Various role=scrollbar examples

Span with role=scrollbar - Pass

Span with role=scrollbar and tabindex="-1" - Pass

Span with role=scrollbar and tabindex="0" - Pass

Span with role=scrollbar and tabindex="-456" - Pass

Span with role=scrollbar and tabindex="2" - fail

Span with role=scrollbar and tabindex="2" and disabled attribute - Pass

Span with role=scrollbar and tabindex="2" and aria-disabled="true" - Pass

Span with role=scrollbar and aria-controls pointing to invalid ID - Fail