`abbr` element

Pass Criteria

#1: Element is supported
#2: Correct HTML and Core Accessibility API mappings
#3: Correct Accessible Name & Description Calculation

Reference

Test abb-001: `abbr` element with `title` attribute

BBC

Test abb-002: `abbr` element without `title` attribute

CBS

Test abb-003: `abbr` element with `aria-label` attribute

WWW

Test abb-004: `abbr` element with `aria-label` attribute and `aria-describedby` attribute

WWW

AKA the Internet

Test abb-005: `abbr` element with `aria-label` and `title` attributes

WWW

Test abb-006: `abbr` element with `aria-label` and `title` attributes with differing values

WWW