Tests that contain is not exposed when the feature is disabled

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS 'contain' in document.documentElement.style is false
PASS 'contain' in getComputedStyle(document.documentElement) is false
PASS getComputedStyle(document.getElementById('target')).getPropertyValue('contain') == '' is true
PASS CSS.supports('contain: paint') is false
PASS CSS.supports('contain: inherit') is false
PASS successfullyParsed is true

TEST COMPLETE