From 5b3f27746529c746231d1d1ddef83b5c4e0b2160 Mon Sep 17 00:00:00 2001
From: Patrick Walton <pcwalton@mimiga.net>
Date: Fri, 13 Mar 2020 19:29:32 -0700
Subject: [PATCH] Implement `Default` for `ArcRefCell`

---
 components/layout_2020/cell.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/components/layout_2020/cell.rs b/components/layout_2020/cell.rs
index e12201e4b28..8aae377b24c 100644
--- a/components/layout_2020/cell.rs
+++ b/components/layout_2020/cell.rs
@@ -28,6 +28,17 @@ impl<T> Clone for ArcRefCell<T> {
     }
 }
 
+impl<T> Default for ArcRefCell<T>
+where
+    T: Default,
+{
+    fn default() -> Self {
+        Self {
+            value: Arc::new(AtomicRefCell::new(Default::default())),
+        }
+    }
+}
+
 impl<T> Deref for ArcRefCell<T> {
     type Target = AtomicRefCell<T>;