From 285da1b6218911cce682bef4ad6c66a2989e005c Mon Sep 17 00:00:00 2001
From: Hiroyuki Ikezoe <hikezoe@mozilla.com>
Date: Fri, 12 May 2017 19:29:24 +0900
Subject: [PATCH] Add clear method for LonghandIdSet.

---
 components/style/properties/properties.mako.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/components/style/properties/properties.mako.rs b/components/style/properties/properties.mako.rs
index 423a79be5dc..6818eb4ec4e 100644
--- a/components/style/properties/properties.mako.rs
+++ b/components/style/properties/properties.mako.rs
@@ -251,6 +251,14 @@ impl LonghandIdSet {
         self.storage[bit / 32] &= !(1 << (bit % 32));
     }
 
+    /// Clear all bits
+    #[inline]
+    pub fn clear(&mut self) {
+        for cell in &mut self.storage {
+            *cell = 0
+        }
+    }
+
     /// Set the corresponding bit of TransitionProperty.
     /// This function will panic if TransitionProperty::All is given.
     pub fn set_transition_property_bit(&mut self, property: &TransitionProperty) {