Bug 287959 – AX: aria-description does not auto-translate

• Component: Accessibility
• Status: NEW

[Adrian Roselli]

##Steps to reproduce:

1. Use a non-Dutch version of the OS and browser (I use English)
2. Visit: https://adrianroselli.com/demos/aria-description-dutch/
3. Inspect the rendered HTML and accTree to find all cases of `aria-description`
4. Use Safari to auto-translate the page into your language
5. Inspect the rendered HTML for each case of `aria-description`
6. Observe it has not translated.

##Sample code:

On a link:

```
<a href="https://www.w3.org/WAI/WCAG21/Understanding/non-text-content.html" 
  target="_new"
  aria-description="Opent in nieuw venster">
    Niet-tekstuele content begrijpen
</a>
```

On a button:
```
<button
  aria-description="opent ingesloten inhoud">
    Hoe te voldoen aan Niet-tekstuele content
</button>
```

On an iframe:
```
<iframe
  title="Hoe te voldoen aan Niet-tekstuele content"
  aria-description="Engelstalige inhoud">
</iframe>
```

##Additional Info

* I used the W3C Dutch translation to get that text, so it's not generated from auto-translation services.
* The embedded iframe in the dialog probably won't load, which has no bearing on this demo.

[Radar WebKit Bug Importer]

<rdar://problem/145139932>