Add data for toolbar_field_highlight[_text] (#4139)
Add data for toolbar_field_highlight[_text] (#4139)

These are added in Firefox 67 and set the highlight background
and foreground colors for the fields in the URL bar.

Source: https://bugzilla.mozilla.org/show_bug.cgi?id=1450114
mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data