From c7172052f908f38014b2a93f3a162b4391cc5cf5 Mon Sep 17 00:00:00 2001
From: Xidorn Quan <me@upsuper.org>
Date: Mon, 30 Oct 2017 16:33:51 +1100
Subject: [PATCH] Add support for -moz-window-opacity to stylo

---
 components/style/properties/longhand/ui.mako.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/components/style/properties/longhand/ui.mako.rs b/components/style/properties/longhand/ui.mako.rs
index 5115e31d6f5..6152411155a 100644
--- a/components/style/properties/longhand/ui.mako.rs
+++ b/components/style/properties/longhand/ui.mako.rs
@@ -40,6 +40,12 @@ ${helpers.single_keyword("-moz-window-shadow", "none default menu tooltip sheet"
                          internal=True,
                          spec="None (Nonstandard internal property)")}
 
+${helpers.predefined_type("-moz-window-opacity", "Opacity", "1.0", products="gecko",
+                          gecko_ffi_name="mWindowOpacity",
+                          animation_value_type="ComputedValue",
+                          internal=True,
+                          spec="None (Nonstandard internal property)")}
+
 <%helpers:longhand name="-moz-force-broken-image-icon"
                    products="gecko"
                    animation_value_type="discrete"