'
PAGE: http://bar.com/e/
PAGE: http://bar.com/f/
history.forward()
history.back()
PAGE: http://bar.com/b/
PAGE: http://bar.com/d/
history.forward()
PAGE: http://bar.com/e/
PAGE: http://bar.com/f/
history.go(-1)
PAGE: http://bar.com/b/
PAGE: http://bar.com/d/