From 3af69cf9bfff4e717fc87298d376a5ece6e2abaa Mon Sep 17 00:00:00 2001
From: Hiroyuki Ikezoe <hikezoe@mozilla.com>
Date: Fri, 21 Apr 2017 18:12:10 +0900
Subject: [PATCH] Servo does not need to support -moz-keyframes

---
 components/style/stylesheets.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/components/style/stylesheets.rs b/components/style/stylesheets.rs
index 3cab9329a7f2..8d2c59744b50 100644
--- a/components/style/stylesheets.rs
+++ b/components/style/stylesheets.rs
@@ -1131,6 +1131,11 @@ impl<'a, 'b> AtRuleParser for NestedRuleParser<'a, 'b> {
                 } else {
                     None
                 };
+                if cfg!(feature = "servo") &&
+                   prefix.as_ref().map_or(false, |p| matches!(*p, VendorPrefix::Moz)) {
+                    // Servo should not support @-moz-keyframes.
+                    return Err(())
+                }
                 let name = match input.next() {
                     Ok(Token::Ident(ref value)) if value != "none" => Atom::from(&**value),
                     Ok(Token::QuotedString(value)) => Atom::from(&*value),