Comment 2 for bug 1491253

Mozilla removed this option from Firefox ages ago, as it makes the browser unusable for a large amount of sites.

Oxide doesn't support exceptions for this - it's either enabled or disabled for an entire webview. In the future we'll probably have a way of blacklisting it for certain sites via blink::WebContentSettingsClient::allowScripts, which will be hooked up to site-settings (along with allowImage, allowMedia etc)