chromium/content/test/data/accessibility/html/popover-expanded-expected-blink.txt

rootWebArea
++genericContainer ignored
++++genericContainer
++++++button expanded name='Will expand'
++++++++staticText name='Will expand'
++++++++++inlineTextBox name='Will expand'
++++++group ispopup=auto
++++++++staticText name='PopoverIsExpanded'
++++++++++inlineTextBox name='PopoverIsExpanded'