Bug 1325734 - Pass the thread-local context into should_traverse_children. r=emilio

components/layout/context.rs

@@ -16,6 +16,7 @@ use net_traits::image_cache_thread::{ImageOrMetadataAvailable, UsePlaceholder};
 use parking_lot::RwLock;
 use servo_config::opts;
 use servo_url::ServoUrl;
+use std::borrow::{Borrow, BorrowMut};
 use std::cell::{RefCell, RefMut};
 use std::collections::HashMap;
 use std::hash::BuildHasherDefault;
@@ -37,6 +38,18 @@ impl<E: TElement> ScopedThreadLocalLayoutContext<E> {
     }
 }
 
+impl<E: TElement> Borrow<ThreadLocalStyleContext<E>> for ScopedThreadLocalLayoutContext<E> {
+    fn borrow(&self) -> &ThreadLocalStyleContext<E> {
+        &self.style_context
+    }
+}
+
+impl<E: TElement> BorrowMut<ThreadLocalStyleContext<E>> for ScopedThreadLocalLayoutContext<E> {
+    fn borrow_mut(&mut self) -> &mut ThreadLocalStyleContext<E> {
+        &mut self.style_context
+    }
+}
+
 /// TLS data that persists across traversals.
 pub struct PersistentThreadLocalLayoutContext {
     // FontContext uses Rc all over the place and so isn't Send, which means we