chromium/content/test/data/accessibility/html/selectlist-open-expected-blink.txt

rootWebArea focusable
++genericContainer ignored
++++genericContainer
++++++genericContainer
++++++++genericContainer ignored
++++++++++comboBoxMenuButton focusable value='Option 1' haspopup=listbox
++++++++++++staticText name='Custom selectlist button'
++++++++++++++inlineTextBox name='Custom selectlist button'
++++++++genericContainer ignored
++++++++++listBox setSize=3 ispopup=auto
++++++++++++listBoxOption focusable name='Option 1' setSize=3 posInSet=1 selected=true
++++++++++++listBoxOption focusable name='Option 2' setSize=3 posInSet=2 selected=false
++++++++++++listBoxOption focusable name='Option 3' setSize=3 posInSet=3 selected=false
++++++++genericContainer ignored invisible