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chromium/content/test/data/accessibility/aria/input-text-aria-placeholder-expected-mac-before-11.txt 

AXWebArea AXRoleDescription='HTML content'
++AXTextField AXPlaceholderValue='aria-placeholder1' AXRoleDescription='text field'
++AXTextField AXPlaceholderValue='placeholder2' AXRoleDescription='text field'
++AXTextField AXDescription='aria-label3' AXPlaceholderValue='placeholder3' AXRoleDescription='text field'
++AXTextField AXDescription='aria-label4' AXPlaceholderValue='aria-placeholder4' AXRoleDescription='text field'
++AXTextField AXDescription='aria-label5' AXHelp='aria-description5' AXPlaceholderValue='placeholder5' AXRoleDescription='text field'
++AXGroup AXRoleDescription='group'
++++AXStaticText AXRoleDescription='text' AXValue='aria-description5'
++AXTextField AXDescription='title6' AXPlaceholderValue='aria-placeholder6' AXRoleDescription='text field'