chromium/content/test/data/accessibility/aria/aria-relevant-expected-mac.txt

AXWebArea
++AXGroup AXSubrole=AXApplicationLog AXARIARelevant='additions'
++AXGroup AXSubrole=AXApplicationLog AXARIARelevant='removals'
++AXGroup AXSubrole=AXApplicationLog AXARIARelevant='text'
++AXGroup AXSubrole=AXApplicationLog AXARIARelevant='all'
++AXGroup AXSubrole=AXApplicationLog AXARIARelevant='additions text'