This test only works in when run in dumprendertree as it relies on having auto-resize enabled its window. 

When it succeeds, there should be a series of PASS messages followed by a DONE message. 

PASS: document.body.clientWidth equaled window.innerWidth
PASS: document.body.clientHeight equaled window.innerHeight
PASS: document.scrollingElement.scrollWidth equaled window.innerWidth
PASS: document.scrollingElement.scrollHeight equaled window.innerHeight
PASS: window.innerWidth equaled window.outerWidth
PASS: window.innerHeight equaled window.outerHeight
DONE