Intent to unship: ::-moz-focus-outer pseudo-element.

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Emilio Cobos Álvarez

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Jul 28, 2020, 6:36:57 PM7/28/20
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Hi,

In bug 1655859, I intend to disable parsing for ::-moz-focus-outer on
all channels.

This pseudo-element used to be an <input type=range> specific
pseudo-element to show some focus outlines, but it does literally
nothing anymore (other than being parsed), after the changes in bug
1636998. As part of making it do nothing, I made it not parse on
Nightly, two releases ago, and we've had no reported regression. All
uses that I've been able to find involve a single selector, so there
should be no behavior change in that regard.

Let me know if there's any concern with doing this. This is behind a
pref (layout.css.moz-focus-outer.enabled), so we could revert if need be.

Cheers,

 -- Emilio

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