From 7eba459fca354dd5829ca4f9cafa7f17673bc88d Mon Sep 17 00:00:00 2001
From: Mathew Hodson <mathew.hodson@gmail.com>
Date: Sat, 18 Mar 2023 11:45:36 +0000
Subject: [PATCH] Bug 1822955 - Disable mozImageSmoothingEnabled by default.
 r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D172860
---
 dom/webidl/CanvasRenderingContext2D.webidl | 1 +
 modules/libpref/init/StaticPrefList.yaml   | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/dom/webidl/CanvasRenderingContext2D.webidl b/dom/webidl/CanvasRenderingContext2D.webidl
index 102c34efa5a7..ed5e6c0ed8fa 100644
--- a/dom/webidl/CanvasRenderingContext2D.webidl
+++ b/dom/webidl/CanvasRenderingContext2D.webidl
@@ -46,6 +46,7 @@ interface CanvasRenderingContext2D {
   // image smoothing mode -- if disabled, images won't be smoothed
   // if scaled.
   [Deprecated="PrefixedImageSmoothingEnabled",
+   Pref="dom.mozImageSmoothingEnabled.enabled",
    BinaryName="imageSmoothingEnabled"]
   attribute boolean mozImageSmoothingEnabled;
 
diff --git a/modules/libpref/init/StaticPrefList.yaml b/modules/libpref/init/StaticPrefList.yaml
index b655bef82d77..53abaad3e900 100644
--- a/modules/libpref/init/StaticPrefList.yaml
+++ b/modules/libpref/init/StaticPrefList.yaml
@@ -2158,6 +2158,12 @@
 # Prefs starting with "dom."
 #---------------------------------------------------------------------------
 
+# Whether CanvasRenderingContext2D.mozImageSmoothingEnabled is enabled.
+- name: dom.mozImageSmoothingEnabled.enabled
+  type: bool
+  value: false
+  mirror: always
+
 # Allow cut/copy
 - name: dom.allow_cut_copy
   type: bool