From bbcd7e414a1130102285bb75381d714a4886e16f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Mon, 6 Aug 2018 23:52:52 +0000
Subject: [PATCH] style: Remove unused selectors methods.

Differential Revision: https://phabricator.services.mozilla.com/D2767
---
 components/selectors/tree.rs                  |  6 -----
 components/style/gecko/wrapper.rs             | 24 -------------------
 .../invalidation/element/element_wrapper.rs   | 10 --------
 3 files changed, 40 deletions(-)

diff --git a/components/selectors/tree.rs b/components/selectors/tree.rs
index ef544cc7e4c..112b02dbbd9 100644
--- a/components/selectors/tree.rs
+++ b/components/selectors/tree.rs
@@ -45,12 +45,6 @@ pub trait Element: Sized + Clone + Debug {
         self.parent_element()
     }
 
-    /// Skips non-element nodes
-    fn first_child_element(&self) -> Option<Self>;
-
-    /// Skips non-element nodes
-    fn last_child_element(&self) -> Option<Self>;
-
     /// Skips non-element nodes
     fn prev_sibling_element(&self) -> Option<Self>;
 
diff --git a/components/style/gecko/wrapper.rs b/components/style/gecko/wrapper.rs
index 5eecc6911ad..543729602a7 100644
--- a/components/style/gecko/wrapper.rs
+++ b/components/style/gecko/wrapper.rs
@@ -1957,30 +1957,6 @@ impl<'le> ::selectors::Element for GeckoElement<'le> {
         unsafe { Some(GeckoElement(&slot.as_ref()?._base._base._base._base)) }
     }
 
-    #[inline]
-    fn first_child_element(&self) -> Option<Self> {
-        let mut child = self.as_node().first_child();
-        while let Some(child_node) = child {
-            if let Some(el) = child_node.as_element() {
-                return Some(el);
-            }
-            child = child_node.next_sibling();
-        }
-        None
-    }
-
-    #[inline]
-    fn last_child_element(&self) -> Option<Self> {
-        let mut child = self.as_node().last_child();
-        while let Some(child_node) = child {
-            if let Some(el) = child_node.as_element() {
-                return Some(el);
-            }
-            child = child_node.prev_sibling();
-        }
-        None
-    }
-
     #[inline]
     fn prev_sibling_element(&self) -> Option<Self> {
         let mut sibling = self.as_node().prev_sibling();
diff --git a/components/style/invalidation/element/element_wrapper.rs b/components/style/invalidation/element/element_wrapper.rs
index b1e799d9efd..cb4f79e92e1 100644
--- a/components/style/invalidation/element/element_wrapper.rs
+++ b/components/style/invalidation/element/element_wrapper.rs
@@ -283,16 +283,6 @@ where
         Some(Self::new(host, self.snapshot_map))
     }
 
-    fn first_child_element(&self) -> Option<Self> {
-        let child = self.element.first_child_element()?;
-        Some(Self::new(child, self.snapshot_map))
-    }
-
-    fn last_child_element(&self) -> Option<Self> {
-        let child = self.element.last_child_element()?;
-        Some(Self::new(child, self.snapshot_map))
-    }
-
     fn prev_sibling_element(&self) -> Option<Self> {
         let sibling = self.element.prev_sibling_element()?;
         Some(Self::new(sibling, self.snapshot_map))