From 53c88f0413a00abd7f35e8fe823e359013db91f2 Mon Sep 17 00:00:00 2001
From: Simon Sapin <simon.sapin@exyr.org>
Date: Wed, 22 Apr 2015 17:19:00 +0200
Subject: [PATCH] `vertical-align` can take negative lengths and percentages.

http://dev.w3.org/csswg/css2/visudet.html#propdef-vertical-align
---
 components/style/properties.mako.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/style/properties.mako.rs b/components/style/properties.mako.rs
index a1acc73ae29..f41f2feaad2 100644
--- a/components/style/properties.mako.rs
+++ b/components/style/properties.mako.rs
@@ -608,7 +608,7 @@ pub mod longhands {
         /// baseline | sub | super | top | text-top | middle | bottom | text-bottom
         /// | <percentage> | <length>
         pub fn parse(_context: &ParserContext, input: &mut Parser) -> Result<SpecifiedValue, ()> {
-            input.try(specified::LengthOrPercentage::parse_non_negative)
+            input.try(specified::LengthOrPercentage::parse)
             .map(SpecifiedValue::LengthOrPercentage)
             .or_else(|()| {
                 match_ignore_ascii_case! { try!(input.expect_ident()),