From 4e356b4bb9b66c8a91153e66c683ac9331664fc5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Wed, 17 Oct 2018 13:37:47 +0000
Subject: [PATCH] style: Clear host rules from clear_cascade_data.

While at it, also measure them for about:memory.

Differential Revision: https://phabricator.services.mozilla.com/D8972
---
 components/style/stylist.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/components/style/stylist.rs b/components/style/stylist.rs
index e5249a52b8f..fe96fd78ad8 100644
--- a/components/style/stylist.rs
+++ b/components/style/stylist.rs
@@ -2415,6 +2415,9 @@ impl CascadeData {
         if let Some(ref mut slotted_rules) = self.slotted_rules {
             slotted_rules.clear();
         }
+        if let Some(ref mut host_rules) = self.host_rules {
+            host_rules.clear();
+        }
         self.animations.clear();
         self.extra_data.clear();
         self.rules_source_order = 0;
@@ -2440,6 +2443,9 @@ impl CascadeData {
         if let Some(ref slotted_rules) = self.slotted_rules {
             slotted_rules.add_size_of(ops, sizes);
         }
+        if let Some(ref host_rules) = self.host_rules {
+            host_rules.add_size_of(ops, sizes);
+        }
         sizes.mInvalidationMap += self.invalidation_map.size_of(ops);
         sizes.mRevalidationSelectors += self.selectors_for_cache_revalidation.size_of(ops);
         sizes.mOther += self.animations.size_of(ops);