Try to expose the AccessibilityTree

[rodneyrehm]

Our drivers (most of the "real browser drivers" anyway) are able to start browsers in a way that makes them load certain plugins (extensions, addons, …). We should be able to create a plugin for firefox (perhaps based on a reverse-engineering of DOM Inspector) that exposes the Accessibility Tree and Accessibility Events to window in a way that our WebDriver JS executions can access them. We should investigating the same goal for other (even all) browsers.

This would allow testing the actual AT of documents on a scale that may even be used to verify a browser's support for HTML5/ARIA.

Dom Inspector - Accessibility Tree

Dom Inspector - Accessibility Events