Move DOMRefCell back into script.

We’re not using it in style after all.

components/script/dom/bindings/cell.rs

@@ -4,15 +4,14 @@
 
 //! A shareable mutable container for the DOM.
 
-use refcell::{BorrowError, BorrowMutError, Ref, RefCell, RefMut};
-use thread_state;
+use style::refcell::{BorrowError, BorrowMutError, Ref, RefCell, RefMut};
+use style::thread_state;
 
 /// A mutable field in the DOM.
 ///
 /// This extends the API of `core::cell::RefCell` to allow unsafe access in
 /// certain situations, with dynamic checking in debug builds.
-#[derive(Clone, PartialEq, Debug)]
-#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
+#[derive(Clone, PartialEq, Debug, HeapSizeOf)]
 pub struct DOMRefCell<T> {
     value: RefCell<T>,
 }

components/script/dom/bindings/mod.rs

@@ -128,9 +128,8 @@
 //! return `Err()` from the method with the appropriate [error value]
 //! (error/enum.Error.html).
 
-pub use style::domrefcell as cell;
-
 pub mod callback;
+pub mod cell;
 pub mod constant;
 pub mod conversions;
 pub mod error;

components/script/dom/bindings/trace.rs

@@ -35,6 +35,7 @@ use cssparser::RGBA;
 use devtools_traits::CSSError;
 use devtools_traits::WorkerId;
 use dom::abstractworker::SharedRt;
+use dom::bindings::cell::DOMRefCell;
 use dom::bindings::js::{JS, Root};
 use dom::bindings::refcounted::{Trusted, TrustedPromise};
 use dom::bindings::reflector::{Reflectable, Reflector};
@@ -89,7 +90,6 @@ use std::sync::mpsc::{Receiver, Sender};
 use std::time::{SystemTime, Instant};
 use string_cache::{Atom, Namespace, QualName};
 use style::attr::{AttrIdentifier, AttrValue, LengthOrPercentageOrAuto};
-use style::domrefcell::DOMRefCell;
 use style::element_state::*;
 use style::properties::PropertyDeclarationBlock;
 use style::selector_impl::{ElementSnapshot, PseudoElement};

components/style/lib.rs

@@ -90,7 +90,6 @@ pub mod context;
 pub mod custom_properties;
 pub mod data;
 pub mod dom;
-pub mod domrefcell;
 pub mod element_state;
 pub mod error_reporting;
 pub mod font_face;