Codebase Browser
chromium
Go to App

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

AXWebArea
++AXComboBox AXHasPopup=1 AXPopupValue='menu'
++AXComboBox AXHasPopup=1 AXPopupValue='listbox'
++AXComboBox AXHasPopup=1 AXPopupValue='menu'
++AXComboBox AXHasPopup=1 AXPopupValue='listbox'
++AXComboBox AXHasPopup=1 AXPopupValue='grid'
++AXComboBox AXHasPopup=1 AXPopupValue='dialog'
++AXComboBox AXHasPopup=1 AXPopupValue='listbox'
++AXComboBox AXHasPopup=1 AXPopupValue='listbox'
++AXComboBox AXHasPopup=1 AXPopupValue='listbox'