From 2c9b00ef6b5e0bc12acf100fd653b4612c2e5c56 Mon Sep 17 00:00:00 2001
From: Corey Farwell <coreyf@rwell.org>
Date: Sun, 10 Apr 2016 21:58:19 -0400
Subject: Extract out 'is the html body element' CSSOM concept.

---
 components/script/dom/node.rs | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

(limited to 'components/script/dom/node.rs')

diff --git a/components/script/dom/node.rs b/components/script/dom/node.rs
index 748b7b8249e..1e71966e4e7 100644
--- a/components/script/dom/node.rs
+++ b/components/script/dom/node.rs
@@ -594,12 +594,8 @@ impl Node {
 
         let html_element = document.GetDocumentElement();
 
-        let is_body_element = html_element.r().and_then(|root| {
-            let node = root.upcast::<Node>();
-            node.children().find(|child| { child.is::<HTMLBodyElement>() }).map(|node| {
-                *node.r() == *self
-            })
-        }).unwrap_or(false);
+        let is_body_element = self.downcast::<HTMLBodyElement>()
+                                  .map_or(false, |e| e.is_the_html_body_element());
 
         let scroll_area = window.scroll_area_query(self.to_trusted_node_address());
 
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