From 864fc133a33dcdc0a12a5531d340d3ee6e9f3778 Mon Sep 17 00:00:00 2001
From: roytam1 <roytam@gmail.com>
Date: Fri, 18 Aug 2023 09:57:41 +0800
Subject: [PATCH] add pref for en/disabling CSS Animations and Transitions.

---
 layout/style/nsCSSPropList.h | 4 ++--
 modules/libpref/init/all.js  | 6 ++++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/layout/style/nsCSSPropList.h b/layout/style/nsCSSPropList.h
index f2903273e5..fa4cd1beb9 100644
--- a/layout/style/nsCSSPropList.h
+++ b/layout/style/nsCSSPropList.h
@@ -366,7 +366,7 @@ CSS_PROP_SHORTHAND(
     animation,
     Animation,
     CSS_PROPERTY_PARSE_FUNCTION,
-    "")
+    "layout.css.animation.enabled")
 CSS_PROP_DISPLAY(
     animation-delay,
     animation_delay,
@@ -4277,7 +4277,7 @@ CSS_PROP_SHORTHAND(
     transition,
     Transition,
     CSS_PROPERTY_PARSE_FUNCTION,
-    "")
+    "layout.css.transition.enabled")
 CSS_PROP_DISPLAY(
     transition-delay,
     transition_delay,
diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index bb0f5737c2..742fde5568 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -2489,6 +2489,12 @@ pref("layout.css.isolation.enabled", true);
 // Is support for CSS Filters enabled?
 pref("layout.css.filters.enabled", true);
 
+// Is support for CSS Animation enabled?
+pref("layout.css.animation.enabled", true);
+
+// Is support for CSS Transition enabled?
+pref("layout.css.transition.enabled", true);
+
 // Is support for scrollbar-width property enabled?
 pref("layout.css.scrollbar-width.enabled", true);