chromium/content/test/data/accessibility/html/form-expected-mac.txt

AXWebArea AXRoleDescription='HTML content'
++AXGroup AXRoleDescription='group'
++++AXButton AXRoleDescription='button' AXTitle='Submit'
++AXGroup AXSubrole=AXLandmarkForm AXDescription='Name' AXRoleDescription='form'
++++AXButton AXRoleDescription='button' AXTitle='Submit'