From 544e0f4cd6c45135c55770039b0b92054b92121c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Mon, 29 May 2017 21:38:21 +0200
Subject: [PATCH] style: Allow ApplicableDeclarationBlocks to be compared.

We'll need this to cache pres hints, which generate these.
---
 components/style/stylist.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/style/stylist.rs b/components/style/stylist.rs
index d40a1b8de75..1689db9bd8d 100644
--- a/components/style/stylist.rs
+++ b/components/style/stylist.rs
@@ -1350,7 +1350,7 @@ impl Rule {
 /// This represents the declarations in a given declaration block for a given
 /// importance.
 #[cfg_attr(feature = "servo", derive(HeapSizeOf))]
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub struct ApplicableDeclarationBlock {
     /// The style source, either a style rule, or a property declaration block.
     #[cfg_attr(feature = "servo", ignore_heap_size_of = "Arc")]