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

AXWebArea AXRoleDescription='HTML content'
++AXGroup AXRoleDescription='group'
++++AXTextField AXRoleDescription='text field'
++++AXButton AXRoleDescription='button' AXTitle='First submit in a form is a valid default button'
++++AXButton AXRoleDescription='button' AXTitle='Second submit in a form not a valid default button'
++AXGroup AXRoleDescription='group'
++++AXTextField AXRoleDescription='text field'
++++AXButton AXDescription='First image button in a form is a valid default button' AXRoleDescription='button'
++++++AXImage AXRoleDescription='image'
++++++AXStaticText AXRoleDescription='text' AXValue='First image button in a form is a valid default button'
++++AXStaticText AXRoleDescription='text' AXValue=' '
++++AXButton AXDescription='Second image button in a form not a valid default button' AXRoleDescription='button'
++++++AXImage AXRoleDescription='image'
++++++AXStaticText AXRoleDescription='text' AXValue='Second image button in a form not a valid default button'
++AXButton AXRoleDescription='button' AXTitle='Submit outside of form not a valid default button'