Bug 266884 – Web Inspector: Add the ability to disable/enable individual entries from font-family in the Styles panel

• Status: NEW
• Component: Web Inspector

[Karl Dubost]

1. Go to https://webkit.org/
2. Open the Web Inspector on the Elements tab
3. Click on the html element
4. The style panel shows font-family

```
html {
    font-family: -apple-system, "SF Pro Text", Helvetica, sans-serif;
    font-size: 62.5%;
    font-synthesis: none;
}
```

There is a list of fonts.
We can edit the value and erase some of the fonts, or add some.

Proposal:
Have a checkbox in front of each font names to disable it or enable it.

* That will be friendlier for user in testing the combination of fonts which are working.
* And it will be less prone to delete typos
* It will make it easier to identify in a test scenario, the fonts which have bugs

[Radar WebKit Bug Importer]

<rdar://problem/120136198>