From 322113a393f3a443663c6f208f5ab7cce08b47d7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Sat, 17 Mar 2018 00:00:36 +0100
Subject: [PATCH] style: Add another pref to control the url-prefix hack.

MozReview-Commit-ID: D4qL0oO69Uh
Bug: 1446470
Reviewed-by: xidorn
---
 components/style/stylesheets/document_rule.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/components/style/stylesheets/document_rule.rs b/components/style/stylesheets/document_rule.rs
index 596ea487510..ad2c9d86219 100644
--- a/components/style/stylesheets/document_rule.rs
+++ b/components/style/stylesheets/document_rule.rs
@@ -224,6 +224,10 @@ impl DocumentCondition {
             return true;
         }
 
+        if !unsafe { structs::StylePrefs_sMozDocumentURLPrefixHackEnabled } {
+            return false;
+        }
+
         // Allow a single url-prefix() for compatibility.
         //
         // See bug 1446470 and dependencies.