chromium/content/test/data/accessibility/aria/aria-checked-expected-win.txt

ROLE_SYSTEM_DOCUMENT READONLY FOCUSABLE
++ROLE_SYSTEM_CHECKBUTTON CHECKED FOCUSABLE IA2_STATE_CHECKABLE checkable:true
++ROLE_SYSTEM_CHECKBUTTON FOCUSABLE IA2_STATE_CHECKABLE checkable:true
++ROLE_SYSTEM_CHECKBUTTON MIXED FOCUSABLE IA2_STATE_CHECKABLE checkable:true