From 5bdec7a0f4825610f392e87af41942fdd192d00b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Thu, 10 Aug 2023 23:55:01 +0200
Subject: [PATCH] style: Implement prefers-contrast: custom and let
 prefers-contrast ride the trains

Differential Revision: https://phabricator.services.mozilla.com/D143198
---
 components/style/gecko/media_features.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/components/style/gecko/media_features.rs b/components/style/gecko/media_features.rs
index c873ac92b87..c284fbd86a3 100644
--- a/components/style/gecko/media_features.rs
+++ b/components/style/gecko/media_features.rs
@@ -315,11 +315,12 @@ fn eval_prefers_reduced_motion(device: &Device, query_value: Option<PrefersReduc
 #[derive(Clone, Copy, Debug, FromPrimitive, Parse, PartialEq, ToCss)]
 #[repr(u8)]
 pub enum PrefersContrast {
-    /// More contrast is preferred. Corresponds to an accessibility theme
-    /// being enabled or Firefox forcing high contrast colors.
+    /// More contrast is preferred.
     More,
     /// Low contrast is preferred.
     Less,
+    /// Custom (not more, not less).
+    Custom,
     /// The default value if neither high or low contrast is enabled.
     NoPreference,
 }