From 4c4b01954c471c87e65ef1adb0f0754ddf5fef01 Mon Sep 17 00:00:00 2001
From: Hiroyuki Ikezoe <hikezoe@mozilla.com>
Date: Fri, 24 Mar 2017 09:54:12 +0900
Subject: [PATCH] Drop mut from pseudo_style for the argument of
 cascade_internal.

---
 components/style/matching.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/components/style/matching.rs b/components/style/matching.rs
index 8820108766a9..2cd06236473d 100644
--- a/components/style/matching.rs
+++ b/components/style/matching.rs
@@ -472,7 +472,7 @@ trait PrivateMatchMethods: TElement {
     fn cascade_internal(&self,
                         context: &StyleContext<Self>,
                         primary_style: &ComputedStyle,
-                        pseudo_style: &mut Option<(&PseudoElement, &mut ComputedStyle)>,
+                        pseudo_style: &Option<(&PseudoElement, &mut ComputedStyle)>,
                         booleans: &CascadeBooleans)
                         -> Arc<ComputedValues> {
         let shared_context = context.shared;
@@ -570,7 +570,7 @@ trait PrivateMatchMethods: TElement {
 
         // Compute the new values.
         let mut new_values = self.cascade_internal(context, primary_style,
-                                                   &mut pseudo_style, &booleans);
+                                                   &pseudo_style, &booleans);
 
         // Handle animations.
         if booleans.animate {